./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY --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 470d7065e9fd450e98d72326ef313763cf0710ea45f0a443b018e8a49bdf7927 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:23:48,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:23:48,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:23:48,925 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:23:48,925 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:23:48,930 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:23:48,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:23:48,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:23:48,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:23:48,944 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:23:48,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:23:48,947 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:23:48,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:23:48,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:23:48,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:23:48,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:23:48,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:23:48,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:23:48,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:23:48,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:23:48,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:23:48,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:23:48,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:23:48,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:23:48,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:23:48,988 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:23:48,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:23:48,990 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:23:48,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:23:48,992 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:23:48,993 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:23:48,994 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:23:48,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:23:48,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:23:48,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:23:48,999 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:23:49,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:23:49,000 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:23:49,000 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:23:49,001 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:23:49,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:23:49,003 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-07 07:23:49,046 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:23:49,046 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:23:49,047 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:23:49,047 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:23:49,055 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:23:49,055 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:23:49,055 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:23:49,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:23:49,056 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 07:23:49,056 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 07:23:49,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:23:49,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 07:23:49,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:23:49,058 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 07:23:49,058 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 07:23:49,058 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 07:23:49,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:23:49,059 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 07:23:49,059 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 07:23:49,059 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:23:49,059 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:23:49,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:23:49,060 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:23:49,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:23:49,060 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:23:49,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:23:49,061 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 07:23:49,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 07:23:49,061 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:23:49,062 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_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 470d7065e9fd450e98d72326ef313763cf0710ea45f0a443b018e8a49bdf7927 [2021-11-07 07:23:49,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:23:49,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:23:49,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:23:49,465 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:23:49,466 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:23:49,467 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i [2021-11-07 07:23:49,562 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/data/9ac7e7481/dfa5d17483dc4322ac6b04d180779f43/FLAG4e3ab25d0 [2021-11-07 07:23:50,202 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:23:50,202 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i [2021-11-07 07:23:50,229 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/data/9ac7e7481/dfa5d17483dc4322ac6b04d180779f43/FLAG4e3ab25d0 [2021-11-07 07:23:50,430 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/data/9ac7e7481/dfa5d17483dc4322ac6b04d180779f43 [2021-11-07 07:23:50,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:23:50,433 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-07 07:23:50,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:23:50,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:23:50,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:23:50,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:23:50" (1/1) ... [2021-11-07 07:23:50,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3db83de7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:50, skipping insertion in model container [2021-11-07 07:23:50,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:23:50" (1/1) ... [2021-11-07 07:23:50,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:23:50,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:23:50,953 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i[33021,33034] [2021-11-07 07:23:51,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:23:51,099 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) [2021-11-07 07:23:51,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@9d1a303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:51, skipping insertion in model container [2021-11-07 07:23:51,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:23:51,108 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-07 07:23:51,111 INFO L168 Benchmark]: Toolchain (without parser) took 675.77 ms. Allocated memory is still 96.5 MB. Free memory was 58.7 MB in the beginning and 63.5 MB in the end (delta: -4.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 07:23:51,113 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 96.5 MB. Free memory was 67.1 MB in the beginning and 67.1 MB in the end (delta: 25.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 07:23:51,116 INFO L168 Benchmark]: CACSL2BoogieTranslator took 659.24 ms. Allocated memory is still 96.5 MB. Free memory was 58.5 MB in the beginning and 63.9 MB in the end (delta: -5.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 07:23:51,118 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 96.5 MB. Free memory was 67.1 MB in the beginning and 67.1 MB in the end (delta: 25.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 659.24 ms. Allocated memory is still 96.5 MB. Free memory was 58.5 MB in the beginning and 63.9 MB in the end (delta: -5.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 751]: 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_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY --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 470d7065e9fd450e98d72326ef313763cf0710ea45f0a443b018e8a49bdf7927 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:23:53,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:23:53,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:23:53,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:23:53,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:23:53,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:23:53,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:23:53,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:23:53,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:23:53,614 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:23:53,615 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:23:53,617 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:23:53,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:23:53,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:23:53,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:23:53,628 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:23:53,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:23:53,630 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:23:53,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:23:53,634 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:23:53,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:23:53,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:23:53,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:23:53,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:23:53,653 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:23:53,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:23:53,654 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:23:53,656 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:23:53,657 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:23:53,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:23:53,659 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:23:53,660 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:23:53,662 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:23:53,663 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:23:53,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:23:53,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:23:53,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:23:53,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:23:53,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:23:53,669 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:23:53,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:23:53,670 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-07 07:23:53,715 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:23:53,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:23:53,716 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:23:53,716 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:23:53,718 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:23:53,719 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:23:53,719 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:23:53,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:23:53,720 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 07:23:53,720 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 07:23:53,721 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:23:53,721 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 07:23:53,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:23:53,722 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 07:23:53,722 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 07:23:53,722 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 07:23:53,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:23:53,723 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 07:23:53,723 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 07:23:53,723 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 07:23:53,723 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 07:23:53,724 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:23:53,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:23:53,724 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:23:53,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:23:53,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:23:53,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:23:53,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:23:53,725 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-07 07:23:53,726 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 07:23:53,726 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:23:53,726 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 07:23:53,726 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_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 470d7065e9fd450e98d72326ef313763cf0710ea45f0a443b018e8a49bdf7927 [2021-11-07 07:23:54,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:23:54,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:23:54,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:23:54,135 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:23:54,136 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:23:54,137 