./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4318218de1a670b98e217596890d501e5109c78977de7e98dfa51804dcb18c15 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:37:29,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:37:29,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:37:30,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:37:30,006 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:37:30,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:37:30,008 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:37:30,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:37:30,012 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:37:30,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:37:30,013 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:37:30,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:37:30,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:37:30,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:37:30,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:37:30,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:37:30,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:37:30,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:37:30,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:37:30,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:37:30,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:37:30,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:37:30,027 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:37:30,028 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:37:30,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:37:30,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:37:30,032 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:37:30,033 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:37:30,033 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:37:30,034 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:37:30,034 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:37:30,035 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:37:30,035 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:37:30,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:37:30,037 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:37:30,037 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:37:30,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:37:30,038 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:37:30,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:37:30,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:37:30,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:37:30,040 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-06 18:37:30,062 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:37:30,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:37:30,062 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:37:30,062 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:37:30,063 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:37:30,063 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:37:30,063 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:37:30,064 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:37:30,064 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:37:30,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:37:30,064 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:37:30,064 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 18:37:30,064 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:37:30,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:37:30,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:37:30,065 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 18:37:30,065 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 18:37:30,065 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 18:37:30,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:37:30,065 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 18:37:30,066 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:37:30,066 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:37:30,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:37:30,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:37:30,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:37:30,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:37:30,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:37:30,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:37:30,067 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:37:30,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:37:30,067 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:37:30,067 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4318218de1a670b98e217596890d501e5109c78977de7e98dfa51804dcb18c15 [2021-12-06 18:37:30,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:37:30,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:37:30,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:37:30,268 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:37:30,269 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:37:30,270 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i [2021-12-06 18:37:30,313 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/data/6eea3b51b/d5b34e4326ad4c9988475cff4207a0d2/FLAG9929d34dc [2021-12-06 18:37:30,755 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:37:30,756 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i [2021-12-06 18:37:30,768 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/data/6eea3b51b/d5b34e4326ad4c9988475cff4207a0d2/FLAG9929d34dc [2021-12-06 18:37:31,088 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/data/6eea3b51b/d5b34e4326ad4c9988475cff4207a0d2 [2021-12-06 18:37:31,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:37:31,091 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:37:31,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:37:31,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:37:31,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:37:31,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:37:31" (1/1) ... [2021-12-06 18:37:31,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e1eb8fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:37:31, skipping insertion in model container [2021-12-06 18:37:31,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:37:31" (1/1) ... [2021-12-06 18:37:31,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:37:31,133 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:37:31,396 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:37:31,412 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-12-06 18:37:31,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7aa518f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:37:31, skipping insertion in model container [2021-12-06 18:37:31,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:37:31,414 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-06 18:37:31,415 INFO L158 Benchmark]: Toolchain (without parser) took 323.06ms. Allocated memory is still 107.0MB. Free memory was 64.0MB in the beginning and 49.6MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-06 18:37:31,416 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 107.0MB. Free memory is still 82.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:37:31,417 INFO L158 Benchmark]: CACSL2BoogieTranslator took 320.46ms. Allocated memory is still 107.0MB. Free memory was 63.8MB in the beginning and 49.6MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-06 18:37:31,419 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 107.0MB. Free memory is still 82.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 320.46ms. Allocated memory is still 107.0MB. Free memory was 63.8MB in the beginning and 49.6MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4318218de1a670b98e217596890d501e5109c78977de7e98dfa51804dcb18c15 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:37:32,791 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:37:32,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:37:32,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:37:32,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:37:32,816 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:37:32,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:37:32,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:37:32,821 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:37:32,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:37:32,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:37:32,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:37:32,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:37:32,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:37:32,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:37:32,827 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:37:32,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:37:32,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:37:32,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:37:32,838 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:37:32,840 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:37:32,842 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:37:32,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:37:32,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:37:32,849 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:37:32,849 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:37:32,849 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:37:32,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:37:32,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:37:32,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:37:32,853 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:37:32,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:37:32,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:37:32,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:37:32,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:37:32,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:37:32,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:37:32,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:37:32,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:37:32,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:37:32,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:37:32,861 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-06 18:37:32,887 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:37:32,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:37:32,887 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:37:32,887 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:37:32,888 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:37:32,888 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:37:32,889 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:37:32,889 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:37:32,889 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:37:32,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:37:32,890 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:37:32,890 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 18:37:32,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:37:32,890 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:37:32,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:37:32,891 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 18:37:32,891 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 18:37:32,891 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 18:37:32,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:37:32,892 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 18:37:32,892 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 18:37:32,892 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 18:37:32,892 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:37:32,892 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:37:32,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:37:32,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:37:32,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:37:32,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:37:32,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:37:32,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:37:32,894 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 18:37:32,894 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 18:37:32,894 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:37:32,895 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 18:37:32,895 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4318218de1a670b98e217596890d501e5109c78977de7e98dfa51804dcb18c15 [2021-12-06 18:37:33,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:37:33,139 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:37:33,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:37:33,141 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:37:33,142 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:37:33,143 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i [2021-12-06 18:37:33,186 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/data/4510deaaa/1bb945673e834911a026e818cd284bec/FLAGb4d8dbd1c [2021-12-06 18:37:33,638 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:37:33,639 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i [2021-12-06 18:37:33,651 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/data/4510deaaa/1bb945673e834911a026e818cd284bec/FLAGb4d8dbd1c [2021-12-06 18:37:33,661 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/data/4510deaaa/1bb945673e834911a026e818cd284bec [2021-12-06 18:37:33,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:37:33,664 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:37:33,665 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:37:33,665 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:37:33,667 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:37:33,668 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:37:33" (1/1) ... [2021-12-06 18:37:33,669 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bf83682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:37:33, skipping insertion in model container [2021-12-06 18:37:33,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:37:33" (1/1) ... [2021-12-06 18:37:33,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:37:33,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:37:33,978 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:37:33,992 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-06 18:37:34,001 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:37:34,041 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:37:34,047 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:37:34,092 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:37:34,124 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:37:34,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:37:34 WrapperNode [2021-12-06 18:37:34,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:37:34,126 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:37:34,126 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:37:34,126 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:37:34,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:37:34" (1/1) ... [2021-12-06 18:37:34,153 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:37:34" (1/1) ... [2021-12-06 18:37:34,181 INFO L137 Inliner]: procedures = 174, calls = 117, calls flagged for inlining = 29, calls inlined = 14, statements flattened = 184 [2021-12-06 18:37:34,181 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:37:34,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:37:34,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:37:34,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:37:34,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:37:34" (1/1) ... [2021-12-06 18:37:34,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:37:34" (1/1) ... [2021-12-06 18:37:34,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:37:34" (1/1) ... [2021-12-06 18:37:34,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:37:34" (1/1) ... [2021-12-06 18:37:34,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:37:34" (1/1) ... [2021-12-06 18:37:34,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:37:34" (1/1) ... [2021-12-06 18:37:34,210 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:37:34" (1/1) ... [2021-12-06 18:37:34,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:37:34,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:37:34,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:37:34,214 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:37:34,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:37:34" (1/1) ... [2021-12-06 18:37:34,219 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:37:34,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:37:34,238 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:37:34,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:37:34,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-06 18:37:34,268 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-12-06 18:37:34,268 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-12-06 18:37:34,268 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-12-06 18:37:34,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-12-06 18:37:34,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 18:37:34,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 18:37:34,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 18:37:34,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:37:34,269 INFO L130 BoogieDeclarations]: Found specification of procedure free_reports [2021-12-06 18:37:34,269 INFO L138 BoogieDeclarations]: Found implementation of procedure free_reports [2021-12-06 18:37:34,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 18:37:34,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 18:37:34,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 18:37:34,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-06 18:37:34,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 18:37:34,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 18:37:34,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-12-06 18:37:34,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-12-06 18:37:34,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-06 18:37:34,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-06 18:37:34,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:37:34,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:37:34,369 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:37:34,371 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:37:34,922 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:37:34,930 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:37:34,930 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 18:37:34,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:37:34 BoogieIcfgContainer [2021-12-06 18:37:34,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:37:34,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:37:34,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:37:34,937 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:37:34,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:37:33" (1/3) ... [2021-12-06 18:37:34,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6de0a0e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:37:34, skipping insertion in model container [2021-12-06 18:37:34,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:37:34" (2/3) ... [2021-12-06 18:37:34,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6de0a0e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:37:34, skipping insertion in model container [2021-12-06 18:37:34,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:37:34" (3/3) ... [2021-12-06 18:37:34,940 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test23_4.i [2021-12-06 18:37:34,946 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:37:34,946 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 76 error locations. [2021-12-06 18:37:34,988 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:37:34,995 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 18:37:34,995 INFO L340 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2021-12-06 18:37:35,010 INFO L276 IsEmpty]: Start isEmpty. Operand has 198 states, 107 states have (on average 1.841121495327103) internal successors, (197), 183 states have internal predecessors, (197), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-06 18:37:35,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 18:37:35,016 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:37:35,016 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:37:35,016 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-12-06 18:37:35,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:37:35,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1838385922, now seen corresponding path program 1 times [2021-12-06 18:37:35,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:37:35,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [759143102] [2021-12-06 18:37:35,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:37:35,034 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:37:35,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:37:35,036 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:37:35,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 18:37:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:35,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 18:37:35,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:37:35,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:37:35,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:37:35,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:37:35,227 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:37:35,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [759143102] [2021-12-06 18:37:35,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [759143102] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:37:35,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:37:35,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:37:35,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88433620] [2021-12-06 18:37:35,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:37:35,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:37:35,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:37:35,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:37:35,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:37:35,267 INFO L87 Difference]: Start difference. First operand has 198 states, 107 states have (on average 1.841121495327103) internal successors, (197), 183 states have internal predecessors, (197), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:37:35,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:37:35,972 INFO L93 Difference]: Finished difference Result 225 states and 241 transitions. [2021-12-06 18:37:35,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:37:35,975 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-12-06 18:37:35,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:37:35,982 INFO L225 Difference]: With dead ends: 225 [2021-12-06 18:37:35,982 INFO L226 Difference]: Without dead ends: 221 [2021-12-06 18:37:35,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:37:35,986 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 28 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 18:37:35,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 