./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF --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 b04cfdc033f25419ae30b8c067b1e8de34cd963e91f12bceeafd05a3d125e0b7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:51:07,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:51:07,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:51:07,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:51:07,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:51:07,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:51:07,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:51:07,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:51:07,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:51:07,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:51:07,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:51:07,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:51:07,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:51:07,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:51:07,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:51:08,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:51:08,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:51:08,005 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:51:08,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:51:08,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:51:08,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:51:08,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:51:08,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:51:08,031 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:51:08,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:51:08,043 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:51:08,043 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:51:08,046 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:51:08,047 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:51:08,049 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:51:08,050 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:51:08,052 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:51:08,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:51:08,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:51:08,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:51:08,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:51:08,059 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:51:08,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:51:08,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:51:08,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:51:08,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:51:08,063 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-20 05:51:08,111 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:51:08,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:51:08,113 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:51:08,113 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:51:08,114 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:51:08,115 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:51:08,115 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:51:08,116 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:51:08,116 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:51:08,116 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:51:08,117 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:51:08,118 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 05:51:08,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:51:08,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:51:08,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:51:08,119 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 05:51:08,119 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 05:51:08,119 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 05:51:08,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:51:08,120 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 05:51:08,120 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:51:08,120 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:51:08,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:51:08,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:51:08,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:51:08,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:51:08,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:51:08,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:51:08,122 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:51:08,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:51:08,124 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:51:08,125 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_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b04cfdc033f25419ae30b8c067b1e8de34cd963e91f12bceeafd05a3d125e0b7 [2021-11-20 05:51:08,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:51:08,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:51:08,483 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:51:08,484 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:51:08,485 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:51:08,487 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_3.i [2021-11-20 05:51:08,571 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/data/c21fd2104/02d5e0efa4b34c41837f98c83b39b0c4/FLAG13eb31a92 [2021-11-20 05:51:09,321 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:51:09,325 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/sv-benchmarks/c/ldv-memsafety/memleaks_test23_3.i [2021-11-20 05:51:09,351 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/data/c21fd2104/02d5e0efa4b34c41837f98c83b39b0c4/FLAG13eb31a92 [2021-11-20 05:51:09,557 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/data/c21fd2104/02d5e0efa4b34c41837f98c83b39b0c4 [2021-11-20 05:51:09,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:51:09,562 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:51:09,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:51:09,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:51:09,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:51:09,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:51:09" (1/1) ... [2021-11-20 05:51:09,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f3dabb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:09, skipping insertion in model container [2021-11-20 05:51:09,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:51:09" (1/1) ... [2021-11-20 05:51:09,586 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:51:09,644 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:51:10,100 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:51:10,121 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) [2021-11-20 05:51:10,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@78d9d2de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:10, skipping insertion in model container [2021-11-20 05:51:10,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:51:10,123 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-20 05:51:10,125 INFO L158 Benchmark]: Toolchain (without parser) took 562.10ms. Allocated memory is still 119.5MB. Free memory was 89.4MB in the beginning and 89.5MB in the end (delta: -99.6kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 05:51:10,126 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 119.5MB. Free memory is still 73.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:51:10,127 INFO L158 Benchmark]: CACSL2BoogieTranslator took 558.89ms. Allocated memory is still 119.5MB. Free memory was 89.4MB in the beginning and 89.5MB in the end (delta: -99.6kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 05:51:10,128 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 119.5MB. Free memory is still 73.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 558.89ms. Allocated memory is still 119.5MB. Free memory was 89.4MB in the beginning and 89.5MB in the end (delta: -99.6kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF --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 b04cfdc033f25419ae30b8c067b1e8de34cd963e91f12bceeafd05a3d125e0b7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:51:12,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:51:12,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:51:12,573 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:51:12,574 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:51:12,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:51:12,578 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:51:12,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:51:12,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:51:12,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:51:12,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:51:12,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:51:12,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:51:12,590 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:51:12,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:51:12,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:51:12,595 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:51:12,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:51:12,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:51:12,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:51:12,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:51:12,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:51:12,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:51:12,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:51:12,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:51:12,613 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:51:12,614 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:51:12,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:51:12,616 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:51:12,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:51:12,618 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:51:12,619 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:51:12,620 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:51:12,621 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:51:12,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:51:12,623 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:51:12,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:51:12,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:51:12,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:51:12,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:51:12,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:51:12,631 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-20 05:51:12,676 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:51:12,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:51:12,677 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:51:12,677 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:51:12,678 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:51:12,679 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:51:12,680 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:51:12,681 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:51:12,681 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:51:12,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:51:12,682 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:51:12,683 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 05:51:12,683 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:51:12,683 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:51:12,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:51:12,684 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 05:51:12,685 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 05:51:12,685 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 05:51:12,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:51:12,685 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 05:51:12,686 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 05:51:12,686 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 05:51:12,686 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:51:12,687 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:51:12,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:51:12,687 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:51:12,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:51:12,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:51:12,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:51:12,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:51:12,689 