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i [2021-11-07 07:23:54,204 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/data/371fbfeee/8b899bbac7d04e0a89557291152b8e3c/FLAGc1af6a217 [2021-11-07 07:23:54,995 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:23:54,998 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i [2021-11-07 07:23:55,025 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/data/371fbfeee/8b899bbac7d04e0a89557291152b8e3c/FLAGc1af6a217 [2021-11-07 07:23:55,148 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/data/371fbfeee/8b899bbac7d04e0a89557291152b8e3c [2021-11-07 07:23:55,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:23:55,153 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-07 07:23:55,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:23:55,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:23:55,161 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:23:55,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:23:55" (1/1) ... [2021-11-07 07:23:55,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36db4dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:55, skipping insertion in model container [2021-11-07 07:23:55,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:23:55" (1/1) ... [2021-11-07 07:23:55,171 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:23:55,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:23:55,654 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i[33021,33034] [2021-11-07 07:23:55,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:23:55,761 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 07:23:55,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:23:55,810 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i[33021,33034] [2021-11-07 07:23:55,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:23:55,926 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 07:23:55,967 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i[33021,33034] [2021-11-07 07:23:56,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:23:56,068 INFO L208 MainTranslator]: Completed translation [2021-11-07 07:23:56,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:56 WrapperNode [2021-11-07 07:23:56,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:23:56,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 07:23:56,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 07:23:56,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 07:23:56,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:56" (1/1) ... [2021-11-07 07:23:56,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:56" (1/1) ... [2021-11-07 07:23:56,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:56" (1/1) ... [2021-11-07 07:23:56,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:56" (1/1) ... [2021-11-07 07:23:56,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:56" (1/1) ... [2021-11-07 07:23:56,251 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:56" (1/1) ... [2021-11-07 07:23:56,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:56" (1/1) ... [2021-11-07 07:23:56,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 07:23:56,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 07:23:56,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 07:23:56,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 07:23:56,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:56" (1/1) ... [2021-11-07 07:23:56,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:23:56,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:56,317 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 07:23:56,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 07:23:56,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-07 07:23:56,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 07:23:56,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-07 07:23:56,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-07 07:23:56,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-07 07:23:56,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-07 07:23:56,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-07 07:23:56,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-07 07:23:56,377 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-07 07:23:56,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-07 07:23:56,377 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-07 07:23:56,378 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-07 07:23:56,378 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-07 07:23:56,391 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-07 07:23:56,391 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-07 07:23:56,392 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-07 07:23:56,392 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-07 07:23:56,392 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 07:23:56,392 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-07 07:23:56,392 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-07 07:23:56,392 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-07 07:23:56,392 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-07 07:23:56,392 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-07 07:23:56,393 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-07 07:23:56,393 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-07 07:23:56,393 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-07 07:23:56,393 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-07 07:23:56,393 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-07 07:23:56,393 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-07 07:23:56,393 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-07 07:23:56,393 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-07 07:23:56,394 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-07 07:23:56,394 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-07 07:23:56,394 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-07 07:23:56,394 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-07 07:23:56,394 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-07 07:23:56,394 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-07 07:23:56,395 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-07 07:23:56,395 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-07 07:23:56,396 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-07 07:23:56,396 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-07 07:23:56,396 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-07 07:23:56,396 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-07 07:23:56,397 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-07 07:23:56,397 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-07 07:23:56,397 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-07 07:23:56,397 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-07 07:23:56,397 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-07 07:23:56,397 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-07 07:23:56,397 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-07 07:23:56,398 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-07 07:23:56,398 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-07 07:23:56,398 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-07 07:23:56,398 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-07 07:23:56,398 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-07 07:23:56,399 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-07 07:23:56,399 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-07 07:23:56,399 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-07 07:23:56,399 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-07 07:23:56,400 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-07 07:23:56,401 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-07 07:23:56,401 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-07 07:23:56,402 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-07 07:23:56,402 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-07 07:23:56,402 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-07 07:23:56,403 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-07 07:23:56,403 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-07 07:23:56,403 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-07 07:23:56,403 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-07 07:23:56,403 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-07 07:23:56,403 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-07 07:23:56,403 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-07 07:23:56,403 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-07 07:23:56,404 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-07 07:23:56,404 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-07 07:23:56,404 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-07 07:23:56,404 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-07 07:23:56,404 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-07 07:23:56,404 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-07 07:23:56,405 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-07 07:23:56,405 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-07 07:23:56,405 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-07 07:23:56,405 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-07 07:23:56,406 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-07 07:23:56,406 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-07 07:23:56,406 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-07 07:23:56,406 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-07 07:23:56,406 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-07 07:23:56,406 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-07 07:23:56,406 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-07 07:23:56,406 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-07 07:23:56,406 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-07 07:23:56,407 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-07 07:23:56,407 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-07 07:23:56,407 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-07 07:23:56,407 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-07 07:23:56,407 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-07 07:23:56,408 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-07 07:23:56,408 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-07 07:23:56,408 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-07 07:23:56,408 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-07 07:23:56,408 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-07 07:23:56,408 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-07 07:23:56,408 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-07 07:23:56,408 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-07 07:23:56,409 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-07 07:23:56,409 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-07 07:23:56,409 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-07 07:23:56,409 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-07 07:23:56,409 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-07 07:23:56,409 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-07 07:23:56,409 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-07 07:23:56,409 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-07 07:23:56,410 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-07 07:23:56,410 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-07 07:23:56,410 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-07 07:23:56,410 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-07 07:23:56,411 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-07 07:23:56,411 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-07 07:23:56,411 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-07 07:23:56,412 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-07 07:23:56,415 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-07 07:23:56,415 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-07 07:23:56,415 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-07 07:23:56,416 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-07 07:23:56,416 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-07 07:23:56,417 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-07 07:23:56,417 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-07 07:23:56,417 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-07 07:23:56,418 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-07 07:23:56,423 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-07 07:23:56,423 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-07 07:23:56,424 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-07 07:23:56,424 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-07 07:23:56,424 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-07 07:23:56,424 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-07 07:23:56,424 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-07 07:23:56,424 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-07 07:23:56,424 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-07 07:23:56,424 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-07 07:23:56,425 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-07 