813 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 18:37:35,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-12-06 18:37:36,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 205. [2021-12-06 18:37:36,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 113 states have (on average 1.7876106194690264) internal successors, (202), 188 states have internal predecessors, (202), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2021-12-06 18:37:36,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 221 transitions. [2021-12-06 18:37:36,029 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 221 transitions. Word has length 12 [2021-12-06 18:37:36,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:37:36,030 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 221 transitions. [2021-12-06 18:37:36,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:37:36,030 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 221 transitions. [2021-12-06 18:37:36,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 18:37:36,031 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:37:36,031 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:37:36,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 18:37:36,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:37:36,232 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-12-06 18:37:36,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:37:36,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1838385921, now seen corresponding path program 1 times [2021-12-06 18:37:36,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:37:36,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [115570010] [2021-12-06 18:37:36,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:37:36,233 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:37:36,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:37:36,234 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:37:36,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 18:37:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:36,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 18:37:36,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:37:36,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:37:36,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:37:36,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:37:36,378 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:37:36,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [115570010] [2021-12-06 18:37:36,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [115570010] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:37:36,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:37:36,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:37:36,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255843212] [2021-12-06 18:37:36,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:37:36,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:37:36,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:37:36,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:37:36,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:37:36,380 INFO L87 Difference]: Start difference. First operand 205 states and 221 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:37:37,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:37:37,042 INFO L93 Difference]: Finished difference Result 230 states and 245 transitions. [2021-12-06 18:37:37,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:37:37,042 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-12-06 18:37:37,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:37:37,044 INFO L225 Difference]: With dead ends: 230 [2021-12-06 18:37:37,044 INFO L226 Difference]: Without dead ends: 230 [2021-12-06 18:37:37,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:37:37,045 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 35 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 18:37:37,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 1057 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 18:37:37,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-12-06 18:37:37,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 205. [2021-12-06 18:37:37,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 113 states have (on average 1.7699115044247788) internal successors, (200), 188 states have internal predecessors, (200), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2021-12-06 18:37:37,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 219 transitions. [2021-12-06 18:37:37,057 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 219 transitions. Word has length 12 [2021-12-06 18:37:37,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:37:37,057 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 219 transitions. [2021-12-06 18:37:37,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:37:37,057 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 219 transitions. [2021-12-06 18:37:37,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 18:37:37,058 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:37:37,058 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:37:37,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 18:37:37,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:37:37,260 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-12-06 18:37:37,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:37:37,262 INFO L85 PathProgramCache]: Analyzing trace with hash -95575587, now seen corresponding path program 1 times [2021-12-06 18:37:37,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:37:37,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [567438643] [2021-12-06 18:37:37,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:37:37,265 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:37:37,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:37:37,267 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:37:37,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-06 18:37:37,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:37,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 18:37:37,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:37:37,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:37:37,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:37:37,398 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:37:37,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [567438643] [2021-12-06 18:37:37,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [567438643] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:37:37,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:37:37,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:37:37,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046120110] [2021-12-06 18:37:37,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:37:37,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:37:37,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:37:37,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:37:37,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:37:37,400 INFO L87 Difference]: Start difference. First operand 205 states and 219 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:37:37,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:37:37,424 INFO L93 Difference]: Finished difference Result 217 states and 231 transitions. [2021-12-06 18:37:37,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:37:37,424 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-12-06 18:37:37,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:37:37,425 INFO L225 Difference]: With dead ends: 217 [2021-12-06 18:37:37,425 INFO L226 Difference]: Without dead ends: 217 [2021-12-06 18:37:37,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:37:37,427 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 20 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:37:37,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 814 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:37:37,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-12-06 18:37:37,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 196. [2021-12-06 18:37:37,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 109 states have (on average 1.761467889908257) internal successors, (192), 180 states have internal predecessors, (192), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-12-06 18:37:37,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 209 transitions. [2021-12-06 18:37:37,437 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 209 transitions. Word has length 12 [2021-12-06 18:37:37,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:37:37,437 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 209 transitions. [2021-12-06 18:37:37,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:37:37,438 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 209 transitions. [2021-12-06 18:37:37,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 18:37:37,438 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:37:37,438 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:37:37,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-06 18:37:37,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:37:37,640 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-12-06 18:37:37,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:37:37,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1838471554, now seen corresponding path program 1 times [2021-12-06 18:37:37,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:37:37,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [750050360] [2021-12-06 18:37:37,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:37:37,645 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:37:37,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:37:37,646 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:37:37,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-06 18:37:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:37,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:37:37,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:37:37,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:37:37,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:37:37,734 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:37:37,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [750050360] [2021-12-06 18:37:37,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [750050360] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:37:37,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:37:37,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:37:37,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640561425] [2021-12-06 18:37:37,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:37:37,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:37:37,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:37:37,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:37:37,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:37:37,737 INFO L87 Difference]: Start difference. First operand 196 states and 209 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:37:37,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:37:37,766 INFO L93 Difference]: Finished difference Result 217 states and 230 transitions. [2021-12-06 18:37:37,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:37:37,767 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-12-06 18:37:37,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:37:37,768 INFO L225 Difference]: With dead ends: 217 [2021-12-06 18:37:37,768 INFO L226 Difference]: Without dead ends: 217 [2021-12-06 18:37:37,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:37:37,769 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 121 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:37:37,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 754 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:37:37,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-12-06 18:37:37,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 196. [2021-12-06 18:37:37,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 109 states have (on average 1.7522935779816513) internal successors, (191), 180 states have internal predecessors, (191), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-12-06 18:37:37,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 208 transitions. [2021-12-06 18:37:37,777 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 208 transitions. Word has length 12 [2021-12-06 18:37:37,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:37:37,778 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 208 transitions. [2021-12-06 18:37:37,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:37:37,778 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 208 transitions. [2021-12-06 18:37:37,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 18:37:37,778 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:37:37,778 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:37:37,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-06 18:37:37,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:37:37,980 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-12-06 18:37:37,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:37:37,982 INFO L85 PathProgramCache]: Analyzing trace with hash -95661219, now seen corresponding path program 1 times [2021-12-06 18:37:37,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:37:37,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183916284] [2021-12-06 18:37:37,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:37:37,984 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:37:37,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:37:37,987 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:37:37,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-06 18:37:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:38,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:37:38,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:37:38,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:37:38,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:37:38,087 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:37:38,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1183916284] [2021-12-06 18:37:38,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1183916284] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:37:38,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:37:38,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:37:38,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852521802] [2021-12-06 18:37:38,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:37:38,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:37:38,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:37:38,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:37:38,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:37:38,089 INFO L87 Difference]: Start difference. First operand 196 states and 208 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:37:38,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:37:38,117 INFO L93 Difference]: Finished difference Result 201 states and 212 transitions. [2021-12-06 18:37:38,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:37:38,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-12-06 18:37:38,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:37:38,120 INFO L225 Difference]: With dead ends: 201 [2021-12-06 18:37:38,120 INFO L226 Difference]: Without dead ends: 201 [2021-12-06 18:37:38,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:37:38,121 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 104 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:37:38,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 702 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:37:38,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-12-06 18:37:38,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 198. [2021-12-06 18:37:38,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 111 states have (on average 1.7387387387387387) internal successors, (193), 182 states have internal predecessors, (193), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-12-06 18:37:38,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 210 transitions. [2021-12-06 18:37:38,131 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 210 transitions. Word has length 12 [2021-12-06 18:37:38,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:37:38,131 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 210 transitions. [2021-12-06 18:37:38,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:37:38,132 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 210 transitions. [2021-12-06 18:37:38,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 18:37:38,132 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:37:38,132 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:37:38,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-06 18:37:38,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:37:38,334 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-12-06 18:37:38,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:37:38,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1329489612, now seen corresponding path program 1 times [2021-12-06 18:37:38,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:37:38,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [746347945] [2021-12-06 18:37:38,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:37:38,336 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:37:38,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:37:38,338 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:37:38,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-06 18:37:38,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:38,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:37:38,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:37:38,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:37:38,452 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:37:38,452 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:37:38,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [746347945] [2021-12-06 18:37:38,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [746347945] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:37:38,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:37:38,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:37:38,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662656071] [2021-12-06 18:37:38,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:37:38,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:37:38,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:37:38,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:37:38,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:37:38,454 INFO L87 Difference]: Start difference. First operand 198 states and 210 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:37:38,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:37:38,730 INFO L93 Difference]: Finished difference Result 210 states and 224 transitions. [2021-12-06 18:37:38,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:37:38,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 13 [2021-12-06 18:37:38,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:37:38,732 INFO L225 Difference]: With dead ends: 210 [2021-12-06 18:37:38,732 INFO L226 Difference]: Without dead ends: 202 [2021-12-06 18:37:38,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:37:38,733 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 51 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:37:38,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 382 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 18:37:38,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-12-06 18:37:38,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 192. [2021-12-06 18:37:38,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 106 states have (on average 1.7641509433962264) internal successors, (187), 177 states have internal predecessors, (187), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-06 18:37:38,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 203 transitions. [2021-12-06 18:37:38,741 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 203 transitions. Word has length 13 [2021-12-06 18:37:38,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:37:38,742 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 203 transitions. [2021-12-06 18:37:38,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:37:38,742 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 203 transitions. [2021-12-06 18:37:38,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 18:37:38,742 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:37:38,743 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:37:38,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-06 18:37:38,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:37:38,943 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-12-06 18:37:38,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:37:38,944 INFO L85 PathProgramCache]: Analyzing trace with hash -317607953, now seen corresponding path program 1 times [2021-12-06 18:37:38,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:37:38,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1282535934] [2021-12-06 18:37:38,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:37:38,945 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:37:38,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:37:38,946 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:37:38,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-06 18:37:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:38,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 18:37:38,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:37:39,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:37:39,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 18:37:39,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:37:39,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:37:39,185 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:37:39,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1282535934] [2021-12-06 18:37:39,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1282535934] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:37:39,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:37:39,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:37:39,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393370923] [2021-12-06 18:37:39,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:37:39,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:37:39,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:37:39,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:37:39,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:37:39,188 INFO L87 Difference]: Start difference. First operand 192 states and 203 transitions. Second operand has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:37:41,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:37:41,919 INFO L93 Difference]: Finished difference Result 202 states and 216 transitions. [2021-12-06 18:37:41,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 18:37:41,920 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2021-12-06 18:37:41,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:37:41,921 INFO L225 Difference]: With dead ends: 202 [2021-12-06 18:37:41,922 INFO L226 Difference]: Without dead ends: 202 [2021-12-06 