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 05:51:12,689 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 05:51:12,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:51:12,690 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 05:51:12,690 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_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b04cfdc033f25419ae30b8c067b1e8de34cd963e91f12bceeafd05a3d125e0b7 [2021-11-20 05:51:13,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:51:13,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:51:13,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:51:13,130 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:51:13,131 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:51:13,132 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_3.i [2021-11-20 05:51:13,221 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/data/fb48e2a22/1693dfd90f9a482f943a7abd9cf1ec22/FLAG174c23f21 [2021-11-20 05:51:13,924 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:51:13,924 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/sv-benchmarks/c/ldv-memsafety/memleaks_test23_3.i [2021-11-20 05:51:13,944 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/data/fb48e2a22/1693dfd90f9a482f943a7abd9cf1ec22/FLAG174c23f21 [2021-11-20 05:51:14,076 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/data/fb48e2a22/1693dfd90f9a482f943a7abd9cf1ec22 [2021-11-20 05:51:14,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:51:14,079 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:51:14,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:51:14,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:51:14,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:51:14,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:51:14" (1/1) ... [2021-11-20 05:51:14,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fca0d35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:14, skipping insertion in model container [2021-11-20 05:51:14,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:51:14" (1/1) ... [2021-11-20 05:51:14,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:51:14,182 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:51:14,655 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:51:14,673 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-20 05:51:14,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:51:14,749 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:51:14,758 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:51:14,830 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:51:14,896 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:51:14,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:14 WrapperNode [2021-11-20 05:51:14,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:51:14,898 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:51:14,899 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:51:14,899 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:51:14,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:14" (1/1) ... [2021-11-20 05:51:14,931 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:14" (1/1) ... [2021-11-20 05:51:14,962 INFO L137 Inliner]: procedures = 174, calls = 117, calls flagged for inlining = 29, calls inlined = 14, statements flattened = 187 [2021-11-20 05:51:14,962 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:51:14,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:51:14,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:51:14,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:51:14,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:14" (1/1) ... [2021-11-20 05:51:14,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:14" (1/1) ... [2021-11-20 05:51:14,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:14" (1/1) ... [2021-11-20 05:51:14,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:14" (1/1) ... [2021-11-20 05:51:14,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:14" (1/1) ... [2021-11-20 05:51:14,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:14" (1/1) ... [2021-11-20 05:51:15,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:14" (1/1) ... [2021-11-20 05:51:15,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:51:15,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:51:15,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:51:15,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:51:15,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:14" (1/1) ... [2021-11-20 05:51:15,049 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:51:15,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:51:15,075 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:51:15,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:51:15,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-20 05:51:15,118 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-11-20 05:51:15,118 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-11-20 05:51:15,118 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-11-20 05:51:15,118 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-11-20 05:51:15,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 05:51:15,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 05:51:15,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 05:51:15,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:51:15,121 INFO L130 BoogieDeclarations]: Found specification of procedure free_reports [2021-11-20 05:51:15,121 INFO L138 BoogieDeclarations]: Found implementation of procedure free_reports [2021-11-20 05:51:15,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 05:51:15,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 05:51:15,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 05:51:15,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-20 05:51:15,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 05:51:15,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 05:51:15,122 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-11-20 05:51:15,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-11-20 05:51:15,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-20 05:51:15,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-20 05:51:15,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:51:15,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:51:15,308 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:51:15,310 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:51:16,200 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:51:16,210 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:51:16,210 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 05:51:16,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:51:16 BoogieIcfgContainer [2021-11-20 05:51:16,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:51:16,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:51:16,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:51:16,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:51:16,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:51:14" (1/3) ... [2021-11-20 05:51:16,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc7e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:51:16, skipping insertion in model container [2021-11-20 05:51:16,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:14" (2/3) ... [2021-11-20 05:51:16,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc7e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:51:16, skipping insertion in model container [2021-11-20 05:51:16,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:51:16" (3/3) ... [2021-11-20 05:51:16,224 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test23_3.i [2021-11-20 05:51:16,233 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:51:16,234 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 76 error locations. [2021-11-20 05:51:16,301 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:51:16,318 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 [2021-11-20 05:51:16,322 INFO L340 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2021-11-20 05:51:16,352 INFO L276 IsEmpty]: Start isEmpty. Operand has 199 states, 108 states have (on average 1.8425925925925926) internal successors, (199), 184 states have internal predecessors, (199), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 05:51:16,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 05:51:16,375 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:16,376 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:16,377 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-20 05:51:16,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:16,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1617164409, now seen corresponding path program 1 times [2021-11-20 05:51:16,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:51:16,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1282407910] [2021-11-20 05:51:16,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:16,400 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:51:16,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:51:16,405 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:51:16,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 05:51:16,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:16,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 05:51:16,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:16,657 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 [2021-11-20 05:51:16,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:16,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:16,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:16,895 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:51:16,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1282407910] [2021-11-20 05:51:16,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1282407910] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:51:16,896 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:51:16,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-20 05:51:16,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380047355] [2021-11-20 05:51:16,898 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:51:16,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:51:16,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:51:16,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:51:16,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:51:16,934 INFO L87 Difference]: Start difference. First operand has 199 states, 108 states have (on average 1.8425925925925926) internal successors, (199), 184 states have internal predecessors, (199), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:51:18,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:18,052 INFO L93 Difference]: Finished difference Result 226 states and 243 transitions. [2021-11-20 05:51:18,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 05:51:18,055 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-20 05:51:18,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:18,069 INFO L225 Difference]: With dead ends: 226 [2021-11-20 05:51:18,069 INFO L226 Difference]: Without dead ends: 222 [2021-11-20 05:51:18,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:51:18,075 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 28 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:18,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 825 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 05:51:18,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-11-20 05:51:18,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 206. [2021-11-20 05:51:18,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 114 states have (on average 1.7894736842105263) internal successors, (204), 189 states have internal predecessors, (204), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2021-11-20 05:51:18,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 223 transitions. [2021-11-20 05:51:18,138 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 223 transitions. Word has length 12 [2021-11-20 05:51:18,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:18,138 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 223 transitions. [2021-11-20 05:51:18,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:51:18,139 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 223 transitions. [2021-11-20 