07:23:56,425 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-07 07:23:56,425 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-07 07:23:56,425 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-07 07:23:56,425 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-07 07:23:56,425 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-07 07:23:56,425 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-07 07:23:56,425 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-07 07:23:56,425 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-07 07:23:56,426 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-07 07:23:56,426 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-07 07:23:56,426 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-07 07:23:56,426 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-07 07:23:56,426 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-07 07:23:56,426 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-07 07:23:56,426 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-07 07:23:56,426 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-07 07:23:56,426 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-07 07:23:56,426 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-07 07:23:56,427 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-07 07:23:56,427 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-07 07:23:56,427 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-07 07:23:56,427 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-07 07:23:56,427 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-07 07:23:56,427 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-07 07:23:56,427 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-07 07:23:56,427 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-07 07:23:56,427 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-07 07:23:56,428 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-07 07:23:56,428 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-07 07:23:56,428 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-07 07:23:56,428 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-07 07:23:56,428 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-07 07:23:56,428 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-07 07:23:56,428 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-07 07:23:56,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 07:23:56,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-07 07:23:56,429 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-07 07:23:56,429 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-07 07:23:56,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 07:23:56,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 07:23:56,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 07:23:56,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 07:23:56,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 07:23:56,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-07 07:23:56,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 07:23:56,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 07:23:56,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-07 07:23:56,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 07:23:56,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 07:23:56,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-07 07:23:56,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 07:23:57,107 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:24:00,473 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 07:24:00,474 INFO L299 CfgBuilder]: Removed 31 assume(true) statements. [2021-11-07 07:24:00,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:24:00 BoogieIcfgContainer [2021-11-07 07:24:00,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 07:24:00,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 07:24:00,481 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 07:24:00,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 07:24:00,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:23:55" (1/3) ... [2021-11-07 07:24:00,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f3eb1fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:24:00, skipping insertion in model container [2021-11-07 07:24:00,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:56" (2/3) ... [2021-11-07 07:24:00,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f3eb1fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:24:00, skipping insertion in model container [2021-11-07 07:24:00,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:24:00" (3/3) ... [2021-11-07 07:24:00,492 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test1-1.i [2021-11-07 07:24:00,498 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 07:24:00,498 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 330 error locations. [2021-11-07 07:24:00,552 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 07:24:00,562 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 [2021-11-07 07:24:00,563 INFO L340 AbstractCegarLoop]: Starting to check reachability of 330 error locations. [2021-11-07 07:24:00,620 INFO L276 IsEmpty]: Start isEmpty. Operand has 676 states, 327 states have (on average 2.223241590214067) internal successors, (727), 664 states have internal predecessors, (727), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-07 07:24:00,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 07:24:00,627 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:00,628 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:24:00,628 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:24:00,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:00,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1974779480, now seen corresponding path program 1 times [2021-11-07 07:24:00,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:24:00,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366986799] [2021-11-07 07:24:00,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:00,668 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:24:00,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:24:00,671 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:24:00,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 07:24:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:00,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 07:24:00,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:00,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:00,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:24:01,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:01,045 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:24:01,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366986799] [2021-11-07 07:24:01,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1366986799] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:24:01,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:24:01,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 07:24:01,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861821492] [2021-11-07 07:24:01,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 07:24:01,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:24:01,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 07:24:01,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 07:24:01,070 INFO L87 Difference]: Start difference. First operand has 676 states, 327 states have (on average 2.223241590214067) internal successors, (727), 664 states have internal predecessors, (727), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:01,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:01,134 INFO L93 Difference]: Finished difference Result 667 states and 714 transitions. [2021-11-07 07:24:01,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 07:24:01,146 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 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 9 [2021-11-07 07:24:01,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:01,175 INFO L225 Difference]: With dead ends: 667 [2021-11-07 07:24:01,179 INFO L226 Difference]: Without dead ends: 664 [2021-11-07 07:24:01,180 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 07:24:01,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-11-07 07:24:01,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 664. [2021-11-07 07:24:01,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 322 states have (on average 2.111801242236025) internal successors, (680), 653 states have internal predecessors, (680), 16 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-07 07:24:01,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 711 transitions. [2021-11-07 07:24:01,258 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 711 transitions. Word has length 9 [2021-11-07 07:24:01,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:01,258 INFO L470 AbstractCegarLoop]: Abstraction has 664 states and 711 transitions. [2021-11-07 07:24:01,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:01,259 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 711 transitions. [2021-11-07 07:24:01,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 07:24:01,259 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:01,260 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:24:01,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 07:24:01,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:24:01,471 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:24:01,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:01,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1974779418, now seen corresponding path program 1 times [2021-11-07 07:24:01,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:24:01,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819316203] [2021-11-07 07:24:01,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:01,473 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:24:01,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:24:01,477 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:24:01,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 07:24:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:01,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 07:24:01,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:01,801 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 [2021-11-07 07:24:01,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:01,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:24:01,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:01,890 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:24:01,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819316203] [2021-11-07 07:24:01,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819316203] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:24:01,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:24:01,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 07:24:01,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228002679] [2021-11-07 07:24:01,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:24:01,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:24:01,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:24:01,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:24:01,897 INFO L87 Difference]: Start difference. First operand 664 states and 711 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:03,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:03,485 INFO L93 Difference]: Finished difference Result 622 states and 670 transitions. [2021-11-07 07:24:03,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:24:03,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 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 9 [2021-11-07 07:24:03,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:03,489 INFO L225 Difference]: With dead ends: 622 [2021-11-07 07:24:03,489 INFO L226 Difference]: Without dead ends: 622 [2021-11-07 07:24:03,490 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:24:03,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-11-07 07:24:03,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 615. [2021-11-07 07:24:03,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 322 states have (on average 1.9596273291925466) internal successors, (631), 604 states have internal predecessors, (631), 16 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-07 07:24:03,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 662 transitions. [2021-11-07 07:24:03,539 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 662 transitions. Word has length 9 [2021-11-07 07:24:03,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:03,540 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 662 transitions. [2021-11-07 07:24:03,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:03,540 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 662 transitions. [2021-11-07 07:24:03,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 07:24:03,541 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:03,541 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:24:03,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 07:24:03,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:24:03,752 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:24:03,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:03,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1974779417, now seen