18:37:41,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=38, Invalid=93, Unknown=1, NotChecked=0, Total=132 [2021-12-06 18:37:41,923 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 59 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 120 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 18:37:41,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 582 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 452 Invalid, 0 Unknown, 120 Unchecked, 0.7s Time] [2021-12-06 18:37:41,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-12-06 18:37:41,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 191. [2021-12-06 18:37:41,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 106 states have (on average 1.7547169811320755) internal successors, (186), 176 states have internal predecessors, (186), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-06 18:37:41,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 202 transitions. [2021-12-06 18:37:41,930 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 202 transitions. Word has length 16 [2021-12-06 18:37:41,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:37:41,931 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 202 transitions. [2021-12-06 18:37:41,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:37:41,931 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 202 transitions. [2021-12-06 18:37:41,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 18:37:41,931 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:37:41,931 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:37:41,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-06 18:37:42,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:37:42,132 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-12-06 18:37:42,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:37:42,133 INFO L85 PathProgramCache]: Analyzing trace with hash -317607954, now seen corresponding path program 1 times [2021-12-06 18:37:42,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:37:42,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2047699918] [2021-12-06 18:37:42,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:37:42,133 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:37:42,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:37:42,134 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:37:42,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-06 18:37:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:42,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 18:37:42,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:37:42,268 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 18:37:42,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-12-06 18:37:42,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:37:42,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:37:42,305 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:37:42,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2047699918] [2021-12-06 18:37:42,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2047699918] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:37:42,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:37:42,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:37:42,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863886457] [2021-12-06 18:37:42,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:37:42,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:37:42,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:37:42,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:37:42,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:37:42,306 INFO L87 Difference]: Start difference. First operand 191 states and 202 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:37:42,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:37:42,816 INFO L93 Difference]: Finished difference Result 243 states and 257 transitions. [2021-12-06 18:37:42,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 18:37:42,817 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-12-06 18:37:42,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:37:42,819 INFO L225 Difference]: With dead ends: 243 [2021-12-06 18:37:42,819 INFO L226 Difference]: Without dead ends: 243 [2021-12-06 18:37:42,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:37:42,820 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 280 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 107 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 18:37:42,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 480 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 317 Invalid, 0 Unknown, 107 Unchecked, 0.5s Time] [2021-12-06 18:37:42,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-12-06 18:37:42,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 201. [2021-12-06 18:37:42,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 115 states have (on average 1.7391304347826086) internal successors, (200), 185 states have internal predecessors, (200), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2021-12-06 18:37:42,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 218 transitions. [2021-12-06 18:37:42,829 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 218 transitions. Word has length 16 [2021-12-06 18:37:42,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:37:42,829 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 218 transitions. [2021-12-06 18:37:42,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:37:42,829 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 218 transitions. [2021-12-06 18:37:42,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-06 18:37:42,830 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:37:42,830 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:37:42,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-06 18:37:43,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:37:43,032 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-12-06 18:37:43,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:37:43,033 INFO L85 PathProgramCache]: Analyzing trace with hash -778576348, now seen corresponding path program 1 times [2021-12-06 18:37:43,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:37:43,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848859096] [2021-12-06 18:37:43,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:37:43,035 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:37:43,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:37:43,037 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:37:43,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-06 18:37:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:43,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 18:37:43,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:37:43,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:37:43,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:37:43,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:37:43,177 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:37:43,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848859096] [2021-12-06 18:37:43,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848859096] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:37:43,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:37:43,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:37:43,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517411085] [2021-12-06 18:37:43,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:37:43,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:37:43,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:37:43,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:37:43,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:37:43,179 INFO L87 Difference]: Start difference. First operand 201 states and 218 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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) [2021-12-06 18:37:43,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:37:43,690 INFO L93 Difference]: Finished difference Result 250 states and 274 transitions. [2021-12-06 18:37:43,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:37:43,690 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 25 [2021-12-06 18:37:43,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:37:43,692 INFO L225 Difference]: With dead ends: 250 [2021-12-06 18:37:43,692 INFO L226 Difference]: Without dead ends: 250 [2021-12-06 18:37:43,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:37:43,692 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 63 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 18:37:43,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 623 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 18:37:43,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-12-06 18:37:43,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 225. [2021-12-06 18:37:43,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 141 states have (on average 1.7588652482269505) internal successors, (248), 209 states have internal predecessors, (248), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2021-12-06 18:37:43,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 266 transitions. [2021-12-06 18:37:43,698 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 266 transitions. Word has length 25 [2021-12-06 18:37:43,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:37:43,699 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 266 transitions. [2021-12-06 18:37:43,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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) [2021-12-06 18:37:43,699 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 266 transitions. [2021-12-06 18:37:43,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-06 18:37:43,699 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:37:43,699 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:37:43,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-12-06 18:37:43,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:37:43,901 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-12-06 18:37:43,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:37:43,901 INFO L85 PathProgramCache]: Analyzing trace with hash -778576347, now seen corresponding path program 1 times [2021-12-06 18:37:43,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:37:43,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037816733] [2021-12-06 18:37:43,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:37:43,902 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:37:43,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:37:43,903 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:37:43,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-06 18:37:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:44,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 18:37:44,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:37:44,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:37:44,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:37:44,077 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:37:44,078 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:37:44,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037816733] [2021-12-06 18:37:44,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037816733] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:37:44,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:37:44,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:37:44,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129733775] [2021-12-06 18:37:44,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:37:44,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:37:44,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:37:44,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:37:44,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:37:44,079 INFO L87 Difference]: Start difference. First operand 225 states and 266 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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) [2021-12-06 18:37:44,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:37:44,801 INFO L93 Difference]: Finished difference Result 282 states and 309 transitions. [2021-12-06 18:37:44,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:37:44,801 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 25 [2021-12-06 18:37:44,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:37:44,803 INFO L225 Difference]: With dead ends: 282 [2021-12-06 18:37:44,803 INFO L226 Difference]: Without dead ends: 282 [2021-12-06 18:37:44,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:37:44,804 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 97 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 18:37:44,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 621 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 18:37:44,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-12-06 18:37:44,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 227. [2021-12-06 18:37:44,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 144 states have (on average 1.7361111111111112) internal successors, (250), 210 states have internal predecessors, (250), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 18:37:44,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 271 transitions. [2021-12-06 18:37:44,810 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 271 transitions. Word has length 25 [2021-12-06 18:37:44,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:37:44,810 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 271 transitions. [2021-12-06 18:37:44,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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) [2021-12-06 18:37:44,810 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 271 transitions. [2021-12-06 18:37:44,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-06 18:37:44,811 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:37:44,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:37:44,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-06 18:37:45,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:37:45,013 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-12-06 18:37:45,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:37:45,014 INFO L85 PathProgramCache]: Analyzing trace with hash -887499840, now seen corresponding path program 1 times [2021-12-06 18:37:45,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:37:45,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [885715664] [2021-12-06 18:37:45,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:37:45,016 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:37:45,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:37:45,019 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:37:45,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-06 18:37:45,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:45,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 18:37:45,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:37:45,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:37:45,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:37:45,237 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:37:45,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [885715664] [2021-12-06 18:37:45,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [885715664] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:37:45,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:37:45,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:37:45,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258176226] [2021-12-06 18:37:45,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:37:45,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:37:45,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:37:45,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:37:45,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:37:45,239 INFO L87 Difference]: Start difference. First operand 227 states and 271 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 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) [2021-12-06 18:37:45,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:37:45,301 INFO L93 Difference]: Finished difference Result 227 states and 270 transitions. [2021-12-06 18:37:45,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:37:45,301 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 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 27 [2021-12-06 18:37:45,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:37:45,303 INFO L225 Difference]: With dead ends: 227 [2021-12-06 18:37:45,303 INFO L226 Difference]: Without dead ends: 227 [2021-12-06 18:37:45,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:37:45,303 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 112 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:37:45,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 802 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:37:45,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-12-06 18:37:45,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2021-12-06 18:37:45,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 144 states have (on average 1.7291666666666667) internal successors, (249), 210 states have internal predecessors, (249), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 18:37:45,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 270 transitions. [2021-12-06 18:37:45,309 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 270 transitions. Word has length 27 [2021-12-06 18:37:45,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:37:45,309 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 270 transitions. [2021-12-06 18:37:45,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 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) [2021-12-06 18:37:45,310 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 270 transitions. [2021-12-06 18:37:45,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 18:37:45,310 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:37:45,311 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:37:45,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-12-06 18:37:45,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:37:45,511 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-12-06 18:37:45,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:37:45,511 INFO L85 PathProgramCache]: Analyzing trace with hash -542371696, now seen corresponding path program 1 times [2021-12-06 18:37:45,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:37:45,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [811566668] [2021-12-06 18:37:45,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:37:45,512 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:37:45,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:37:45,513 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:37:45,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-06 18:37:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:45,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 18:37:45,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:37:45,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:37:45,722 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 18:37:45,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-12-06 18:37:45,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:37:45,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:37:45,761 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:37:45,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [811566668] [2021-12-06 18:37:45,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [811566668] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:37:45,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:37:45,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:37:45,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569885742] [2021-12-06 18:37:45,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:37:45,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:37:45,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:37:45,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:37:45,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:37:45,762 INFO L87 Difference]: Start difference. First operand 227 states and 270 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:37:46,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:37:46,292 INFO L93 Difference]: Finished difference Result 299 states and 329 transitions. [2021-12-06 18:37:46,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:37:46,292 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2021-12-06 18:37:46,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:37:46,294 INFO L225 Difference]: With dead ends: 299 [2021-12-06 18:37:46,294 INFO L226 Difference]: Without dead ends: 299 [2021-12-06 18:37:46,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:37:46,294 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 205 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 157 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 18:37:46,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 520 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 328 Invalid, 0 Unknown, 157 Unchecked, 0.5s Time] [2021-12-06 18:37:46,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-12-06 18:37:46,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 224. [2021-12-06 18:37:46,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 144 states have (on average 1.6805555555555556) internal successors, (242), 207 states have internal predecessors, (242), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 18:37:46,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 263 transitions. [2021-12-06 18:37:46,301 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 263 transitions. Word has length 33 [2021-12-06 18:37:46,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:37:46,301 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 263 transitions. [2021-12-06 18:37:46,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:37:46,301 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 263 transitions. [2021-12-06 18:37:46,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 18:37:46,302 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:37:46,302 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:37:46,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-12-06 18:37:46,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:37:46,502 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-12-06 18:37:46,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:37:46,503 INFO L85 PathProgramCache]: Analyzing trace with hash -542371695, now seen corresponding path program 1 times [2021-12-06 18:37:46,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:37:46,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1595434334] [2021-12-06 18:37:46,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:37:46,504 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:37:46,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:37:46,505 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:37:46,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-06 18:37:46,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:46,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 18:37:46,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:37:46,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:37:46,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:37:46,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:37:46,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 