05:51:18,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 05:51:18,140 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:18,140 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:18,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-20 05:51:18,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:51:18,353 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-20 05:51:18,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:18,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1617164410, now seen corresponding path program 1 times [2021-11-20 05:51:18,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:51:18,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [553893938] [2021-11-20 05:51:18,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:18,355 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:51:18,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:51:18,357 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:51:18,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 05:51:18,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:18,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-20 05:51:18,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:18,464 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 [2021-11-20 05:51:18,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:18,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:19,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:19,252 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:51:19,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [553893938] [2021-11-20 05:51:19,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [553893938] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:51:19,253 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:51:19,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-11-20 05:51:19,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930718320] [2021-11-20 05:51:19,253 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:51:19,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 05:51:19,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:51:19,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 05:51:19,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-20 05:51:19,256 INFO L87 Difference]: Start difference. First operand 206 states and 223 transitions. Second operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 10 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:51:21,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:21,529 INFO L93 Difference]: Finished difference Result 232 states and 249 transitions. [2021-11-20 05:51:21,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 05:51:21,531 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 10 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 12 [2021-11-20 05:51:21,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:21,534 INFO L225 Difference]: With dead ends: 232 [2021-11-20 05:51:21,534 INFO L226 Difference]: Without dead ends: 232 [2021-11-20 05:51:21,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-20 05:51:21,537 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 42 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 1660 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:21,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 1660 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 05:51:21,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-11-20 05:51:21,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 206. [2021-11-20 05:51:21,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 114 states have (on average 1.7719298245614035) internal successors, (202), 189 states have internal predecessors, (202), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2021-11-20 05:51:21,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 221 transitions. [2021-11-20 05:51:21,558 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 221 transitions. Word has length 12 [2021-11-20 05:51:21,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:21,558 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 221 transitions. [2021-11-20 05:51:21,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 10 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:51:21,559 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 221 transitions. [2021-11-20 05:51:21,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 05:51:21,560 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:21,560 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:21,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-20 05:51:21,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:51:21,770 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-20 05:51:21,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:21,771 INFO L85 PathProgramCache]: Analyzing trace with hash -934992552, now seen corresponding path program 1 times [2021-11-20 05:51:21,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:51:21,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1790236155] [2021-11-20 05:51:21,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:21,772 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:51:21,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:51:21,774 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:51:21,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 05:51:21,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:21,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 05:51:21,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:21,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:21,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:22,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:22,040 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:51:22,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1790236155] [2021-11-20 05:51:22,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1790236155] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:51:22,041 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:51:22,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 05:51:22,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704627485] [2021-11-20 05:51:22,042 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:51:22,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:51:22,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:51:22,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:51:22,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:51:22,043 INFO L87 Difference]: Start difference. First operand 206 states and 221 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:51:22,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:22,080 INFO L93 Difference]: Finished difference Result 218 states and 233 transitions. [2021-11-20 05:51:22,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:51:22,082 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-20 05:51:22,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:22,085 INFO L225 Difference]: With dead ends: 218 [2021-11-20 05:51:22,085 INFO L226 Difference]: Without dead ends: 218 [2021-11-20 05:51:22,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:51:22,087 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 20 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:22,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 822 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:51:22,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-11-20 05:51:22,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 197. [2021-11-20 05:51:22,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 110 states have (on average 1.7636363636363637) internal successors, (194), 181 states have internal predecessors, (194), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-20 05:51:22,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 211 transitions. [2021-11-20 05:51:22,105 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 211 transitions. Word has length 12 [2021-11-20 05:51:22,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:22,105 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 211 transitions. [2021-11-20 05:51:22,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:51:22,106 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 211 transitions. [2021-11-20 05:51:22,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 05:51:22,107 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:22,107 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:22,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:22,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:51:22,318 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-20 05:51:22,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:22,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1617078937, now seen corresponding path program 1 times [2021-11-20 05:51:22,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:51:22,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968827194] [2021-11-20 05:51:22,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:22,320 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:51:22,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:51:22,321 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:51:22,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 05:51:22,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:22,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:51:22,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:22,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:22,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:22,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:22,481 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:51:22,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968827194] [2021-11-20 05:51:22,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968827194] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:51:22,482 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:51:22,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 05:51:22,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908523053] [2021-11-20 05:51:22,482 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:51:22,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:51:22,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:51:22,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:51:22,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:51:22,484 INFO L87 Difference]: Start difference. First operand 197 states and 211 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:51:22,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:22,533 INFO L93 Difference]: Finished difference Result 218 states and 232 transitions. [2021-11-20 05:51:22,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:51:22,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-20 05:51:22,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:22,535 INFO L225 Difference]: With dead ends: 218 [2021-11-20 05:51:22,536 INFO L226 Difference]: Without dead ends: 218 [2021-11-20 05:51:22,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:51:22,537 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 123 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:22,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 760 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:51:22,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-11-20 05:51:22,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 197. [2021-11-20 05:51:22,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 110 states have (on average 1.7545454545454546) internal successors, (193), 181 states have internal predecessors, (193), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-20 05:51:22,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 210 transitions. [2021-11-20 05:51:22,551 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 210 transitions. Word has length 12 [2021-11-20 05:51:22,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:22,552 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 210 transitions. [2021-11-20 05:51:22,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:51:22,552 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 210 transitions. [2021-11-20 05:51:22,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 05:51:22,553 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:22,553 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:22,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:22,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:51:22,764 