corresponding path program 1 times [2021-11-07 07:24:03,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:24:03,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64185745] [2021-11-07 07:24:03,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:03,754 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:24:03,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:24:03,755 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:24:03,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 07:24:03,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:03,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:24:03,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:03,988 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 [2021-11-07 07:24:04,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:04,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:24:04,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:04,120 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:24:04,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64185745] [2021-11-07 07:24:04,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64185745] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:24:04,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:24:04,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 07:24:04,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531002067] [2021-11-07 07:24:04,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:24:04,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:24:04,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:24:04,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:24:04,123 INFO L87 Difference]: Start difference. First operand 615 states and 662 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:07,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:07,134 INFO L93 Difference]: Finished difference Result 688 states and 739 transitions. [2021-11-07 07:24:07,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:24:07,135 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 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 9 [2021-11-07 07:24:07,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:07,140 INFO L225 Difference]: With dead ends: 688 [2021-11-07 07:24:07,141 INFO L226 Difference]: Without dead ends: 688 [2021-11-07 07:24:07,141 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:24:07,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2021-11-07 07:24:07,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 637. [2021-11-07 07:24:07,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 354 states have (on average 1.9406779661016949) internal successors, (687), 626 states have internal predecessors, (687), 16 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-07 07:24:07,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 718 transitions. [2021-11-07 07:24:07,165 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 718 transitions. Word has length 9 [2021-11-07 07:24:07,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:07,166 INFO L470 AbstractCegarLoop]: Abstraction has 637 states and 718 transitions. [2021-11-07 07:24:07,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:07,166 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 718 transitions. [2021-11-07 07:24:07,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 07:24:07,167 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:07,167 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:24:07,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 07:24:07,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:24:07,390 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr322REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:24:07,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:07,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1087799300, now seen corresponding path program 1 times [2021-11-07 07:24:07,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:24:07,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2116356430] [2021-11-07 07:24:07,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:07,392 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:24:07,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:24:07,393 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:24:07,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 07:24:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:07,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 07:24:07,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:07,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:07,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:24:07,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:07,676 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:24:07,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2116356430] [2021-11-07 07:24:07,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2116356430] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:24:07,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:24:07,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 07:24:07,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850939264] [2021-11-07 07:24:07,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:24:07,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:24:07,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:24:07,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:24:07,686 INFO L87 Difference]: Start difference. First operand 637 states and 718 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:07,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:07,817 INFO L93 Difference]: Finished difference Result 1219 states and 1361 transitions. [2021-11-07 07:24:07,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:24:07,818 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 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 10 [2021-11-07 07:24:07,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:07,826 INFO L225 Difference]: With dead ends: 1219 [2021-11-07 07:24:07,827 INFO L226 Difference]: Without dead ends: 1219 [2021-11-07 07:24:07,827 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:24:07,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2021-11-07 07:24:07,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 959. [2021-11-07 07:24:07,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 676 states have (on average 1.9585798816568047) internal successors, (1324), 945 states have internal predecessors, (1324), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 07:24:07,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1361 transitions. [2021-11-07 07:24:07,871 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1361 transitions. Word has length 10 [2021-11-07 07:24:07,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:07,871 INFO L470 AbstractCegarLoop]: Abstraction has 959 states and 1361 transitions. [2021-11-07 07:24:07,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:07,872 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1361 transitions. [2021-11-07 07:24:07,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 07:24:07,872 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:07,872 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:24:07,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 07:24:08,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:24:08,084 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr4REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:24:08,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:08,085 INFO L85 PathProgramCache]: Analyzing trace with hash 548999728, now seen corresponding path program 1 times [2021-11-07 07:24:08,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:24:08,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513734126] [2021-11-07 07:24:08,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:08,087 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:24:08,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:24:08,088 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:24:08,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 07:24:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:08,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 07:24:08,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:08,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:08,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:24:08,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:08,456 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:24:08,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513734126] [2021-11-07 07:24:08,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [513734126] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:24:08,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:24:08,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 07:24:08,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655787460] [2021-11-07 07:24:08,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:24:08,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:24:08,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:24:08,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:24:08,459 INFO L87 Difference]: Start difference. First operand 959 states and 1361 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:08,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:08,508 INFO L93 Difference]: Finished difference Result 899 states and 1275 transitions. [2021-11-07 07:24:08,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:24:08,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 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 15 [2021-11-07 07:24:08,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:08,517 INFO L225 Difference]: With dead ends: 899 [2021-11-07 07:24:08,517 INFO L226 Difference]: Without dead ends: 899 [2021-11-07 07:24:08,518 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:24:08,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2021-11-07 07:24:08,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 899. [2021-11-07 07:24:08,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 640 states have (on average 1.934375) internal successors, (1238), 885 states have internal predecessors, (1238), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 07:24:08,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1275 transitions. [2021-11-07 07:24:08,553 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1275 transitions. Word has length 15 [2021-11-07 07:24:08,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:08,553 INFO L470 AbstractCegarLoop]: Abstraction has 899 states and 1275 transitions. [2021-11-07 07:24:08,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:08,554 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1275 transitions. [2021-11-07 07:24:08,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 07:24:08,555 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:08,555 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:24:08,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-07 07:24:08,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:24:08,770 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr28REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:24:08,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:08,773 INFO L85 PathProgramCache]: Analyzing trace with hash -692239478, now seen corresponding path program 1 times [2021-11-07 07:24:08,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:24:08,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2108047099] [2021-11-07 07:24:08,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:08,774 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:24:08,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:24:08,775 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:24:08,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 07:24:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:08,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:24:08,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:09,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:09,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:24:09,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:09,093 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:24:09,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2108047099] [2021-11-07 07:24:09,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2108047099] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:24:09,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:24:09,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 07:24:09,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568574464] [2021-11-07 07:24:09,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:24:09,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:24:09,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:24:09,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:24:09,095 INFO L87 Difference]: Start difference. First operand 899 states and 1275 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:09,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:09,173 INFO L93 Difference]: Finished difference Result 871 states and 1219 transitions. [2021-11-07 07:24:09,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:24:09,174 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-07 