18:37:46,747 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 18:37:46,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-12-06 18:37:46,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:37:46,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:37:46,818 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:37:46,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1595434334] [2021-12-06 18:37:46,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1595434334] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:37:46,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:37:46,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:37:46,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908763579] [2021-12-06 18:37:46,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:37:46,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:37:46,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:37:46,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:37:46,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:37:46,819 INFO L87 Difference]: Start difference. First operand 224 states and 263 transitions. Second operand has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:37:47,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:37:47,575 INFO L93 Difference]: Finished difference Result 279 states and 306 transitions. [2021-12-06 18:37:47,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:37:47,576 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2021-12-06 18:37:47,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:37:47,577 INFO L225 Difference]: With dead ends: 279 [2021-12-06 18:37:47,577 INFO L226 Difference]: Without dead ends: 279 [2021-12-06 18:37:47,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:37:47,578 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 176 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 153 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 18:37:47,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 479 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 379 Invalid, 0 Unknown, 153 Unchecked, 0.7s Time] [2021-12-06 18:37:47,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-12-06 18:37:47,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 224. [2021-12-06 18:37:47,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 144 states have (on average 1.6527777777777777) internal successors, (238), 207 states have internal predecessors, (238), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 18:37:47,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 259 transitions. [2021-12-06 18:37:47,584 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 259 transitions. Word has length 33 [2021-12-06 18:37:47,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:37:47,585 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 259 transitions. [2021-12-06 18:37:47,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:37:47,585 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 259 transitions. [2021-12-06 18:37:47,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-06 18:37:47,585 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:37:47,586 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:37:47,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-12-06 18:37:47,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:37:47,786 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-12-06 18:37:47,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:37:47,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1528197373, now seen corresponding path program 1 times [2021-12-06 18:37:47,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:37:47,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446685987] [2021-12-06 18:37:47,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:37:47,787 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:37:47,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:37:47,788 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:37:47,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-06 18:37:47,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:47,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 18:37:47,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:37:47,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:37:47,902 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:37:47,902 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:37:47,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446685987] [2021-12-06 18:37:47,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [446685987] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:37:47,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:37:47,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:37:47,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385570150] [2021-12-06 18:37:47,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:37:47,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:37:47,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:37:47,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:37:47,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:37:47,904 INFO L87 Difference]: Start difference. First operand 224 states and 259 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:37:47,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:37:47,921 INFO L93 Difference]: Finished difference Result 266 states and 305 transitions. [2021-12-06 18:37:47,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:37:47,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2021-12-06 18:37:47,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:37:47,923 INFO L225 Difference]: With dead ends: 266 [2021-12-06 18:37:47,923 INFO L226 Difference]: Without dead ends: 266 [2021-12-06 18:37:47,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:37:47,924 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 36 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:37:47,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 571 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:37:47,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-12-06 18:37:47,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 228. [2021-12-06 18:37:47,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 148 states have (on average 1.635135135135135) internal successors, (242), 211 states have internal predecessors, (242), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 18:37:47,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 263 transitions. [2021-12-06 18:37:47,930 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 263 transitions. Word has length 35 [2021-12-06 18:37:47,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:37:47,930 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 263 transitions. [2021-12-06 18:37:47,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:37:47,931 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 263 transitions. [2021-12-06 18:37:47,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 18:37:47,931 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:37:47,931 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:37:47,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-12-06 18:37:48,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:37:48,132 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-12-06 18:37:48,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:37:48,132 INFO L85 PathProgramCache]: Analyzing trace with hash -129478379, now seen corresponding path program 1 times [2021-12-06 18:37:48,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:37:48,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [694507590] [2021-12-06 18:37:48,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:37:48,133 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:37:48,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:37:48,134 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:37:48,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-06 18:37:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:48,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 18:37:48,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:37:48,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:37:48,569 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:37:48,569 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:37:48,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [694507590] [2021-12-06 18:37:48,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [694507590] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:37:48,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:37:48,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:37:48,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146223175] [2021-12-06 18:37:48,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:37:48,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:37:48,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:37:48,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:37:48,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:37:48,571 INFO L87 Difference]: Start difference. First operand 228 states and 263 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:37:48,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:37:48,603 INFO L93 Difference]: Finished difference Result 311 states and 350 transitions. [2021-12-06 18:37:48,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:37:48,604 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2021-12-06 18:37:48,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:37:48,606 INFO L225 Difference]: With dead ends: 311 [2021-12-06 18:37:48,606 INFO L226 Difference]: Without dead ends: 311 [2021-12-06 18:37:48,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:37:48,607 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 133 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 106 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:37:48,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 866 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 106 Unchecked, 0.0s Time] [2021-12-06 18:37:48,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-12-06 18:37:48,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 247. [2021-12-06 18:37:48,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 166 states have (on average 1.5783132530120483) internal successors, (262), 229 states have internal predecessors, (262), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 18:37:48,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 283 transitions. [2021-12-06 18:37:48,616 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 283 transitions. Word has length 36 [2021-12-06 18:37:48,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:37:48,616 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 283 transitions. [2021-12-06 18:37:48,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:37:48,617 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 283 transitions. [2021-12-06 18:37:48,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-06 18:37:48,617 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:37:48,617 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:37:48,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-12-06 18:37:48,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:37:48,819 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-12-06 18:37:48,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:37:48,820 INFO L85 PathProgramCache]: Analyzing trace with hash 189837640, now seen corresponding path program 1 times [2021-12-06 18:37:48,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:37:48,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1590529628] [2021-12-06 18:37:48,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:37:48,822 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:37:48,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:37:48,825 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:37:48,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-06 18:37:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:48,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 18:37:48,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:37:48,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:37:48,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:37:48,996 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:37:48,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1590529628] [2021-12-06 18:37:48,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1590529628] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:37:48,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:37:48,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:37:48,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537797957] [2021-12-06 18:37:48,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:37:48,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:37:48,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:37:48,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:37:48,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:37:48,997 INFO L87 Difference]: Start difference. First operand 247 states and 283 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:37:49,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:37:49,017 INFO L93 Difference]: Finished difference Result 270 states and 308 transitions. [2021-12-06 18:37:49,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:37:49,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2021-12-06 18:37:49,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:37:49,019 INFO L225 Difference]: With dead ends: 270 [2021-12-06 18:37:49,019 INFO L226 Difference]: Without dead ends: 270 [2021-12-06 18:37:49,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:37:49,019 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 43 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:37:49,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 569 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:37:49,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-12-06 18:37:49,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 249. [2021-12-06 18:37:49,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 168 states have (on average 1.5714285714285714) internal successors, (264), 231 states have internal predecessors, (264), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 18:37:49,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 285 transitions. [2021-12-06 18:37:49,025 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 285 transitions. Word has length 40 [2021-12-06 18:37:49,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:37:49,025 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 285 transitions. [2021-12-06 18:37:49,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:37:49,025 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 285 transitions. [2021-12-06 18:37:49,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-06 18:37:49,026 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:37:49,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:37:49,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-12-06 18:37:49,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:37:49,226 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-12-06 18:37:49,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:37:49,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1958974084, now seen corresponding path program 1 times [2021-12-06 18:37:49,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:37:49,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286347367] [2021-12-06 18:37:49,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:37:49,227 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:37:49,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:37:49,228 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:37:49,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-06 18:37:49,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:49,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 18:37:49,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:37:49,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:37:49,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:37:49,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:37:49,440 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:37:49,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1286347367] [2021-12-06 18:37:49,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1286347367] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:37:49,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:37:49,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:37:49,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988479021] [2021-12-06 18:37:49,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:37:49,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:37:49,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:37:49,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:37:49,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:37:49,442 INFO L87 Difference]: Start difference. First operand 249 states and 285 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-12-06 18:37:50,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:37:50,174 INFO L93 Difference]: Finished difference Result 292 states and 321 transitions. [2021-12-06 18:37:50,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:37:50,175 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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 42 [2021-12-06 18:37:50,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:37:50,176 INFO L225 Difference]: With dead ends: 292 [2021-12-06 18:37:50,176 INFO L226 Difference]: Without dead ends: 292 [2021-12-06 18:37:50,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:37:50,177 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 119 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 18:37:50,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 802 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 18:37:50,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-12-06 18:37:50,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 248. [2021-12-06 18:37:50,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 168 states have (on average 1.5535714285714286) internal successors, (261), 230 states have internal predecessors, (261), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 18:37:50,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 282 transitions. [2021-12-06 18:37:50,182 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 282 transitions. Word has length 42 [2021-12-06 18:37:50,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:37:50,182 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 282 transitions. [2021-12-06 18:37:50,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-12-06 18:37:50,183 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 282 transitions. [2021-12-06 18:37:50,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-06 18:37:50,183 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:37:50,183 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:37:50,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-12-06 18:37:50,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:37:50,385 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-12-06 18:37:50,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:37:50,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1958974083, now seen corresponding path program 1 times [2021-12-06 18:37:50,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:37:50,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2052836016] [2021-12-06 18:37:50,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:37:50,388 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:37:50,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:37:50,390 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:37:50,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-06 18:37:50,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:50,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 18:37:50,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:37:50,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:37:50,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:37:50,672 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:37:50,672 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:37:50,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2052836016] [2021-12-06 18:37:50,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2052836016] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:37:50,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:37:50,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:37:50,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234693707] [2021-12-06 18:37:50,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:37:50,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:37:50,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:37:50,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:37:50,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:37:50,673 INFO L87 Difference]: Start difference. First operand 248 states and 282 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-12-06 18:37:51,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:37:51,698 INFO L93 Difference]: Finished difference Result 317 states and 346 transitions. [2021-12-06 18:37:51,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:37:51,698 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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 42 [2021-12-06 18:37:51,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:37:51,700 INFO L225 Difference]: With dead ends: 317 [2021-12-06 18:37:51,700 INFO L226 Difference]: Without dead ends: 317 [2021-12-06 18:37:51,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:37:51,701 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 142 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:37:51,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 833 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 18:37:51,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-12-06 18:37:51,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 248. [2021-12-06 18:37:51,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 168 states have (on average 1.5416666666666667) internal successors, (259), 230 states have internal predecessors, (259), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 18:37:51,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 280 transitions. [2021-12-06 18:37:51,706 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 280 transitions. Word has length 42 [2021-12-06 18:37:51,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:37:51,706 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 280 transitions. [2021-12-06 18:37:51,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2021-12-06 18:37:51,706 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 280 transitions. [2021-12-06 18:37:51,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-06 18:37:51,707 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:37:51,707 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:37:51,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-12-06 18:37:51,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:37:51,908 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-12-06 18:37:51,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:37:51,909 