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-20 05:51:22,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:22,765 INFO L85 PathProgramCache]: Analyzing trace with hash -935078024, now seen corresponding path program 1 times [2021-11-20 05:51:22,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:51:22,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363684729] [2021-11-20 05:51:22,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:22,766 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:51:22,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:51:22,767 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:51:22,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 05:51:22,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:22,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:51:22,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:22,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:22,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:22,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:22,935 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:51:22,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [363684729] [2021-11-20 05:51:22,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [363684729] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:51:22,936 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:51:22,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-20 05:51:22,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406078852] [2021-11-20 05:51:22,936 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:51:22,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 05:51:22,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:51:22,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 05:51:22,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:51:22,938 INFO L87 Difference]: Start difference. First operand 197 states and 210 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:51:23,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:23,013 INFO L93 Difference]: Finished difference Result 210 states and 220 transitions. [2021-11-20 05:51:23,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:51:23,014 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 12 [2021-11-20 05:51:23,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:23,015 INFO L225 Difference]: With dead ends: 210 [2021-11-20 05:51:23,016 INFO L226 Difference]: Without dead ends: 210 [2021-11-20 05:51:23,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:51:23,024 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 129 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:23,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 809 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:51:23,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-20 05:51:23,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 199. [2021-11-20 05:51:23,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 112 states have (on average 1.7410714285714286) internal successors, (195), 183 states have internal predecessors, (195), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-20 05:51:23,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 212 transitions. [2021-11-20 05:51:23,051 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 212 transitions. Word has length 12 [2021-11-20 05:51:23,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:23,051 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 212 transitions. [2021-11-20 05:51:23,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:51:23,052 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 212 transitions. [2021-11-20 05:51:23,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 05:51:23,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:23,053 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:23,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:23,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:51:23,273 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-20 05:51:23,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:23,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1077372438, now seen corresponding path program 1 times [2021-11-20 05:51:23,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:51:23,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366507646] [2021-11-20 05:51:23,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:23,276 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:51:23,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:51:23,277 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:51:23,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 05:51:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:23,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:51:23,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:23,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:23,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:23,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:23,443 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:51:23,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366507646] [2021-11-20 05:51:23,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1366507646] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:51:23,443 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:51:23,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 05:51:23,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647936778] [2021-11-20 05:51:23,444 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:51:23,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:51:23,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:51:23,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:51:23,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:51:23,445 INFO L87 Difference]: Start difference. First operand 199 states and 212 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:51:23,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:23,881 INFO L93 Difference]: Finished difference Result 213 states and 228 transitions. [2021-11-20 05:51:23,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:51:23,881 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-11-20 05:51:23,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:23,883 INFO L225 Difference]: With dead ends: 213 [2021-11-20 05:51:23,884 INFO L226 Difference]: Without dead ends: 205 [2021-11-20 05:51:23,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:51:23,885 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 51 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:23,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 388 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 05:51:23,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-11-20 05:51:23,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 195. [2021-11-20 05:51:23,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 109 states have (on average 1.7522935779816513) internal successors, (191), 180 states have internal predecessors, (191), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 05:51:23,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 207 transitions. [2021-11-20 05:51:23,894 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 207 transitions. Word has length 13 [2021-11-20 05:51:23,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:23,895 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 207 transitions. [2021-11-20 05:51:23,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:51:23,895 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 207 transitions. [2021-11-20 05:51:23,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 05:51:23,896 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:23,896 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:23,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:24,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:51:24,108 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-20 05:51:24,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:24,108 INFO L85 PathProgramCache]: Analyzing trace with hash 609549957, now seen corresponding path program 1 times [2021-11-20 05:51:24,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:51:24,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1942305973] [2021-11-20 05:51:24,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:24,109 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:51:24,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:51:24,110 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:51:24,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 05:51:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:24,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-20 05:51:24,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:26,433 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 05:51:26,433 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 30 treesize of output 32 [2021-11-20 05:51:26,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:26,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:31,197 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_probe_23_~dev#1.base_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_probe_23_~dev#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ldv_malloc_#res.base_29| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ldv_malloc_#res.base_29|))) (exists ((|v_ldv_malloc_#res.base_28| (_ BitVec 32))) (and (or (exists ((v_ldv_malloc_~size_25 (_ BitVec 32))) (not (bvule (bvadd |v_ULTIMATE.start_probe_23_~dev#1.offset_BEFORE_CALL_4| (_ bv4 32)) (select (store |c_old(#length)| |v_ldv_malloc_#res.base_28| v_ldv_malloc_~size_25) |v_ULTIMATE.start_probe_23_~dev#1.base_BEFORE_CALL_4|)))) (not (bvule |v_ULTIMATE.start_probe_23_~dev#1.offset_BEFORE_CALL_4| (bvadd |v_ULTIMATE.start_probe_23_~dev#1.offset_BEFORE_CALL_4| (_ bv4 32))))) (= (_ bv0 1) (bvneg (select |c_old(#valid)| |v_ldv_malloc_#res.base_28|))))) (and (forall ((ldv_malloc_~size (_ BitVec 32))) (bvule (bvadd |v_ULTIMATE.start_probe_23_~dev#1.offset_BEFORE_CALL_4| (_ bv4 32)) (select (store |c_#length| |v_ldv_malloc_#res.base_29| ldv_malloc_~size) |v_ULTIMATE.start_probe_23_~dev#1.base_BEFORE_CALL_4|))) (bvule |v_ULTIMATE.start_probe_23_~dev#1.offset_BEFORE_CALL_4| (bvadd |v_ULTIMATE.start_probe_23_~dev#1.offset_BEFORE_CALL_4| (_ bv4 32)))))) is different from true [2021-11-20 05:51:32,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:32,296 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:51:32,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1942305973] [2021-11-20 05:51:32,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1942305973] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:51:32,296 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:51:32,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-11-20 05:51:32,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17147310] [2021-11-20 05:51:32,297 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:51:32,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 05:51:32,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:51:32,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 05:51:32,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=102, Unknown=2, NotChecked=20, Total=156 [2021-11-20 05:51:32,298 INFO L87 Difference]: Start difference. First operand 195 states and 207 transitions. Second operand has 13 states, 10 states have (on average 2.4) internal successors, (24), 13 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 05:51:44,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:44,174 INFO L93 Difference]: Finished difference Result 205 states and 220 transitions. [2021-11-20 05:51:44,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:51:44,174 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 2.4) internal successors, (24), 13 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 16 [2021-11-20 05:51:44,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:44,177 INFO L225 Difference]: With dead ends: 205 [2021-11-20 05:51:44,177 INFO L226 Difference]: Without dead ends: 205 [2021-11-20 05:51:44,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=45, Invalid=136, Unknown=5, NotChecked=24, Total=210 [2021-11-20 05:51:44,178 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 61 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 598 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:44,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 685 