07:24:09,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:09,179 INFO L225 Difference]: With dead ends: 871 [2021-11-07 07:24:09,180 INFO L226 Difference]: Without dead ends: 871 [2021-11-07 07:24:09,180 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:24:09,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2021-11-07 07:24:09,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 869. [2021-11-07 07:24:09,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 624 states have (on average 1.891025641025641) internal successors, (1180), 855 states have internal predecessors, (1180), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 07:24:09,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1217 transitions. [2021-11-07 07:24:09,211 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1217 transitions. Word has length 17 [2021-11-07 07:24:09,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:09,212 INFO L470 AbstractCegarLoop]: Abstraction has 869 states and 1217 transitions. [2021-11-07 07:24:09,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:09,212 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1217 transitions. [2021-11-07 07:24:09,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 07:24:09,214 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:09,214 INFO L513 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] [2021-11-07 07:24:09,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 07:24:09,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:24:09,427 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr42REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:24:09,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:09,427 INFO L85 PathProgramCache]: Analyzing trace with hash 460749560, now seen corresponding path program 1 times [2021-11-07 07:24:09,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:24:09,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90445445] [2021-11-07 07:24:09,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:09,428 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:24:09,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:24:09,429 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:24:09,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 07:24:09,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:09,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:24:09,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:09,646 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 [2021-11-07 07:24:09,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:09,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:24:09,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:09,872 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:24:09,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [90445445] [2021-11-07 07:24:09,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [90445445] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:24:09,872 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:24:09,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 07:24:09,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268289553] [2021-11-07 07:24:09,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:24:09,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:24:09,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:24:09,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:24:09,875 INFO L87 Difference]: Start difference. First operand 869 states and 1217 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:11,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:11,024 INFO L93 Difference]: Finished difference Result 898 states and 1244 transitions. [2021-11-07 07:24:11,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:24:11,025 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 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 31 [2021-11-07 07:24:11,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:11,031 INFO L225 Difference]: With dead ends: 898 [2021-11-07 07:24:11,031 INFO L226 Difference]: Without dead ends: 898 [2021-11-07 07:24:11,032 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:24:11,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2021-11-07 07:24:11,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 865. [2021-11-07 07:24:11,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 624 states have (on average 1.8782051282051282) internal successors, (1172), 851 states have internal predecessors, (1172), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 07:24:11,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1209 transitions. [2021-11-07 07:24:11,066 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1209 transitions. Word has length 31 [2021-11-07 07:24:11,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:11,067 INFO L470 AbstractCegarLoop]: Abstraction has 865 states and 1209 transitions. [2021-11-07 07:24:11,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:11,067 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1209 transitions. [2021-11-07 07:24:11,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 07:24:11,068 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:11,068 INFO L513 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] [2021-11-07 07:24:11,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 07:24:11,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:24:11,280 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr43REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:24:11,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:11,281 INFO L85 PathProgramCache]: Analyzing trace with hash 460749561, now seen corresponding path program 1 times [2021-11-07 07:24:11,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:24:11,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [586542891] [2021-11-07 07:24:11,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:11,284 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:24:11,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:24:11,285 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:24:11,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 07:24:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:11,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:24:11,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:11,567 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 [2021-11-07 07:24:11,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:11,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:24:12,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:12,323 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:24:12,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [586542891] [2021-11-07 07:24:12,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [586542891] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:24:12,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:24:12,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 07:24:12,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624373476] [2021-11-07 07:24:12,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:24:12,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:24:12,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:24:12,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:24:12,325 INFO L87 Difference]: Start difference. First operand 865 states and 1209 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:16,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:16,406 INFO L93 Difference]: Finished difference Result 945 states and 1262 transitions. [2021-11-07 07:24:16,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 07:24:16,407 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 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 31 [2021-11-07 07:24:16,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:16,413 INFO L225 Difference]: With dead ends: 945 [2021-11-07 07:24:16,413 INFO L226 Difference]: Without dead ends: 945 [2021-11-07 07:24:16,413 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:24:16,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2021-11-07 07:24:16,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 861. [2021-11-07 07:24:16,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 624 states have (on average 1.8653846153846154) internal successors, (1164), 847 states have internal predecessors, (1164), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 07:24:16,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1201 transitions. [2021-11-07 07:24:16,449 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1201 transitions. Word has length 31 [2021-11-07 07:24:16,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:16,451 INFO L470 AbstractCegarLoop]: Abstraction has 861 states and 1201 transitions. [2021-11-07 07:24:16,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:16,452 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1201 transitions. [2021-11-07 07:24:16,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 07:24:16,453 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:16,454 INFO L513 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] [2021-11-07 07:24:16,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-07 07:24:16,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:24:16,672 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:24:16,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:16,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1828330934, now seen corresponding path program 1 times [2021-11-07 07:24:16,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:24:16,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56160390] [2021-11-07 07:24:16,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:16,673 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:24:16,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:24:16,675 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:24:16,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 07:24:16,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:16,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:24:16,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:17,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:17,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:24:17,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:17,271 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:24:17,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [56160390] [2021-11-07 07:24:17,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [56160390] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:24:17,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:24:17,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 07:24:17,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400818382] [2021-11-07 07:24:17,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:24:17,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:24:17,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:24:17,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:24:17,273 INFO L87 Difference]: Start difference. First operand 861 states and 1201 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:17,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:17,332 INFO L93 Difference]: Finished difference Result 849 states and 1181 transitions. [2021-11-07 07:24:17,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:24:17,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 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 46 [2021-11-07 07:24:17,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:17,339 INFO L225 Difference]: With dead ends: 849 [2021-11-07 07:24:17,339 INFO L226 Difference]: Without dead ends: 849 [2021-11-07 07:24:17,339 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:24:17,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2021-11-07 07:24:17,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 849. [2021-11-07 07:24:17,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 612 states have (on average 1.869281045751634) internal successors, (1144), 835 states have internal predecessors, (1144), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 07:24:17,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1181 transitions. [2021-11-07 07:24:17,376 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1181 transitions. Word has length 46 [2021-11-07 07:24:17,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:17,376 INFO L470 AbstractCegarLoop]: Abstraction has 849 states and 1181 transitions. [2021-11-07 07:24:17,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:17,376 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1181 transitions. [2021-11-07 07:24:17,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 07:24:17,384 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:17,384 INFO L513 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:24:17,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 07:24:17,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:24:17,597 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:24:17,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:17,598 INFO L85 PathProgramCache]: Analyzing trace with hash -850731138, now seen corresponding path program 1 times [2021-11-07 07:24:17,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:24:17,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680708661] [2021-11-07 