INFO L85 PathProgramCache]: Analyzing trace with hash 2045419631, now seen corresponding path program 1 times [2021-12-06 18:37:51,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:37:51,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [839950504] [2021-12-06 18:37:51,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:37:51,911 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:37:51,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:37:51,911 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:37:51,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-12-06 18:37:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:52,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-06 18:37:52,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:37:52,148 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 18:37:52,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-12-06 18:37:52,346 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-12-06 18:37:52,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 24 [2021-12-06 18:37:52,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2021-12-06 18:37:52,555 INFO L354 Elim1Store]: treesize reduction 4, result has 85.7 percent of original size [2021-12-06 18:37:52,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 49 [2021-12-06 18:37:55,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:37:55,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:37:55,695 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-12-06 18:37:55,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 35 [2021-12-06 18:37:56,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:37:56,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:37:56,048 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:37:56,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [839950504] [2021-12-06 18:37:56,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [839950504] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:37:56,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:37:56,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 18:37:56,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222412638] [2021-12-06 18:37:56,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:37:56,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 18:37:56,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:37:56,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 18:37:56,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-12-06 18:37:56,049 INFO L87 Difference]: Start difference. First operand 248 states and 280 transitions. Second operand has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:37:56,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:37:56,298 INFO L93 Difference]: Finished difference Result 258 states and 292 transitions. [2021-12-06 18:37:56,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 18:37:56,299 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2021-12-06 18:37:56,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:37:56,300 INFO L225 Difference]: With dead ends: 258 [2021-12-06 18:37:56,300 INFO L226 Difference]: Without dead ends: 258 [2021-12-06 18:37:56,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-12-06 18:37:56,301 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 25 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 460 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:37:56,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 1263 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 136 Invalid, 0 Unknown, 460 Unchecked, 0.2s Time] [2021-12-06 18:37:56,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-12-06 18:37:56,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 256. [2021-12-06 18:37:56,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 176 states have (on average 1.5284090909090908) internal successors, (269), 238 states have internal predecessors, (269), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 18:37:56,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 290 transitions. [2021-12-06 18:37:56,305 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 290 transitions. Word has length 42 [2021-12-06 18:37:56,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:37:56,306 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 290 transitions. [2021-12-06 18:37:56,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:37:56,306 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 290 transitions. [2021-12-06 18:37:56,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-06 18:37:56,306 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:37:56,306 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:37:56,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-12-06 18:37:56,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:37:56,507 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-12-06 18:37:56,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:37:56,507 INFO L85 PathProgramCache]: Analyzing trace with hash 2045419632, now seen corresponding path program 1 times [2021-12-06 18:37:56,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:37:56,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2039158001] [2021-12-06 18:37:56,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:37:56,508 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:37:56,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:37:56,508 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:37:56,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-12-06 18:37:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:56,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 35 conjunts are in the unsatisfiable core [2021-12-06 18:37:56,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:37:56,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:37:56,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 18:37:56,786 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-06 18:37:56,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 25 [2021-12-06 18:37:56,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:37:56,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 18:37:57,091 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 18:37:57,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 18:37:57,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:37:57,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:37:57,241 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:37:57,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2039158001] [2021-12-06 18:37:57,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2039158001] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:37:57,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:37:57,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 18:37:57,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006591383] [2021-12-06 18:37:57,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:37:57,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 18:37:57,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:37:57,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 18:37:57,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-12-06 18:37:57,242 INFO L87 Difference]: Start difference. First operand 256 states and 290 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:37:58,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:37:58,358 INFO L93 Difference]: Finished difference Result 264 states and 297 transitions. [2021-12-06 18:37:58,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 18:37:58,358 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2021-12-06 18:37:58,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:37:58,360 INFO L225 Difference]: With dead ends: 264 [2021-12-06 18:37:58,360 INFO L226 Difference]: Without dead ends: 264 [2021-12-06 18:37:58,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-12-06 18:37:58,360 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 286 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 272 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:37:58,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 703 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 658 Invalid, 0 Unknown, 272 Unchecked, 1.0s Time] [2021-12-06 18:37:58,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-12-06 18:37:58,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 254. [2021-12-06 18:37:58,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 176 states have (on average 1.5113636363636365) internal successors, (266), 236 states have internal predecessors, (266), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 18:37:58,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 287 transitions. [2021-12-06 18:37:58,365 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 287 transitions. Word has length 42 [2021-12-06 18:37:58,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:37:58,365 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 287 transitions. [2021-12-06 18:37:58,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:37:58,366 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 287 transitions. [2021-12-06 18:37:58,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-06 18:37:58,366 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:37:58,366 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:37:58,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-12-06 18:37:58,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:37:58,567 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-12-06 18:37:58,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:37:58,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1016480774, now seen corresponding path program 1 times [2021-12-06 18:37:58,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:37:58,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [621186922] [2021-12-06 18:37:58,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:37:58,570 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:37:58,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:37:58,571 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:37:58,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-12-06 18:37:58,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:58,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 18:37:58,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:37:58,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:37:58,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:37:58,699 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:37:58,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [621186922] [2021-12-06 18:37:58,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [621186922] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:37:58,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:37:58,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:37:58,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686552260] [2021-12-06 18:37:58,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:37:58,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:37:58,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:37:58,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:37:58,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:37:58,700 INFO L87 Difference]: Start difference. First operand 254 states and 287 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:37:58,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:37:58,720 INFO L93 Difference]: Finished difference Result 276 states and 308 transitions. [2021-12-06 18:37:58,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:37:58,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2021-12-06 18:37:58,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:37:58,721 INFO L225 Difference]: With dead ends: 276 [2021-12-06 18:37:58,722 INFO L226 Difference]: Without dead ends: 276 [2021-12-06 18:37:58,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:37:58,722 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 48 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:37:58,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 549 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:37:58,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-12-06 18:37:58,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 256. [2021-12-06 18:37:58,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 178 states have (on average 1.5) internal successors, (267), 238 states have internal predecessors, (267), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-12-06 18:37:58,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 288 transitions. [2021-12-06 18:37:58,728 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 288 transitions. Word has length 43 [2021-12-06 18:37:58,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:37:58,728 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 288 transitions. [2021-12-06 18:37:58,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 18:37:58,728 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 288 transitions. [2021-12-06 18:37:58,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-06 18:37:58,729 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:37:58,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:37:58,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-12-06 18:37:58,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:37:58,929 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting free_reportsErr0REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-12-06 18:37:58,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:37:58,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1899527314, now seen corresponding path program 1 times [2021-12-06 18:37:58,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:37:58,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1835889047] [2021-12-06 18:37:58,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:37:58,930 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:37:58,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:37:58,931 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:37:58,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-12-06 18:37:59,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:37:59,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 43 conjunts are in the unsatisfiable core [2021-12-06 18:37:59,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:37:59,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:37:59,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:37:59,273 INFO L354 Elim1Store]: treesize reduction 54, result has 37.9 percent of original size [2021-12-06 18:37:59,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 59 [2021-12-06 18:37:59,345 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-06 18:37:59,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2021-12-06 18:37:59,643 INFO L354 Elim1Store]: treesize reduction 54, result has 37.9 percent of original size [2021-12-06 18:37:59,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 45 treesize of output 66 [2021-12-06 18:38:00,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 45 [2021-12-06 18:38:00,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 43 [2021-12-06 18:38:01,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:01,995 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-06 18:38:01,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 49 [2021-12-06 18:38:02,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2021-12-06 18:38:02,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:38:02,333 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:38:02,333 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:38:02,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1835889047] [2021-12-06 18:38:02,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1835889047] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:38:02,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:38:02,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-12-06 18:38:02,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250667487] [2021-12-06 18:38:02,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:38:02,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 18:38:02,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:38:02,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 18:38:02,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2021-12-06 18:38:02,334 INFO L87 Difference]: Start difference. First operand 256 states and 288 transitions. Second operand has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:38:03,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:38:03,041 INFO L93 Difference]: Finished difference Result 276 states and 311 transitions. [2021-12-06 18:38:03,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 18:38:03,041 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2021-12-06 18:38:03,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:38:03,042 INFO L225 Difference]: With dead ends: 276 [2021-12-06 18:38:03,042 INFO L226 Difference]: Without dead ends: 276 [2021-12-06 18:38:03,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2021-12-06 18:38:03,043 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 69 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 414 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 18:38:03,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 1180 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 395 Invalid, 0 Unknown, 414 Unchecked, 0.6s Time] [2021-12-06 18:38:03,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-12-06 18:38:03,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 265. [2021-12-06 18:38:03,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 185 states have (on average 1.5027027027027027) internal successors, (278), 246 states have internal predecessors, (278), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2021-12-06 18:38:03,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 302 transitions. [2021-12-06 18:38:03,048 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 302 transitions. Word has length 45 [2021-12-06 18:38:03,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:38:03,048 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 302 transitions. [2021-12-06 18:38:03,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:38:03,048 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 302 transitions. [2021-12-06 18:38:03,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-06 18:38:03,049 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:38:03,049 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:38:03,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-12-06 18:38:03,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:38:03,250 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting free_reportsErr1REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-12-06 18:38:03,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:38:03,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1899527313, now seen corresponding path program 1 times [2021-12-06 18:38:03,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:38:03,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1872447349] [2021-12-06 18:38:03,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:38:03,253 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:38:03,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:38:03,255 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:38:03,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-12-06 18:38:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:03,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 67 conjunts are in the unsatisfiable core [2021-12-06 18:38:03,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:38:03,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:38:03,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:38:03,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:38:03,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:38:03,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:03,860 INFO L354 Elim1Store]: treesize reduction 27, result has 32.5 percent of original size [2021-12-06 18:38:03,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 47 [2021-12-06 18:38:03,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:03,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 18:38:03,982 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-06 18:38:03,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2021-12-06 18:38:03,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-12-06 18:38:04,349 INFO L354 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2021-12-06 18:38:04,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2021-12-06 18:38:04,375 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-12-06 18:38:04,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2021-12-06 18:38:04,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 18:38:04,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-06 18:38:04,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-06 18:38:04,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 18:38:05,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 18:38:05,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-12-06 18:38:05,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:38:05,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:38:05,773 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:38:05,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1872447349] [2021-12-06 18:38:05,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1872447349] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:38:05,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:38:05,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-06 18:38:05,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922455982] [2021-12-06 18:38:05,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:38:05,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-06 18:38:05,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:38:05,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-06 18:38:05,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2021-12-06 18:38:05,775 INFO L87 Difference]: Start difference. First operand 265 states and 302 transitions. Second operand has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:38:06,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:38:06,387 INFO L93 Difference]: Finished difference Result 266 states and 302 transitions. [2021-12-06 18:38:06,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 18:38:06,387 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2021-12-06 18:38:06,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:38:06,389 INFO L225 Difference]: With dead ends: 266 [2021-12-06 18:38:06,389 INFO L226 Difference]: Without dead ends: 266 [2021-12-06 18:38:06,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2021-12-06 18:38:06,389 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 25 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 745 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:38:06,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 1499 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 128 Invalid, 0 Unknown, 745 Unchecked, 0.4s Time] [2021-12-06 18:38:06,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-12-06 18:38:06,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 265. [2021-12-06 18:38:06,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 185 states have (on average 1.4972972972972973) internal