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 326 Invalid, 0 Unknown, 598 Unchecked, 1.4s Time] [2021-11-20 05:51:44,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-11-20 05:51:44,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 194. [2021-11-20 05:51:44,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 109 states have (on average 1.7431192660550459) internal successors, (190), 179 states have internal predecessors, (190), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 05:51:44,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 206 transitions. [2021-11-20 05:51:44,189 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 206 transitions. Word has length 16 [2021-11-20 05:51:44,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:44,189 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 206 transitions. [2021-11-20 05:51:44,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 2.4) internal successors, (24), 13 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 05:51:44,190 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 206 transitions. [2021-11-20 05:51:44,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 05:51:44,191 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:44,191 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:44,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:44,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:51:44,406 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-20 05:51:44,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:44,407 INFO L85 PathProgramCache]: Analyzing trace with hash 609549956, now seen corresponding path program 1 times [2021-11-20 05:51:44,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:51:44,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [117053867] [2021-11-20 05:51:44,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:44,408 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:51:44,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:51:44,409 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:51:44,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 05:51:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:44,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 05:51:44,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:44,668 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 05:51:44,669 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 27 treesize of output 34 [2021-11-20 05:51:45,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:45,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:53,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:53,611 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:51:53,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [117053867] [2021-11-20 05:51:53,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [117053867] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:51:53,611 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:51:53,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-11-20 05:51:53,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913966034] [2021-11-20 05:51:53,612 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:51:53,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 05:51:53,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:51:53,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 05:51:53,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=117, Unknown=4, NotChecked=0, Total=156 [2021-11-20 05:51:53,613 INFO L87 Difference]: Start difference. First operand 194 states and 206 transitions. Second operand has 13 states, 10 states have (on average 2.4) internal successors, (24), 13 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 05:51:56,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:56,972 INFO L93 Difference]: Finished difference Result 203 states and 218 transitions. [2021-11-20 05:51:56,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:51:56,973 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 2.4) internal successors, (24), 13 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 16 [2021-11-20 05:51:56,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:56,975 INFO L225 Difference]: With dead ends: 203 [2021-11-20 05:51:56,976 INFO L226 Difference]: Without dead ends: 203 [2021-11-20 05:51:56,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=55, Invalid=179, Unknown=6, NotChecked=0, Total=240 [2021-11-20 05:51:56,977 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 57 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 457 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:56,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 861 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 170 Invalid, 0 Unknown, 457 Unchecked, 0.5s Time] [2021-11-20 05:51:56,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-11-20 05:51:56,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 193. [2021-11-20 05:51:56,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 109 states have (on average 1.7339449541284404) internal successors, (189), 178 states have internal predecessors, (189), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 05:51:56,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 205 transitions. [2021-11-20 05:51:56,988 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 205 transitions. Word has length 16 [2021-11-20 05:51:56,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:56,988 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 205 transitions. [2021-11-20 05:51:56,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 2.4) internal successors, (24), 13 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 05:51:56,989 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 205 transitions. [2021-11-20 05:51:56,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-20 05:51:56,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:56,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:57,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:57,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:51:57,203 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-20 05:51:57,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:57,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1600340348, now seen corresponding path program 1 times [2021-11-20 05:51:57,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:51:57,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [547686390] [2021-11-20 05:51:57,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:57,207 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:51:57,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:51:57,207 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:51:57,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 05:51:57,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:57,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:51:57,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:57,355 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 [2021-11-20 05:51:57,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:57,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:57,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:57,539 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:51:57,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [547686390] [2021-11-20 05:51:57,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [547686390] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:51:57,540 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:51:57,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 05:51:57,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442934053] [2021-11-20 05:51:57,541 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:51:57,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:51:57,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:51:57,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:51:57,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:51:57,542 INFO L87 Difference]: Start difference. First operand 193 states and 205 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:51:58,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:58,379 INFO L93 Difference]: Finished difference Result 243 states and 262 transitions. [2021-11-20 05:51:58,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:51:58,380 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2021-11-20 05:51:58,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:58,382 INFO L225 Difference]: With dead ends: 243 [2021-11-20 05:51:58,382 INFO L226 Difference]: Without dead ends: 243 [2021-11-20 05:51:58,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:51:58,384 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 65 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:58,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 633 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 05:51:58,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-20 05:51:58,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 218. [2021-11-20 05:51:58,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 136 states have (on average 1.7573529411764706) internal successors, (239), 203 states have internal predecessors, (239), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 05:51:58,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 255 transitions. [2021-11-20 05:51:58,394 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 255 transitions. Word has length 25 [2021-11-20 05:51:58,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:58,394 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 255 transitions. [2021-11-20 05:51:58,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:51:58,395 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 255 transitions. [2021-11-20 05:51:58,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-20 05:51:58,396 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:58,396 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:58,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:58,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:51:58,612 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-20 05:51:58,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:58,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1600340347, now seen corresponding path program 1 times [2021-11-20 05:51:58,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:51:58,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [141816194] [2021-11-20 05:51:58,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:58,613 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:51:58,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:51:58,614 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:51:58,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 05:51:58,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:58,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 05:51:58,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:58,773 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 [2021-11-20 05:51:58,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:58,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:59,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:59,511 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:51:59,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [141816194] [2021-11-20 05:51:59,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [141816194] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:51:59,512 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:51:59,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-20 05:51:59,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760031557] [2021-11-20 05:51:59,512 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:51:59,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 05:51:59,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:51:59,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 05:51:59,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:51:59,514 INFO L87 Difference]: Start difference. First operand 218 states and 255 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-20 05:52:02,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:02,142 INFO L93 Difference]: Finished difference Result 277 states and 298 transitions. [2021-11-20 05:52:02,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:52:02,143 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 25 [2021-11-20 05:52:02,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:02,146 