07:24:17,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:17,599 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:24:17,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:24:17,600 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:24:17,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 07:24:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:17,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:24:17,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:18,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:18,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:24:18,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:18,798 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:24:18,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680708661] [2021-11-07 07:24:18,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [680708661] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:24:18,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:24:18,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 07:24:18,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800659583] [2021-11-07 07:24:18,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:24:18,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:24:18,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:24:18,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:24:18,800 INFO L87 Difference]: Start difference. First operand 849 states and 1181 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:18,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:18,896 INFO L93 Difference]: Finished difference Result 799 states and 1076 transitions. [2021-11-07 07:24:18,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:24:18,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 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 54 [2021-11-07 07:24:18,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:18,901 INFO L225 Difference]: With dead ends: 799 [2021-11-07 07:24:18,902 INFO L226 Difference]: Without dead ends: 799 [2021-11-07 07:24:18,902 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:24:18,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2021-11-07 07:24:18,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 799. [2021-11-07 07:24:18,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 562 states have (on average 1.8487544483985765) internal successors, (1039), 785 states have internal predecessors, (1039), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 07:24:18,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1076 transitions. [2021-11-07 07:24:18,924 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1076 transitions. Word has length 54 [2021-11-07 07:24:18,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:18,925 INFO L470 AbstractCegarLoop]: Abstraction has 799 states and 1076 transitions. [2021-11-07 07:24:18,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:18,925 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1076 transitions. [2021-11-07 07:24:18,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 07:24:18,926 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:18,927 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:24:18,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 07:24:19,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:24:19,140 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr61REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:24:19,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:19,140 INFO L85 PathProgramCache]: Analyzing trace with hash 363306019, now seen corresponding path program 1 times [2021-11-07 07:24:19,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:24:19,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715188485] [2021-11-07 07:24:19,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:19,142 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:24:19,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:24:19,143 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:24:19,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 07:24:19,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:19,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 07:24:19,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:19,689 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 [2021-11-07 07:24:19,697 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 [2021-11-07 07:24:20,423 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 07:24:20,424 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 27 treesize of output 29 [2021-11-07 07:24:20,431 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-07 07:24:20,432 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 26 treesize of output 22 [2021-11-07 07:24:20,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:20,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:24:25,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:25,181 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:24:25,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1715188485] [2021-11-07 07:24:25,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1715188485] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:24:25,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:24:25,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 07:24:25,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505256999] [2021-11-07 07:24:25,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:24:25,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:24:25,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:24:25,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-07 07:24:25,183 INFO L87 Difference]: Start difference. First operand 799 states and 1076 transitions. Second operand has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:35,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:35,005 INFO L93 Difference]: Finished difference Result 774 states and 1014 transitions. [2021-11-07 07:24:35,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 07:24:35,006 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 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 57 [2021-11-07 07:24:35,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:35,011 INFO L225 Difference]: With dead ends: 774 [2021-11-07 07:24:35,011 INFO L226 Difference]: Without dead ends: 774 [2021-11-07 07:24:35,011 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=2, NotChecked=0, Total=56 [2021-11-07 07:24:35,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-11-07 07:24:35,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 729. [2021-11-07 07:24:35,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 530 states have (on average 1.6924528301886792) internal successors, (897), 715 states have internal predecessors, (897), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 07:24:35,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 934 transitions. [2021-11-07 07:24:35,033 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 934 transitions. Word has length 57 [2021-11-07 07:24:35,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:35,033 INFO L470 AbstractCegarLoop]: Abstraction has 729 states and 934 transitions. [2021-11-07 07:24:35,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:35,034 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 934 transitions. [2021-11-07 07:24:35,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 07:24:35,034 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:35,035 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:24:35,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-07 07:24:35,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:24:35,250 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr66REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:24:35,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:35,250 INFO L85 PathProgramCache]: Analyzing trace with hash -582487087, now seen corresponding path program 1 times [2021-11-07 07:24:35,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:24:35,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [546242814] [2021-11-07 07:24:35,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:35,252 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:24:35,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:24:35,253 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:24:35,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 07:24:35,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:35,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 07:24:35,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:35,937 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 [2021-11-07 07:24:35,954 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 23 treesize of output 19 [2021-11-07 07:24:36,014 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 25 treesize of output 13 [2021-11-07 07:24:36,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:36,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:24:36,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:36,197 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:24:36,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [546242814] [2021-11-07 07:24:36,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [546242814] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:24:36,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:24:36,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 07:24:36,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354963705] [2021-11-07 07:24:36,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:24:36,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:24:36,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:24:36,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:24:36,199 INFO L87 Difference]: Start difference. First operand 729 states and 934 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:38,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:38,380 INFO L93 Difference]: Finished difference Result 728 states and 932 transitions. [2021-11-07 07:24:38,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 07:24:38,380 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 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 62 [2021-11-07 07:24:38,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:38,385 INFO L225 Difference]: With dead ends: 728 [2021-11-07 07:24:38,385 INFO L226 Difference]: Without dead ends: 728 [2021-11-07 07:24:38,385 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:24:38,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2021-11-07 07:24:38,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 728. [2021-11-07 07:24:38,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 530 states have (on average 1.6886792452830188) internal successors, (895), 714 states have internal predecessors, (895), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 07:24:38,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 932 transitions. [2021-11-07 07:24:38,405 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 932 transitions. Word has length 62 [2021-11-07 07:24:38,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:38,405 INFO L470 AbstractCegarLoop]: Abstraction has 728 states and 932 transitions. [2021-11-07 07:24:38,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:38,406 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 932 transitions. [2021-11-07 07:24:38,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 07:24:38,406 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:38,406 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:24:38,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 07:24:38,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:24:38,620 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr67REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:24:38,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:38,621 INFO L85 PathProgramCache]: Analyzing trace with hash -582487086, now seen corresponding path program 1 times [2021-11-07 07:24:38,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:24:38,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [260312115] [2021-11-07 07:24:38,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:38,622 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:24:38,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:24:38,623 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:24:38,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 07:24:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:39,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 07:24:39,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:39,226 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 [2021-11-07 07:24:39,266 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 13 treesize of output 9 [2021-11-07 07:24:39,278 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 19 treesize of output 15 [2021-11-07 07:24:39,397 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 39 treesize of output 27 [2021-11-07 07:24:39,402 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 [2021-11-07 07:24:39,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:39,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:24:39,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:39,779 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:24:39,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [260312115] [2021-11-07 