successors, (277), 246 states have internal predecessors, (277), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2021-12-06 18:38:06,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 301 transitions. [2021-12-06 18:38:06,394 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 301 transitions. Word has length 45 [2021-12-06 18:38:06,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:38:06,394 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 301 transitions. [2021-12-06 18:38:06,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:38:06,395 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 301 transitions. [2021-12-06 18:38:06,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-06 18:38:06,395 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:38:06,395 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:38:06,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-12-06 18:38:06,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:38:06,596 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-12-06 18:38:06,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:38:06,596 INFO L85 PathProgramCache]: Analyzing trace with hash 218805826, now seen corresponding path program 1 times [2021-12-06 18:38:06,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:38:06,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [266469921] [2021-12-06 18:38:06,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:38:06,597 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:38:06,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:38:06,598 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:38:06,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-12-06 18:38:06,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:06,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 43 conjunts are in the unsatisfiable core [2021-12-06 18:38:06,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:38:06,964 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 18:38:06,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 19 [2021-12-06 18:38:07,117 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 18:38:07,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 19 [2021-12-06 18:38:07,256 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-12-06 18:38:07,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 49 [2021-12-06 18:38:07,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:38:07,780 INFO L354 Elim1Store]: treesize reduction 288, result has 10.8 percent of original size [2021-12-06 18:38:07,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 47 [2021-12-06 18:38:08,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 18:38:08,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 18:38:08,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 18:38:08,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 18:38:08,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 18:38:09,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:38:09,001 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:38:09,001 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:38:09,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [266469921] [2021-12-06 18:38:09,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [266469921] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:38:09,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:38:09,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-06 18:38:09,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585580892] [2021-12-06 18:38:09,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:38:09,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-06 18:38:09,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:38:09,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 18:38:09,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2021-12-06 18:38:09,003 INFO L87 Difference]: Start difference. First operand 265 states and 301 transitions. Second operand has 20 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 18 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:38:09,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:38:09,348 INFO L93 Difference]: Finished difference Result 276 states and 314 transitions. [2021-12-06 18:38:09,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 18:38:09,348 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 18 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2021-12-06 18:38:09,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:38:09,349 INFO L225 Difference]: With dead ends: 276 [2021-12-06 18:38:09,349 INFO L226 Difference]: Without dead ends: 276 [2021-12-06 18:38:09,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2021-12-06 18:38:09,350 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 66 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 922 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:38:09,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 1531 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 210 Invalid, 0 Unknown, 922 Unchecked, 0.2s Time] [2021-12-06 18:38:09,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-12-06 18:38:09,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 269. [2021-12-06 18:38:09,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 189 states have (on average 1.492063492063492) internal successors, (282), 250 states have internal predecessors, (282), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2021-12-06 18:38:09,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 306 transitions. [2021-12-06 18:38:09,355 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 306 transitions. Word has length 45 [2021-12-06 18:38:09,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:38:09,355 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 306 transitions. [2021-12-06 18:38:09,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 18 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:38:09,355 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 306 transitions. [2021-12-06 18:38:09,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-06 18:38:09,356 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:38:09,356 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:38:09,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-12-06 18:38:09,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:38:09,556 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-12-06 18:38:09,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:38:09,557 INFO L85 PathProgramCache]: Analyzing trace with hash 218805827, now seen corresponding path program 1 times [2021-12-06 18:38:09,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:38:09,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1563055641] [2021-12-06 18:38:09,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:38:09,557 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:38:09,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:38:09,558 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:38:09,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-12-06 18:38:09,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:09,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 70 conjunts are in the unsatisfiable core [2021-12-06 18:38:09,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:38:09,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:38:09,908 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 18:38:09,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 19 [2021-12-06 18:38:10,032 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:38:10,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-06 18:38:10,051 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 18:38:10,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 19 [2021-12-06 18:38:10,105 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 18:38:10,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 14 [2021-12-06 18:38:10,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-12-06 18:38:10,263 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-12-06 18:38:10,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 31 [2021-12-06 18:38:10,292 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:38:10,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 24 [2021-12-06 18:38:10,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:38:10,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:38:10,764 INFO L354 Elim1Store]: treesize reduction 288, result has 10.8 percent of original size [2021-12-06 18:38:10,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 47 [2021-12-06 18:38:10,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:10,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:10,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:10,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:10,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:10,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:10,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:10,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:10,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:10,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:10,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2021-12-06 18:38:10,958 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:38:10,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2021-12-06 18:38:10,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 18:38:11,000 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:38:11,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-06 18:38:11,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 18:38:11,139 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:38:11,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-06 18:38:11,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 18:38:11,177 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:38:11,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-06 18:38:11,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 18:38:11,335 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:38:11,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-06 18:38:11,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 18:38:11,366 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:38:11,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-06 18:38:11,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 18:38:11,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:11,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 18:38:11,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:11,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 18:38:11,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 18:38:11,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 18:38:12,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:38:12,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:38:12,101 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:38:12,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1563055641] [2021-12-06 18:38:12,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1563055641] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:38:12,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:38:12,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-12-06 18:38:12,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312197328] [2021-12-06 18:38:12,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:38:12,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-06 18:38:12,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:38:12,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-06 18:38:12,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2021-12-06 18:38:12,103 INFO L87 Difference]: Start difference. First operand 269 states and 306 transitions. Second operand has 22 states, 20 states have (on average 1.95) internal successors, (39), 18 states have internal predecessors, (39), 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) [2021-12-06 18:38:13,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:38:13,931 INFO L93 Difference]: Finished difference Result 276 states and 313 transitions. [2021-12-06 18:38:13,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 18:38:13,931 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 1.95) internal successors, (39), 18 states have internal predecessors, (39), 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 45 [2021-12-06 18:38:13,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:38:13,933 INFO L225 Difference]: With dead ends: 276 [2021-12-06 18:38:13,933 INFO L226 Difference]: Without dead ends: 276 [2021-12-06 18:38:13,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=109, Invalid=883, Unknown=0, NotChecked=0, Total=992 [2021-12-06 18:38:13,933 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 74 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 1596 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 678 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:38:13,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 1596 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 888 Invalid, 0 Unknown, 678 Unchecked, 1.3s Time] [2021-12-06 18:38:13,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-12-06 18:38:13,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 269. [2021-12-06 18:38:13,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 189 states have (on average 1.4867724867724867) internal successors, (281), 250 states have internal predecessors, (281), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2021-12-06 18:38:13,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 305 transitions. [2021-12-06 18:38:13,938 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 305 transitions. Word has length 45 [2021-12-06 18:38:13,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:38:13,939 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 305 transitions. [2021-12-06 18:38:13,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 1.95) internal successors, (39), 18 states have internal predecessors, (39), 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) [2021-12-06 18:38:13,939 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 305 transitions. [2021-12-06 18:38:13,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-06 18:38:13,939 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:38:13,939 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:38:13,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-12-06 18:38:14,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:38:14,140 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting free_reportsErr2REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-12-06 18:38:14,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:38:14,142 INFO L85 PathProgramCache]: Analyzing trace with hash -84648785, now seen corresponding path program 1 times [2021-12-06 18:38:14,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:38:14,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1858602965] [2021-12-06 18:38:14,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:38:14,142 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:38:14,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:38:14,143 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:38:14,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-12-06 18:38:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:14,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 71 conjunts are in the unsatisfiable core [2021-12-06 18:38:14,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:38:14,606 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-12-06 18:38:14,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2021-12-06 18:38:15,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:38:15,297 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-06 18:38:15,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 18:38:15,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-06 18:38:15,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:38:15,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:15,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:15,934 INFO L354 Elim1Store]: treesize reduction 27, result has 32.5 percent of original size [2021-12-06 18:38:15,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 69 [2021-12-06 18:38:16,115 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:38:16,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 54 [2021-12-06 18:38:16,630 INFO L354 Elim1Store]: treesize reduction 13, result has 68.3 percent of original size [2021-12-06 18:38:16,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 56 treesize of output 71 [2021-12-06 18:38:17,067 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 18:38:17,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 45 [2021-12-06 18:38:17,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 18:38:17,194 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 18:38:17,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 45 [2021-12-06 18:38:17,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 18:38:18,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 18:38:18,512 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:38:18,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 30 [2021-12-06 18:38:18,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:38:18,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:38:18,765 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:38:18,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1858602965] [2021-12-06 18:38:18,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1858602965] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:38:18,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:38:18,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-12-06 18:38:18,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059946688] [2021-12-06 18:38:18,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:38:18,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-06 18:38:18,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:38:18,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-06 18:38:18,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2021-12-06 18:38:18,766 INFO L87 Difference]: Start difference. First operand 269 states and 305 transitions. Second operand has 27 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:38:19,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:38:19,158 INFO L93 Difference]: Finished difference Result 269 states and 304 transitions. [2021-12-06 18:38:19,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 18:38:19,159 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2021-12-06 18:38:19,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:38:19,160 INFO L225 Difference]: With dead ends: 269 [2021-12-06 18:38:19,160 INFO L226 Difference]: Without dead ends: 269 [2021-12-06 18:38:19,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=79, Invalid=733, Unknown=0, NotChecked=0, Total=812 [2021-12-06 18:38:19,161 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 11 mSDsluCounter, 1661 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1827 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 561 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:38:19,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 1827 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 182 Invalid, 0 Unknown, 561 Unchecked, 0.3s Time] [2021-12-06 18:38:19,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-12-06 18:38:19,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2021-12-06 18:38:19,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 189 states have (on average 1.4814814814814814) internal successors, (280), 250 states have internal predecessors, (280), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2021-12-06 18:38:19,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 304 transitions. [2021-12-06 18:38:19,166 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 304 transitions. Word has length 47 [2021-12-06 18:38:19,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:38:19,166 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 304 transitions. [2021-12-06 18:38:19,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:38:19,166 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 304 transitions. [2021-12-06 18:38:19,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-06 18:38:19,167 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:38:19,167 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:38:19,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-12-06 18:38:19,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:38:19,368 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting free_reportsErr3REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-12-06 18:38:19,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:38:19,368 INFO L85 PathProgramCache]: Analyzing trace with hash -84648784, now seen corresponding path program 1 times [2021-12-06 18:38:19,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:38:19,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1244232046] [2021-12-06 18:38:19,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:38:19,369 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:38:19,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:38:19,371 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:38:19,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-12-06 18:38:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:19,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 86 conjunts are in the unsatisfiable core [2021-12-06 18:38:19,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:38:19,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:38:19,769 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 18:38:19,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-12-06 18:38:20,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:38:20,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:38:20,156 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-06 18:38:20,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 18:38:20,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:20,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 18:38:20,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-06 18:38:20,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-06 18:38:20,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:20,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 18:38:20,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:20,648 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 18:38:20,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 43 [2021-12-06 18:38:20,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2021-12-06 18:38:20,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-12-06 18:38:21,250 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-12-06 18:38:21,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-12-06 18:38:21,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 18:38:21,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2021-12-06 18:38:21,634 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 18:38:21,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 61 [2021-12-06 18:38:21,793 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 18:38:21,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 61 [2021-12-06 18:38:21,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2021-12-06 18:38:23,237 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 18:38:23,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 