INFO L225 Difference]: With dead ends: 277 [2021-11-20 05:52:02,146 INFO L226 Difference]: Without dead ends: 277 [2021-11-20 05:52:02,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-20 05:52:02,147 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 101 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:02,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 984 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-20 05:52:02,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-11-20 05:52:02,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 220. [2021-11-20 05:52:02,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 139 states have (on average 1.7338129496402879) internal successors, (241), 204 states have internal predecessors, (241), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-20 05:52:02,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 259 transitions. [2021-11-20 05:52:02,157 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 259 transitions. Word has length 25 [2021-11-20 05:52:02,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:02,157 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 259 transitions. [2021-11-20 05:52:02,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-20 05:52:02,158 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 259 transitions. [2021-11-20 05:52:02,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 05:52:02,159 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:02,159 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:02,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:02,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:02,372 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-20 05:52:02,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:02,373 INFO L85 PathProgramCache]: Analyzing trace with hash -328716411, now seen corresponding path program 1 times [2021-11-20 05:52:02,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:02,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1039137998] [2021-11-20 05:52:02,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:02,374 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:02,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:02,375 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:02,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-20 05:52:02,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:02,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:52:02,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:02,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:02,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:02,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:02,687 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:02,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1039137998] [2021-11-20 05:52:02,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1039137998] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:02,687 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:02,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-20 05:52:02,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595717726] [2021-11-20 05:52:02,688 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:02,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:52:02,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:02,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:52:02,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:52:02,689 INFO L87 Difference]: Start difference. First operand 220 states and 259 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:52:02,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:02,795 INFO L93 Difference]: Finished difference Result 220 states and 258 transitions. [2021-11-20 05:52:02,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:52:02,796 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2021-11-20 05:52:02,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:02,798 INFO L225 Difference]: With dead ends: 220 [2021-11-20 05:52:02,798 INFO L226 Difference]: Without dead ends: 220 [2021-11-20 05:52:02,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:52:02,799 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 114 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:02,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 810 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:52:02,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-11-20 05:52:02,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2021-11-20 05:52:02,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 139 states have (on average 1.7266187050359711) internal successors, (240), 204 states have internal predecessors, (240), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-20 05:52:02,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 258 transitions. [2021-11-20 05:52:02,807 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 258 transitions. Word has length 27 [2021-11-20 05:52:02,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:02,808 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 258 transitions. [2021-11-20 05:52:02,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:52:02,808 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 258 transitions. [2021-11-20 05:52:02,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-20 05:52:02,809 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:02,810 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:02,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-20 05:52:03,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:03,020 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-20 05:52:03,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:03,021 INFO L85 PathProgramCache]: Analyzing trace with hash -444952336, now seen corresponding path program 1 times [2021-11-20 05:52:03,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:03,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1839159051] [2021-11-20 05:52:03,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:03,021 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:03,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:03,023 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:03,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-20 05:52:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:03,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 05:52:03,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:03,243 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 [2021-11-20 05:52:03,349 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 05:52:03,350 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 25 treesize of output 32 [2021-11-20 05:52:03,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:03,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:10,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:10,236 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:10,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1839159051] [2021-11-20 05:52:10,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1839159051] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:10,236 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:10,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-20 05:52:10,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809929999] [2021-11-20 05:52:10,237 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:10,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 05:52:10,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:10,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 05:52:10,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=80, Unknown=3, NotChecked=0, Total=110 [2021-11-20 05:52:10,238 INFO L87 Difference]: Start difference. First operand 220 states and 258 transitions. Second operand has 11 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-20 05:52:10,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:10,610 INFO L93 Difference]: Finished difference Result 249 states and 294 transitions. [2021-11-20 05:52:10,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 05:52:10,611 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2021-11-20 05:52:10,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:10,613 INFO L225 Difference]: With dead ends: 249 [2021-11-20 05:52:10,613 INFO L226 Difference]: Without dead ends: 249 [2021-11-20 05:52:10,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=27, Invalid=80, Unknown=3, NotChecked=0, Total=110 [2021-11-20 05:52:10,614 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 42 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 258 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:10,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 739 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 134 Invalid, 0 Unknown, 258 Unchecked, 0.4s Time] [2021-11-20 05:52:10,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-11-20 05:52:10,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 225. [2021-11-20 05:52:10,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 145 states have (on average 1.6827586206896552) internal successors, (244), 208 states have internal predecessors, (244), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-20 05:52:10,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 262 transitions. [2021-11-20 05:52:10,626 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 262 transitions. Word has length 33 [2021-11-20 05:52:10,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:10,626 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 262 transitions. [2021-11-20 05:52:10,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-20 05:52:10,627 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 262 transitions. [2021-11-20 05:52:10,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-20 05:52:10,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:10,628 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:10,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:10,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:10,843 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-20 05:52:10,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:10,843 INFO L85 PathProgramCache]: Analyzing trace with hash -444952335, now seen corresponding path program 1 times [2021-11-20 05:52:10,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:10,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [48799509] [2021-11-20 05:52:10,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:10,844 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:10,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:10,847 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:10,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-20 05:52:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:11,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-20 05:52:11,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:11,079 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 [2021-11-20 05:52:11,092 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 [2021-11-20 05:52:13,297 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 05:52:13,297 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 29 treesize of output 31 [2021-11-20 05:52:13,307 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 05:52:13,307 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 23 treesize of output 23 [2021-11-20 05:52:13,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:13,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:22,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:22,763 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:22,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [48799509] [2021-11-20 05:52:22,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [48799509] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:22,764 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:22,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-20 05:52:22,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935220164] [2021-11-20 05:52:22,764 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:22,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 05:52:22,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:22,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 05:52:22,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=100, Unknown=4, NotChecked=0, Total=132 [2021-11-20 05:52:22,766 INFO L87 Difference]: Start difference. First operand 