07:24:39,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [260312115] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:24:39,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:24:39,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-07 07:24:39,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703097806] [2021-11-07 07:24:39,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 07:24:39,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:24:39,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 07:24:39,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:24:39,780 INFO L87 Difference]: Start difference. First operand 728 states and 932 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:45,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:45,060 INFO L93 Difference]: Finished difference Result 727 states and 930 transitions. [2021-11-07 07:24:45,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 07:24:45,061 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 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 62 [2021-11-07 07:24:45,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:45,064 INFO L225 Difference]: With dead ends: 727 [2021-11-07 07:24:45,065 INFO L226 Difference]: Without dead ends: 727 [2021-11-07 07:24:45,065 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:24:45,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2021-11-07 07:24:45,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2021-11-07 07:24:45,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 528 states have (on average 1.691287878787879) internal successors, (893), 713 states have internal predecessors, (893), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-07 07:24:45,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 930 transitions. [2021-11-07 07:24:45,103 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 930 transitions. Word has length 62 [2021-11-07 07:24:45,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:45,104 INFO L470 AbstractCegarLoop]: Abstraction has 727 states and 930 transitions. [2021-11-07 07:24:45,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:24:45,105 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 930 transitions. [2021-11-07 07:24:45,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 07:24:45,106 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:45,106 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:24:45,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 07:24:45,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:24:45,319 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:24:45,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:45,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1992122424, now seen corresponding path program 1 times [2021-11-07 07:24:45,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:24:45,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [493941713] [2021-11-07 07:24:45,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:45,321 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:24:45,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:24:45,322 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:24:45,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 07:24:45,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:45,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:24:45,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:46,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:46,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:24:46,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:46,205 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:24:46,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [493941713] [2021-11-07 07:24:46,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [493941713] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:24:46,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:24:46,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 07:24:46,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796190453] [2021-11-07 07:24:46,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:24:46,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:24:46,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:24:46,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:24:46,207 INFO L87 Difference]: Start difference. First operand 727 states and 930 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 07:24:46,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:46,314 INFO L93 Difference]: Finished difference Result 737 states and 944 transitions. [2021-11-07 07:24:46,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 07:24:46,316 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 70 [2021-11-07 07:24:46,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:46,322 INFO L225 Difference]: With dead ends: 737 [2021-11-07 07:24:46,322 INFO L226 Difference]: Without dead ends: 737 [2021-11-07 07:24:46,322 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:24:46,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2021-11-07 07:24:46,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 737. [2021-11-07 07:24:46,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 536 states have (on average 1.6884328358208955) internal successors, (905), 722 states have internal predecessors, (905), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (20), 9 states have call predecessors, (20), 18 states have call successors, (20) [2021-11-07 07:24:46,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 944 transitions. [2021-11-07 07:24:46,344 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 944 transitions. Word has length 70 [2021-11-07 07:24:46,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:46,345 INFO L470 AbstractCegarLoop]: Abstraction has 737 states and 944 transitions. [2021-11-07 07:24:46,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 07:24:46,345 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 944 transitions. [2021-11-07 07:24:46,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 07:24:46,346 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:46,346 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:24:46,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 07:24:46,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:24:46,563 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:24:46,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:46,564 INFO L85 PathProgramCache]: Analyzing trace with hash -616502664, now seen corresponding path program 1 times [2021-11-07 07:24:46,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:24:46,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262465458] [2021-11-07 07:24:46,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:46,564 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:24:46,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:24:46,565 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:24:46,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 07:24:47,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:47,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:24:47,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:47,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:47,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:24:47,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:47,696 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:24:47,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1262465458] [2021-11-07 07:24:47,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1262465458] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 07:24:47,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:24:47,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-07 07:24:47,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460364849] [2021-11-07 07:24:47,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 07:24:47,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:24:47,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 07:24:47,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:24:47,699 INFO L87 Difference]: Start difference. First operand 737 states and 944 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 07:24:48,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:48,202 INFO L93 Difference]: Finished difference Result 751 states and 964 transitions. [2021-11-07 07:24:48,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 07:24:48,203 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 72 [2021-11-07 07:24:48,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:48,207 INFO L225 Difference]: With dead ends: 751 [2021-11-07 07:24:48,207 INFO L226 Difference]: Without dead ends: 747 [2021-11-07 07:24:48,208 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-07 07:24:48,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2021-11-07 07:24:48,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 743. [2021-11-07 07:24:48,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 542 states have (on average 1.6845018450184501) internal successors, (913), 728 states have internal predecessors, (913), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (20), 9 states have call predecessors, (20), 18 states have call successors, (20) [2021-11-07 07:24:48,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 952 transitions. [2021-11-07 07:24:48,233 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 952 transitions. Word has length 72 [2021-11-07 07:24:48,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:48,234 INFO L470 AbstractCegarLoop]: Abstraction has 743 states and 952 transitions. [2021-11-07 07:24:48,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 07:24:48,234 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 952 transitions. [2021-11-07 07:24:48,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 07:24:48,235 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:48,235 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:24:48,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 07:24:48,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:24:48,449 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:24:48,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:48,450 INFO L85 PathProgramCache]: Analyzing trace with hash 876564216, now seen corresponding path program 2 times [2021-11-07 07:24:48,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:24:48,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1103067584] [2021-11-07 07:24:48,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:24:48,451 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:24:48,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:24:48,452 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:24:48,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 07:24:49,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:24:49,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:24:49,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 07:24:49,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:49,590 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:49,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:24:50,173 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:50,174 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:24:50,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1103067584] [2021-11-07 07:24:50,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1103067584] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 07:24:50,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:24:50,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-07 07:24:50,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982631921] [2021-11-07 07:24:50,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 07:24:50,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:24:50,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 07:24:50,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-07 07:24:50,176 INFO L87 Difference]: Start difference. First operand 743 states and 952 transitions. Second operand has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 07:24:51,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:51,949 INFO L93 Difference]: Finished difference Result 771 states and 996 transitions. [2021-11-07 07:24:51,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-07 07:24:51,951 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 76 [2021-11-07 07:24:51,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:51,957 INFO L225 Difference]: With dead ends: 771 [2021-11-07 07:24:51,957 INFO L226 Difference]: Without dead ends: 767 [2021-11-07 07:24:51,958 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-07 07:24:51,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2021-11-07 07:24:51,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 755. [2021-11-07 07:24:51,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 554 states have (on average 1.6768953068592058) internal successors, (929), 740 states have internal predecessors, (929), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (20), 9 states have call predecessors, (20), 18 states have call successors, (20) [2021-11-07 07:24:51,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 968 transitions. [2021-11-07 07:24:51,986 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 968 transitions. Word has length 76 [2021-11-07 