31 [2021-12-06 18:38:23,243 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:38:23,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 26 [2021-12-06 18:38:23,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:38:23,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:38:23,519 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:38:23,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1244232046] [2021-12-06 18:38:23,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1244232046] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:38:23,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:38:23,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-12-06 18:38:23,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780916088] [2021-12-06 18:38:23,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:38:23,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 18:38:23,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:38:23,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 18:38:23,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2021-12-06 18:38:23,520 INFO L87 Difference]: Start difference. First operand 269 states and 304 transitions. Second operand has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:38:24,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:38:24,357 INFO L93 Difference]: Finished difference Result 269 states and 303 transitions. [2021-12-06 18:38:24,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-06 18:38:24,357 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2021-12-06 18:38:24,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:38:24,358 INFO L225 Difference]: With dead ends: 269 [2021-12-06 18:38:24,359 INFO L226 Difference]: Without dead ends: 269 [2021-12-06 18:38:24,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=107, Invalid=885, Unknown=0, NotChecked=0, Total=992 [2021-12-06 18:38:24,359 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 12 mSDsluCounter, 1875 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2042 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1198 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 18:38:24,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 2042 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 348 Invalid, 0 Unknown, 1198 Unchecked, 0.6s Time] [2021-12-06 18:38:24,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-12-06 18:38:24,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2021-12-06 18:38:24,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 189 states have (on average 1.4761904761904763) internal successors, (279), 250 states have internal predecessors, (279), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2021-12-06 18:38:24,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 303 transitions. [2021-12-06 18:38:24,365 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 303 transitions. Word has length 47 [2021-12-06 18:38:24,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:38:24,365 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 303 transitions. [2021-12-06 18:38:24,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 18:38:24,365 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 303 transitions. [2021-12-06 18:38:24,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-06 18:38:24,366 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:38:24,366 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:38:24,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-12-06 18:38:24,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:38:24,567 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-12-06 18:38:24,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:38:24,568 INFO L85 PathProgramCache]: Analyzing trace with hash -180994493, now seen corresponding path program 1 times [2021-12-06 18:38:24,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:38:24,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1149118177] [2021-12-06 18:38:24,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:38:24,570 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:38:24,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:38:24,571 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:38:24,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-12-06 18:38:25,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:25,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 74 conjunts are in the unsatisfiable core [2021-12-06 18:38:25,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:38:25,136 INFO L354 Elim1Store]: treesize reduction 18, result has 53.8 percent of original size [2021-12-06 18:38:25,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 35 [2021-12-06 18:38:25,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:38:25,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:25,368 INFO L354 Elim1Store]: treesize reduction 66, result has 33.3 percent of original size [2021-12-06 18:38:25,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 77 [2021-12-06 18:38:25,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:25,488 INFO L354 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2021-12-06 18:38:25,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 53 [2021-12-06 18:38:25,900 INFO L354 Elim1Store]: treesize reduction 89, result has 33.6 percent of original size [2021-12-06 18:38:25,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 63 treesize of output 97 [2021-12-06 18:38:26,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:38:26,669 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-12-06 18:38:26,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 50 [2021-12-06 18:38:29,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:29,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:29,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:29,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:29,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:29,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:29,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:29,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:29,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:29,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:29,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2021-12-06 18:38:29,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:29,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:29,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:29,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:29,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:29,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:29,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:29,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:29,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:29,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:29,497 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 18:38:29,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 61 [2021-12-06 18:38:32,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:32,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:32,516 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 18:38:32,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 30 [2021-12-06 18:38:33,156 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:38:33,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-06 18:38:33,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 18:38:33,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:33,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:33,375 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 18:38:33,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 30 [2021-12-06 18:38:33,988 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:38:33,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-06 18:38:33,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 18:38:34,815 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:38:34,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-06 18:38:34,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 18:38:34,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:34,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:34,849 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 18:38:34,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 30 [2021-12-06 18:38:36,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:36,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 18:38:36,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:36,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:36,367 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 18:38:36,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 30 [2021-12-06 18:38:42,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 18:38:46,773 INFO L354 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2021-12-06 18:38:46,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 28 [2021-12-06 18:38:50,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:38:50,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:38:50,362 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:38:50,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1149118177] [2021-12-06 18:38:50,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1149118177] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:38:50,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:38:50,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-12-06 18:38:50,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955789105] [2021-12-06 18:38:50,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:38:50,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-06 18:38:50,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:38:50,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-06 18:38:50,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=488, Unknown=1, NotChecked=0, Total=552 [2021-12-06 18:38:50,363 INFO L87 Difference]: Start difference. First operand 269 states and 303 transitions. Second operand has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 20 states have internal predecessors, (41), 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) [2021-12-06 18:38:50,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:38:50,652 INFO L93 Difference]: Finished difference Result 271 states and 306 transitions. [2021-12-06 18:38:50,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 18:38:50,652 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 20 states have internal predecessors, (41), 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 47 [2021-12-06 18:38:50,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:38:50,653 INFO L225 Difference]: With dead ends: 271 [2021-12-06 18:38:50,654 INFO L226 Difference]: Without dead ends: 271 [2021-12-06 18:38:50,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=78, Invalid=623, Unknown=1, NotChecked=0, Total=702 [2021-12-06 18:38:50,654 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 26 mSDsluCounter, 1748 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1907 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1018 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:38:50,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 1907 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 1018 Unchecked, 0.1s Time] [2021-12-06 18:38:50,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-12-06 18:38:50,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2021-12-06 18:38:50,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 191 states have (on average 1.4764397905759161) internal successors, (282), 252 states have internal predecessors, (282), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2021-12-06 18:38:50,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 306 transitions. [2021-12-06 18:38:50,659 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 306 transitions. Word has length 47 [2021-12-06 18:38:50,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:38:50,659 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 306 transitions. [2021-12-06 18:38:50,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 20 states have internal predecessors, (41), 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) [2021-12-06 18:38:50,659 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 306 transitions. [2021-12-06 18:38:50,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-06 18:38:50,659 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:38:50,660 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:38:50,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2021-12-06 18:38:50,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:38:50,861 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-12-06 18:38:50,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:38:50,862 INFO L85 PathProgramCache]: Analyzing trace with hash -180994492, now seen corresponding path program 1 times [2021-12-06 18:38:50,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:38:50,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [392801469] [2021-12-06 18:38:50,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:38:50,864 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:38:50,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:38:50,865 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:38:50,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-12-06 18:38:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:38:51,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 103 conjunts are in the unsatisfiable core [2021-12-06 18:38:51,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:38:51,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:38:51,430 INFO L354 Elim1Store]: treesize reduction 22, result has 43.6 percent of original size [2021-12-06 18:38:51,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 34 [2021-12-06 18:38:51,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:38:51,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:38:51,762 INFO L354 Elim1Store]: treesize reduction 81, result has 35.7 percent of original size [2021-12-06 18:38:51,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 50 treesize of output 81 [2021-12-06 18:38:51,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 18:38:51,918 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-12-06 18:38:51,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 34 [2021-12-06 18:38:51,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-12-06 18:38:52,288 INFO L354 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2021-12-06 18:38:52,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2021-12-06 18:38:52,378 INFO L354 Elim1Store]: treesize reduction 40, result has 34.4 percent of original size [2021-12-06 18:38:52,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 67 [2021-12-06 18:38:52,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 32 [2021-12-06 18:38:52,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-06 18:38:53,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:53,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:53,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:53,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:53,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:53,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:53,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:53,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:53,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:53,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:53,642 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 18:38:53,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 57 [2021-12-06 18:38:53,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:53,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:53,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:53,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:53,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:53,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:53,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2021-12-06 18:38:53,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:53,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:53,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:53,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:53,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:53,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:53,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:53,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:53,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:53,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:53,682 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 18:38:53,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 71 [2021-12-06 18:38:54,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:54,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:54,422 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 18:38:54,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 46 [2021-12-06 18:38:54,485 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:38:54,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 43 [2021-12-06 18:38:54,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:54,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:54,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:54,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:54,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:54,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:54,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-12-06 18:38:54,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:54,556 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-12-06 18:38:54,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 34 [2021-12-06 18:38:54,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 18:38:54,795 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:38:54,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 43 [2021-12-06 18:38:54,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:54,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:54,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:54,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:54,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:54,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:54,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-12-06 18:38:54,857 INFO L354 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2021-12-06 18:38:54,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 42 [2021-12-06 18:38:54,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 18:38:54,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:54,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:54,921 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 18:38:54,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 46 [2021-12-06 18:38:55,291 INFO L354 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2021-12-06 18:38:55,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 42 [2021-12-06 18:38:55,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 18:38:55,336 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 18:38:55,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 43 [2021-12-06 18:38:55,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:55,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:55,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:55,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:55,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:55,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:55,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-12-06 18:38:55,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:55,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:55,385 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 18:38:55,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 46 [2021-12-06 18:38:55,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:55,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:55,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:55,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-12-06 18:38:55,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:55,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2021-12-06 18:38:55,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:55,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:38:55,788 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 18:38:55,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 46 [2021-12-06 18:39:01,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 22 [2021-12-06 18:39:02,182 INFO L354 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2021-12-06 18:39:02,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 45 [2021-12-06 18:39:02,205 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 18:39:02,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-12-06 18:39:02,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:39:02,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:39:02,617 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:39:02,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [392801469] [2021-12-06 18:39:02,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [392801469] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:39:02,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:39:02,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-12-06 18:39:02,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352280842] [2021-12-06 18:39:02,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:39:02,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-06 18:39:02,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:39:02,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-06 18:39:02,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=742, Unknown=0, NotChecked=0, Total=812 [2021-12-06 18:39:02,618 INFO L87 Difference]: Start difference. First operand 271 states and 306 transitions. Second operand has 29 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 24 states have internal predecessors, (41), 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) [2021-12-06 18:39:03,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:39:03,349 INFO L93 Difference]: Finished difference Result 350 states and 396 transitions. [2021-12-06 18:39:03,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-06 18:39:03,350 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 24 states have internal predecessors, (41), 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 47 [2021-12-06 18:39:03,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:39:03,351 INFO L225 Difference]: With dead ends: 350 [2021-12-06 18:39:03,351 INFO L226 Difference]: Without dead ends: 350 [2021-12-06 18:39:03,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 15 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=88, Invalid=968, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 18:39:03,352 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 107 mSDsluCounter, 2228 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 2396 SdHoareTripleChecker+Invalid, 1634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1212 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 18:39:03,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 2396 Invalid, 1634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 411 Invalid, 0 Unknown, 1212 Unchecked, 0.5s Time] [2021-12-06 18:39:03,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-12-06 18:39:03,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 