225 states and 262 transitions. Second operand has 12 states, 9 states have (on average 4.666666666666667) internal successors, (42), 10 states have internal predecessors, (42), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-20 05:52:24,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:24,260 INFO L93 Difference]: Finished difference Result 351 states and 379 transitions. [2021-11-20 05:52:24,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:52:24,261 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 4.666666666666667) internal successors, (42), 10 states have internal predecessors, (42), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2021-11-20 05:52:24,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:24,264 INFO L225 Difference]: With dead ends: 351 [2021-11-20 05:52:24,264 INFO L226 Difference]: Without dead ends: 351 [2021-11-20 05:52:24,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=34, Invalid=118, Unknown=4, NotChecked=0, Total=156 [2021-11-20 05:52:24,266 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 269 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 515 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:24,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 996 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 266 Invalid, 0 Unknown, 515 Unchecked, 1.4s Time] [2021-11-20 05:52:24,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-11-20 05:52:24,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 225. [2021-11-20 05:52:24,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 145 states have (on average 1.6482758620689655) internal successors, (239), 208 states have internal predecessors, (239), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-20 05:52:24,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 257 transitions. [2021-11-20 05:52:24,279 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 257 transitions. Word has length 33 [2021-11-20 05:52:24,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:24,279 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 257 transitions. [2021-11-20 05:52:24,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 4.666666666666667) internal successors, (42), 10 states have internal predecessors, (42), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-20 05:52:24,280 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 257 transitions. [2021-11-20 05:52:24,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-20 05:52:24,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:24,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:24,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:24,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:24,497 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-20 05:52:24,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:24,497 INFO L85 PathProgramCache]: Analyzing trace with hash -908620425, now seen corresponding path program 1 times [2021-11-20 05:52:24,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:24,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1634456714] [2021-11-20 05:52:24,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:24,498 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:24,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:24,498 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:24,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-20 05:52:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:24,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 05:52:24,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:24,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:24,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:24,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:24,737 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:24,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1634456714] [2021-11-20 05:52:24,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1634456714] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:24,738 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:24,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 05:52:24,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258988416] [2021-11-20 05:52:24,738 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:24,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:52:24,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:24,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:52:24,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:52:24,740 INFO L87 Difference]: Start difference. First operand 225 states and 257 transitions. Second operand has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:52:25,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:25,091 INFO L93 Difference]: Finished difference Result 282 states and 337 transitions. [2021-11-20 05:52:25,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:52:25,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 34 [2021-11-20 05:52:25,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:25,095 INFO L225 Difference]: With dead ends: 282 [2021-11-20 05:52:25,095 INFO L226 Difference]: Without dead ends: 282 [2021-11-20 05:52:25,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:52:25,096 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 46 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:25,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 337 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 05:52:25,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-11-20 05:52:25,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 224. [2021-11-20 05:52:25,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 145 states have (on average 1.6344827586206896) internal successors, (237), 207 states have internal predecessors, (237), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-20 05:52:25,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 255 transitions. [2021-11-20 05:52:25,112 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 255 transitions. Word has length 34 [2021-11-20 05:52:25,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:25,113 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 255 transitions. [2021-11-20 05:52:25,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:52:25,113 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 255 transitions. [2021-11-20 05:52:25,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-20 05:52:25,121 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:25,121 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:25,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:25,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:25,336 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-20 05:52:25,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:25,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1897494371, now seen corresponding path program 1 times [2021-11-20 05:52:25,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:25,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2131890397] [2021-11-20 05:52:25,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:25,338 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:25,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:25,339 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:25,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-20 05:52:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:25,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:52:25,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:25,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:25,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:25,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:25,587 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:25,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2131890397] [2021-11-20 05:52:25,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2131890397] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:25,588 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:25,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 05:52:25,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027568118] [2021-11-20 05:52:25,588 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:25,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:52:25,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:25,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:52:25,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:52:25,590 INFO L87 Difference]: Start difference. First operand 224 states and 255 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:52:25,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:25,618 INFO L93 Difference]: Finished difference Result 268 states and 302 transitions. [2021-11-20 05:52:25,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:52:25,619 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2021-11-20 05:52:25,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:25,621 INFO L225 Difference]: With dead ends: 268 [2021-11-20 05:52:25,621 INFO L226 Difference]: Without dead ends: 268 [2021-11-20 05:52:25,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:52:25,622 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 36 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:25,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 577 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:52:25,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-11-20 05:52:25,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 228. [2021-11-20 05:52:25,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 149 states have (on average 1.6174496644295302) internal successors, (241), 211 states have internal predecessors, (241), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-20 05:52:25,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 259 transitions. [2021-11-20 05:52:25,631 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 259 transitions. Word has length 35 [2021-11-20 05:52:25,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:25,632 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 259 transitions. [2021-11-20 05:52:25,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:52:25,633 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 259 transitions. [2021-11-20 05:52:25,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-20 05:52:25,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:25,633 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:25,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:25,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:25,849 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-20 05:52:25,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:25,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1307216555, now seen corresponding path program 1 times [2021-11-20 05:52:25,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:25,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2028246706] [2021-11-20 05:52:25,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:25,850 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:25,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:25,851 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:25,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-20 05:52:25,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:25,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 05:52:25,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:26,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:26,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:26,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:26,783 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:26,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2028246706] [2021-11-20 05:52:26,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2028246706] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:26,783 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:26,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 11 [2021-11-20 05:52:26,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378514130] [2021-11-20 05:52:26,783 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:26,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 05:52:26,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:26,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 05:52:26,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:52:26,785 INFO L87 Difference]: Start difference. First operand 228 states and 259 transitions. Second