07:24:51,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:51,986 INFO L470 AbstractCegarLoop]: Abstraction has 755 states and 968 transitions. [2021-11-07 07:24:51,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 07:24:51,987 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 968 transitions. [2021-11-07 07:24:51,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-07 07:24:51,988 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:51,988 INFO L513 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:24:52,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 07:24:52,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:24:52,205 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:24:52,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:52,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1089906696, now seen corresponding path program 3 times [2021-11-07 07:24:52,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:24:52,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [134102911] [2021-11-07 07:24:52,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:24:52,206 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:24:52,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:24:52,207 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:24:52,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 07:24:53,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-07 07:24:53,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:24:53,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 07:24:53,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:54,312 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:54,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:24:56,685 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:56,685 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:24:56,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [134102911] [2021-11-07 07:24:56,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [134102911] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 07:24:56,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:24:56,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-07 07:24:56,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944324806] [2021-11-07 07:24:56,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-07 07:24:56,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:24:56,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-07 07:24:56,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 07:24:56,688 INFO L87 Difference]: Start difference. First operand 755 states and 968 transitions. Second operand has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 07:25:06,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:25:06,519 INFO L93 Difference]: Finished difference Result 811 states and 1072 transitions. [2021-11-07 07:25:06,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-07 07:25:06,520 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 84 [2021-11-07 07:25:06,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:25:06,525 INFO L225 Difference]: With dead ends: 811 [2021-11-07 07:25:06,525 INFO L226 Difference]: Without dead ends: 805 [2021-11-07 07:25:06,527 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-07 07:25:06,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2021-11-07 07:25:06,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 779. [2021-11-07 07:25:06,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 578 states have (on average 1.6608996539792387) internal successors, (960), 764 states have internal predecessors, (960), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (20), 9 states have call predecessors, (20), 18 states have call successors, (20) [2021-11-07 07:25:06,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 999 transitions. [2021-11-07 07:25:06,557 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 999 transitions. Word has length 84 [2021-11-07 07:25:06,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:25:06,557 INFO L470 AbstractCegarLoop]: Abstraction has 779 states and 999 transitions. [2021-11-07 07:25:06,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 07:25:06,558 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 999 transitions. [2021-11-07 07:25:06,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-07 07:25:06,559 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:25:06,559 INFO L513 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:25:06,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-07 07:25:06,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:25:06,778 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:25:06,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:25:06,779 INFO L85 PathProgramCache]: Analyzing trace with hash -145593864, now seen corresponding path program 4 times [2021-11-07 07:25:06,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:25:06,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1038504625] [2021-11-07 07:25:06,780 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:25:06,780 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:25:06,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:25:06,782 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:25:06,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 07:25:07,843 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:25:07,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:25:07,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-07 07:25:07,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:25:09,438 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:09,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:25:13,938 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:13,938 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:25:13,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1038504625] [2021-11-07 07:25:13,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1038504625] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 07:25:13,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:25:13,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-07 07:25:13,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664368409] [2021-11-07 07:25:13,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-07 07:25:13,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:25:13,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-07 07:25:13,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-07 07:25:13,943 INFO L87 Difference]: Start difference. First operand 779 states and 999 transitions. Second operand has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 07:25:30,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:25:30,181 INFO L93 Difference]: Finished difference Result 871 states and 1148 transitions. [2021-11-07 07:25:30,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-07 07:25:30,182 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 100 [2021-11-07 07:25:30,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:25:30,188 INFO L225 Difference]: With dead ends: 871 [2021-11-07 07:25:30,188 INFO L226 Difference]: Without dead ends: 867 [2021-11-07 07:25:30,194 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-07 07:25:30,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2021-11-07 07:25:30,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 809. [2021-11-07 07:25:30,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 608 states have (on average 1.6546052631578947) internal successors, (1006), 794 states have internal predecessors, (1006), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (20), 9 states have call predecessors, (20), 18 states have call successors, (20) [2021-11-07 07:25:30,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1045 transitions. [2021-11-07 07:25:30,223 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1045 transitions. Word has length 100 [2021-11-07 07:25:30,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:25:30,223 INFO L470 AbstractCegarLoop]: Abstraction has 809 states and 1045 transitions. [2021-11-07 07:25:30,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 07:25:30,224 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1045 transitions. [2021-11-07 07:25:30,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-07 07:25:30,225 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:25:30,225 INFO L513 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:25:30,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-07 07:25:30,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:25:30,441 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-07 07:25:30,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:25:30,441 INFO L85 PathProgramCache]: Analyzing trace with hash 841634232, now seen corresponding path program 5 times [2021-11-07 07:25:30,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:25:30,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1619463837] [2021-11-07 07:25:30,442 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:25:30,442 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:25:30,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:25:30,443 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:25:30,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 07:25:32,164 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-07 07:25:32,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:25:32,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-07 07:25:32,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:25:32,220 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 [2021-11-07 07:25:32,517 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-07 07:25:32,517 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 20 treesize of output 27 [2021-11-07 07:25:32,585 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 27 treesize of output 23 [2021-11-07 07:25:32,832 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 42 treesize of output 30 [2021-11-07 07:35:38,936 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_#Ultimate.C_memset_#t~loopctr145_183| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr145_194| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr145_184| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr145_195| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr145_185| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr145_196| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr145_186| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr145_190| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr145_191| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr145_181| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr145_192| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr145_182| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr145_193| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr145_187| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr145_188| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr145_189| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr145_181|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr145_182|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr145_183|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr145_184|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr145_185|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr145_186|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr145_187|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr145_188|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr145_189|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr145_190|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr145_191|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr145_192|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr145_193|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr145_194|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr145_195|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr145_196|) (_ bv0 32))) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_7 (_ BitVec 1)) (v_arrayElimCell_9 (_ BitVec 32)) (v_main_~user~0.base_BEFORE_CALL_1 (_ BitVec 32))) (let ((.cse0 (bvneg v_arrayElimCell_7))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| v_arrayElimCell_9))) (_ bv1 1))) (= (_ bv0 1) (bvadd .cse0 (_ bv1 1))) (= (_ bv0 1) (bvadd (bvneg .cse0) (bvneg (select |c_#valid| v_main_~user~0.base_BEFORE_CALL_1)))) (not (= v_arrayElimCell_9 v_main_~user~0.base_BEFORE_CALL_1)))))) is different from false [2021-11-07 07:37:43,303 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-07 07:37:43,304 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:37:43,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1619463837] [2021-11-07 07:37:43,305 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-07 07:37:43,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1921582284] [2021-11-07 07:37:43,305 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:37:43,305 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 07:37:43,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/cvc4 [2021-11-07 07:37:43,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-11-07 07:37:43,306 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 07:37:43,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ac98cd-7df6-4ed5-a3e5-9bb52b0c4d07/bin/uautomizer-AkOaLMaTGY/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process