293. [2021-12-06 18:39:03,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 213 states have (on average 1.4460093896713615) internal successors, (308), 274 states have internal predecessors, (308), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2021-12-06 18:39:03,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 332 transitions. [2021-12-06 18:39:03,357 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 332 transitions. Word has length 47 [2021-12-06 18:39:03,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:39:03,357 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 332 transitions. [2021-12-06 18:39:03,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 24 states have internal predecessors, (41), 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) [2021-12-06 18:39:03,357 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 332 transitions. [2021-12-06 18:39:03,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-06 18:39:03,358 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:39:03,358 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:39:03,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-12-06 18:39:03,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:39:03,559 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-12-06 18:39:03,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:39:03,560 INFO L85 PathProgramCache]: Analyzing trace with hash -603696318, now seen corresponding path program 1 times [2021-12-06 18:39:03,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:39:03,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1931602062] [2021-12-06 18:39:03,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:39:03,562 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:39:03,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:39:03,564 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:39:03,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-12-06 18:39:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:39:03,962 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 18:39:04,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:39:04,340 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-06 18:39:04,340 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 18:39:04,341 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr21REQUIRES_VIOLATION (75 of 76 remaining) [2021-12-06 18:39:04,343 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr0REQUIRES_VIOLATION (74 of 76 remaining) [2021-12-06 18:39:04,343 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr1REQUIRES_VIOLATION (73 of 76 remaining) [2021-12-06 18:39:04,343 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr2REQUIRES_VIOLATION (72 of 76 remaining) [2021-12-06 18:39:04,343 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr3REQUIRES_VIOLATION (71 of 76 remaining) [2021-12-06 18:39:04,343 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr4ASSERT_VIOLATIONMEMORY_FREE (70 of 76 remaining) [2021-12-06 18:39:04,343 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr5ASSERT_VIOLATIONMEMORY_FREE (69 of 76 remaining) [2021-12-06 18:39:04,344 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr6ASSERT_VIOLATIONMEMORY_FREE (68 of 76 remaining) [2021-12-06 18:39:04,344 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr7REQUIRES_VIOLATION (67 of 76 remaining) [2021-12-06 18:39:04,344 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr8REQUIRES_VIOLATION (66 of 76 remaining) [2021-12-06 18:39:04,344 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION (65 of 76 remaining) [2021-12-06 18:39:04,344 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION (64 of 76 remaining) [2021-12-06 18:39:04,344 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION (63 of 76 remaining) [2021-12-06 18:39:04,344 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION (62 of 76 remaining) [2021-12-06 18:39:04,344 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION (61 of 76 remaining) [2021-12-06 18:39:04,345 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION (60 of 76 remaining) [2021-12-06 18:39:04,345 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION (59 of 76 remaining) [2021-12-06 18:39:04,345 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION (58 of 76 remaining) [2021-12-06 18:39:04,345 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr4REQUIRES_VIOLATION (57 of 76 remaining) [2021-12-06 18:39:04,345 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr5REQUIRES_VIOLATION (56 of 76 remaining) [2021-12-06 18:39:04,345 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr6REQUIRES_VIOLATION (55 of 76 remaining) [2021-12-06 18:39:04,345 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr7REQUIRES_VIOLATION (54 of 76 remaining) [2021-12-06 18:39:04,345 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION (53 of 76 remaining) [2021-12-06 18:39:04,346 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION (52 of 76 remaining) [2021-12-06 18:39:04,346 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION (51 of 76 remaining) [2021-12-06 18:39:04,346 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION (50 of 76 remaining) [2021-12-06 18:39:04,346 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION (49 of 76 remaining) [2021-12-06 18:39:04,346 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION (48 of 76 remaining) [2021-12-06 18:39:04,346 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION (47 of 76 remaining) [2021-12-06 18:39:04,346 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION (46 of 76 remaining) [2021-12-06 18:39:04,346 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (45 of 76 remaining) [2021-12-06 18:39:04,347 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (44 of 76 remaining) [2021-12-06 18:39:04,347 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (43 of 76 remaining) [2021-12-06 18:39:04,347 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (42 of 76 remaining) [2021-12-06 18:39:04,347 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (41 of 76 remaining) [2021-12-06 18:39:04,347 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (40 of 76 remaining) [2021-12-06 18:39:04,347 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (39 of 76 remaining) [2021-12-06 18:39:04,347 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (38 of 76 remaining) [2021-12-06 18:39:04,347 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (37 of 76 remaining) [2021-12-06 18:39:04,348 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (36 of 76 remaining) [2021-12-06 18:39:04,348 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (35 of 76 remaining) [2021-12-06 18:39:04,348 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (34 of 76 remaining) [2021-12-06 18:39:04,348 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (33 of 76 remaining) [2021-12-06 18:39:04,348 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (32 of 76 remaining) [2021-12-06 18:39:04,348 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION (31 of 76 remaining) [2021-12-06 18:39:04,348 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (30 of 76 remaining) [2021-12-06 18:39:04,348 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION (29 of 76 remaining) [2021-12-06 18:39:04,348 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION (28 of 76 remaining) [2021-12-06 18:39:04,349 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION (27 of 76 remaining) [2021-12-06 18:39:04,349 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION (26 of 76 remaining) [2021-12-06 18:39:04,349 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION (25 of 76 remaining) [2021-12-06 18:39:04,349 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION (24 of 76 remaining) [2021-12-06 18:39:04,349 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION (23 of 76 remaining) [2021-12-06 18:39:04,349 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION (22 of 76 remaining) [2021-12-06 18:39:04,349 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION (21 of 76 remaining) [2021-12-06 18:39:04,349 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION (20 of 76 remaining) [2021-12-06 18:39:04,349 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION (19 of 76 remaining) [2021-12-06 18:39:04,349 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE (18 of 76 remaining) [2021-12-06 18:39:04,350 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE (17 of 76 remaining) [2021-12-06 18:39:04,350 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE (16 of 76 remaining) [2021-12-06 18:39:04,350 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATION (15 of 76 remaining) [2021-12-06 18:39:04,350 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATION (14 of 76 remaining) [2021-12-06 18:39:04,350 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE (13 of 76 remaining) [2021-12-06 18:39:04,350 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE (12 of 76 remaining) [2021-12-06 18:39:04,350 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE (11 of 76 remaining) [2021-12-06 18:39:04,350 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE (10 of 76 remaining) [2021-12-06 18:39:04,350 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE (9 of 76 remaining) [2021-12-06 18:39:04,351 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE (8 of 76 remaining) [2021-12-06 18:39:04,351 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATION (7 of 76 remaining) [2021-12-06 18:39:04,351 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40REQUIRES_VIOLATION (6 of 76 remaining) [2021-12-06 18:39:04,351 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41REQUIRES_VIOLATION (5 of 76 remaining) [2021-12-06 18:39:04,351 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42REQUIRES_VIOLATION (4 of 76 remaining) [2021-12-06 18:39:04,351 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE (3 of 76 remaining) [2021-12-06 18:39:04,351 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE (2 of 76 remaining) [2021-12-06 18:39:04,351 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_FREE (1 of 76 remaining) [2021-12-06 18:39:04,351 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_LEAK (0 of 76 remaining) [2021-12-06 18:39:04,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2021-12-06 18:39:04,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:39:04,561 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:39:04,573 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 18:39:04,598 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 18:39:04,598 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 18:39:04,599 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 18:39:04,599 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 18:39:04,599 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 18:39:04,599 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 18:39:04,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 06:39:04 BoogieIcfgContainer [2021-12-06 18:39:04,635 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 18:39:04,635 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 18:39:04,635 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 18:39:04,635 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 18:39:04,636 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:37:34" (3/4) ... [2021-12-06 18:39:04,637 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-06 18:39:04,640 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 18:39:04,640 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 18:39:04,640 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 18:39:04,640 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 18:39:04,640 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 18:39:04,640 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-12-06 18:39:04,677 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 18:39:04,678 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 18:39:04,678 INFO L158 Benchmark]: Toolchain (without parser) took 91014.47ms. Allocated memory was 54.5MB in the beginning and 86.0MB in the end (delta: 31.5MB). Free memory was 29.8MB in the beginning and 44.7MB in the end (delta: -14.9MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. [2021-12-06 18:39:04,678 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 54.5MB. Free memory is still 35.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:39:04,679 INFO L158 Benchmark]: CACSL2BoogieTranslator took 460.44ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 29.7MB in the beginning and 46.0MB in the end (delta: -16.3MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. [2021-12-06 18:39:04,679 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.51ms. Allocated memory is still 71.3MB. Free memory was 46.0MB in the beginning and 42.9MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:39:04,679 INFO L158 Benchmark]: Boogie Preprocessor took 31.62ms. Allocated memory is still 71.3MB. Free memory was 42.9MB in the beginning and 40.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:39:04,680 INFO L158 Benchmark]: RCFGBuilder took 719.17ms. Allocated memory is still 71.3MB. Free memory was 40.2MB in the beginning and 49.3MB in the end (delta: -9.1MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. [2021-12-06 18:39:04,680 INFO L158 Benchmark]: TraceAbstraction took 89700.29ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 48.5MB in the beginning and 50.3MB in the end (delta: -1.8MB). Peak memory consumption was 46.4MB. Max. memory is 16.1GB. [2021-12-06 18:39:04,680 INFO L158 Benchmark]: Witness Printer took 42.51ms. Allocated memory is still 86.0MB. Free memory was 50.3MB in the beginning and 44.7MB in the end (delta: 5.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-06 18:39:04,682 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 54.5MB. Free memory is still 35.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 460.44ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 29.7MB in the beginning and 46.0MB in the end (delta: -16.3MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.51ms. Allocated memory is still 71.3MB. Free memory was 46.0MB in the beginning and 42.9MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.62ms. Allocated memory is still 71.3MB. Free memory was 42.9MB in the beginning and 40.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 719.17ms. Allocated memory is still 71.3MB. Free memory was 40.2MB in the beginning and 49.3MB in the end (delta: -9.1MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. * TraceAbstraction took 89700.29ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 48.5MB in the beginning and 50.3MB in the end (delta: -1.8MB). Peak memory consumption was 46.4MB. Max. memory is 16.1GB. * Witness Printer took 42.51ms. Allocated memory is still 86.0MB. Free memory was 50.3MB in the beginning and 44.7MB in the end (delta: 5.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 790]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L855] struct hid_device dev; VAL [dev={2:0}, ldv_global_msg_list={1:0}] [L863] CALL entry_point() [L857] CALL probe_23(&dev) [L838] int ret = - -3; VAL [dev={2:0}, dev={2:0}, dev={2:0}, ldv_global_msg_list={1:0}, ret=3] [L839] CALL, EXPR ldv_malloc(sizeof(struct hid_report_enum)) VAL [\old(size)=1036, dev={2:0}, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L839] RET, EXPR ldv_malloc(sizeof(struct hid_report_enum)) VAL [dev={2:0}, dev={2:0}, dev={2:0}, ldv_global_msg_list={1:0}, ldv_malloc(sizeof(struct hid_report_enum))={10:0}, ret=3] [L839] struct hid_report_enum *p = (struct hid_report_enum *)ldv_malloc(sizeof(struct hid_report_enum)); [L840] COND FALSE !(p==0) VAL [dev={2:0}, dev={2:0}, dev={2:0}, ldv_global_msg_list={1:0}, p={10:0}, ret=3] [L842] CALL LDV_INIT_LIST_HEAD(&p->report_list) VAL [dev={2:0}, ldv_global_msg_list={1:0}, list={10:4}] [L540] list->next = list VAL [dev={2:0}, ldv_global_msg_list={1:0}, list={10:4}, list={10:4}] [L541] list->prev = list VAL [dev={2:0}, ldv_global_msg_list={1:0}, list={10:4}, list={10:4}] [L842] RET LDV_INIT_LIST_HEAD(&p->report_list) VAL [dev={2:0}, dev={2:0}, dev={2:0}, ldv_global_msg_list={1:0}, p={10:0}, ret=3] [L843] dev->report_enum = p VAL [dev={2:0}, dev={2:0}, dev={2:0}, ldv_global_msg_list={1:0}, p={10:0}, ret=3] [L844] CALL hid_open_report(dev) [L812] struct hid_parser *parser; [L813] struct hid_item item; VAL [dev={2:0}, device={2:0}, device={2:0}, item={18:0}, ldv_global_msg_list={1:0}] [L814] CALL, EXPR ldv_zalloc(sizeof(struct hid_parser)) VAL [dev={2:0}, ldv_global_msg_list={1:0}] [L533] EXPR, FCALL calloc(size, 1) [L533] return calloc(size, 1); VAL [\old(size)=8, \result={6:0}, calloc(size, 1)={6:0}, dev={2:0}, ldv_global_msg_list={1:0}, size=8] [L814] RET, EXPR ldv_zalloc(sizeof(struct hid_parser)) VAL [dev={2:0}, device={2:0}, device={2:0}, item={18:0}, ldv_global_msg_list={1:0}, ldv_zalloc(sizeof(struct hid_parser))={6:0}] [L814] parser = ldv_zalloc(sizeof(struct hid_parser)) [L815] COND FALSE !(!parser) VAL [dev={2:0}, device={2:0}, device={2:0}, item={18:0}, ldv_global_msg_list={1:0}, parser={6:0}] [L818] parser->device = device VAL [dev={2:0}, device={2:0}, device={2:0}, item={18:0}, ldv_global_msg_list={1:0}, parser={6:0}] [L819] CALL, EXPR ldv_positive() [L519] int r = __VERIFIER_nondet_int(); [L520] COND TRUE r>0 [L520] return r; VAL [\result=1610612738, dev={2:0}, ldv_global_msg_list={1:0}, r=1610612738] [L819] RET, EXPR ldv_positive() [L819] parser->report_id = ldv_positive() VAL [dev={2:0}, device={2:0}, device={2:0}, item={18:0}, ldv_global_msg_list={1:0}, ldv_positive()=1610612738, parser={6:0}] [L820] CALL, EXPR fetch_item(&item) [L778] COND FALSE !(__VERIFIER_nondet_int()) [L781] item->type = 0 VAL [dev={2:0}, item={18:0}, item={18:0}, ldv_global_msg_list={1:0}] [L782] item->a = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, dev={2:0}, item={18:0}, item={18:0}, ldv_global_msg_list={1:0}] [L783] item->b = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, dev={2:0}, item={18:0}, item={18:0}, ldv_global_msg_list={1:0}] [L784] item->c = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, dev={2:0}, item={18:0}, item={18:0}, ldv_global_msg_list={1:0}] [L785] return 0; VAL [\result=0, dev={2:0}, item={18:0}, item={18:0}, ldv_global_msg_list={1:0}] [L820] RET, EXPR fetch_item(&item) [L820] COND TRUE fetch_item(&item)!=-1 [L821] CALL hid_parser_main(parser, &item) [L800] EXPR parser->device VAL [dev={2:0}, item={18:0}, item={18:0}, ldv_global_msg_list={1:0}, parser={6:0}, parser={6:0}, parser->device={2:0}] [L800] EXPR parser->report_id VAL [dev={2:0}, item={18:0}, item={18:0}, ldv_global_msg_list={1:0}, parser={6:0}, parser={6:0}, parser->device={2:0}, parser->report_id=1610612738] [L800] CALL hid_register_report(parser->device, parser->report_id) [L788] EXPR device->report_enum VAL [\old(id)=1610612738, dev={2:0}, device={2:0}, device={2:0}, device->report_enum={10:0}, id=1610612738, ldv_global_msg_list={1:0}] [L788] struct hid_report_enum *report_enum = device->report_enum; [L789] struct hid_report *report; VAL [\old(id)=1610612738, dev={2:0}, device={2:0}, device={2:0}, id=1610612738, ldv_global_msg_list={1:0}, report_enum={10:0}] [L790] report_enum->report_id_hash[id] - UnprovableResult [Line: 806]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 806]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 806]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 806]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 808]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 808]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 808]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 806]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 806]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 843]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 843]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 818]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 818]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 819]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 819]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 783]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 783]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 784]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 784]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 800]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 800]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 800]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 800]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 790]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 791]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 791]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 795]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 795]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 826]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 826]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 826]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 829]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 829]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 830]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 830]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 830]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 849]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 849]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 849]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 834]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 834]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 835]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 835]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 835]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 835]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 835]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 862]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 198 locations, 76 error locations. Started 1 CEGAR loops. OverallTime: 89.6s, OverallIterations: 30, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 16.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2619 SdHoareTripleChecker+Valid, 12.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2573 mSDsluCounter, 28763 SdHoareTripleChecker+Invalid, 10.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 8123 IncrementalHoareTripleChecker+Unchecked, 23728 mSDsCounter, 210 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7764 IncrementalHoareTripleChecker+Invalid, 16097 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 210 mSolverCounterUnsat, 5035 mSDtfsCounter, 7764 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 974 GetRequests, 616 SyntacticMatches, 19 SemanticMatches, 339 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 25.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=293occurred in iteration=29, InterpolantAutomatonStates: 349, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 29 MinimizatonAttempts, 710 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.9s SatisfiabilityAnalysisTime, 61.4s InterpolantComputationTime, 985 NumberOfCodeBlocks, 985 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 909 ConstructedInterpolants, 376 QuantifiedInterpolants, 25327 SizeOfPredicates, 305 NumberOfNonLiveVariables, 5349 ConjunctsInSsa, 770 ConjunctsInUnsatCore, 29 InterpolantComputations, 29 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-06 18:39:04,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab3bd05-b5cd-428a-845b-846cfd03c527/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)