operand has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 10 states have internal predecessors, (60), 3 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-20 05:52:26,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:26,822 INFO L93 Difference]: Finished difference Result 240 states and 272 transitions. [2021-11-20 05:52:26,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 05:52:26,823 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 10 states have internal predecessors, (60), 3 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 36 [2021-11-20 05:52:26,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:26,825 INFO L225 Difference]: With dead ends: 240 [2021-11-20 05:52:26,825 INFO L226 Difference]: Without dead ends: 240 [2021-11-20 05:52:26,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:52:26,826 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 38 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:26,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 792 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 50 Unchecked, 0.0s Time] [2021-11-20 05:52:26,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-11-20 05:52:26,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2021-11-20 05:52:26,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 161 states have (on average 1.5776397515527951) internal successors, (254), 223 states have internal predecessors, (254), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-20 05:52:26,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 272 transitions. [2021-11-20 05:52:26,834 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 272 transitions. Word has length 36 [2021-11-20 05:52:26,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:26,835 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 272 transitions. [2021-11-20 05:52:26,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 10 states have internal predecessors, (60), 3 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-20 05:52:26,835 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 272 transitions. [2021-11-20 05:52:26,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-20 05:52:26,836 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:26,836 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:26,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-20 05:52:27,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:27,048 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-20 05:52:27,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:27,048 INFO L85 PathProgramCache]: Analyzing trace with hash 359927496, now seen corresponding path program 1 times [2021-11-20 05:52:27,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:27,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1108038897] [2021-11-20 05:52:27,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:27,049 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:27,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:27,049 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:27,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-20 05:52:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:27,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:52:27,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:27,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:27,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:27,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:27,280 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:27,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1108038897] [2021-11-20 05:52:27,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1108038897] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:27,280 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:27,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-20 05:52:27,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232490541] [2021-11-20 05:52:27,280 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:27,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:52:27,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:27,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:52:27,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:52:27,282 INFO L87 Difference]: Start difference. First operand 240 states and 272 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:52:27,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:27,349 INFO L93 Difference]: Finished difference Result 266 states and 298 transitions. [2021-11-20 05:52:27,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:52:27,357 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2021-11-20 05:52:27,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:27,359 INFO L225 Difference]: With dead ends: 266 [2021-11-20 05:52:27,359 INFO L226 Difference]: Without dead ends: 266 [2021-11-20 05:52:27,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:52:27,360 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 168 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:27,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 650 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:52:27,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-11-20 05:52:27,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 242. [2021-11-20 05:52:27,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 163 states have (on average 1.5705521472392638) internal successors, (256), 225 states have internal predecessors, (256), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-20 05:52:27,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 274 transitions. [2021-11-20 05:52:27,370 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 274 transitions. Word has length 40 [2021-11-20 05:52:27,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:27,371 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 274 transitions. [2021-11-20 05:52:27,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:52:27,371 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 274 transitions. [2021-11-20 05:52:27,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-20 05:52:27,372 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:27,372 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:27,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:27,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:27,598 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-20 05:52:27,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:27,598 INFO L85 PathProgramCache]: Analyzing trace with hash -2125965028, now seen corresponding path program 1 times [2021-11-20 05:52:27,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:27,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258073073] [2021-11-20 05:52:27,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:27,599 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:27,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:27,599 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:27,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-20 05:52:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:27,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 05:52:27,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:27,762 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 [2021-11-20 05:52:27,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:27,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:28,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:28,082 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:28,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [258073073] [2021-11-20 05:52:28,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [258073073] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:28,083 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:28,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-20 05:52:28,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706417197] [2021-11-20 05:52:28,083 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:28,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:52:28,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:28,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:52:28,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:52:28,084 INFO L87 Difference]: Start difference. First operand 242 states and 274 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:52:29,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:29,090 INFO L93 Difference]: Finished difference Result 286 states and 309 transitions. [2021-11-20 05:52:29,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 05:52:29,091 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2021-11-20 05:52:29,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:29,092 INFO L225 Difference]: With dead ends: 286 [2021-11-20 05:52:29,092 INFO L226 Difference]: Without dead ends: 286 [2021-11-20 05:52:29,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 74 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:52:29,093 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 127 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:29,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 811 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 05:52:29,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-11-20 05:52:29,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 241. [2021-11-20 05:52:29,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 163 states have (on average 1.5521472392638036) internal successors, (253), 224 states have internal predecessors, (253), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-20 05:52:29,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 271 transitions. [2021-11-20 05:52:29,104 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 271 transitions. Word has length 42 [2021-11-20 05:52:29,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:29,105 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 271 transitions. [2021-11-20 05:52:29,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:52:29,105 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 271 transitions. [2021-11-20 05:52:29,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-20 05:52:29,106 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:29,106 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:29,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:29,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:29,317 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-20 05:52:29,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:29,317 INFO L85 PathProgramCache]: Analyzing trace with hash -2125965027, now seen corresponding path program 1 times [2021-11-20 05:52:29,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:29,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845318717] [2021-11-20 05:52:29,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:29,318 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:29,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:29,319 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:29,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-20 05:52:29,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:29,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-20 05:52:29,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:29,510 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 [2021-11-20 05:52:29,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:29,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:30,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:30,800 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:30,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845318717] [2021-11-20 05:52:30,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845318717] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:30,801 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:30,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-20 05:52:30,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485516232] [2021-11-20 05:52:30,801 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:30,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 05:52:30,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:30,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 05:52:30,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:52:30,803 INFO L87 Difference]: Start difference. First operand 241 states and 271 transitions. Second operand has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-20 05:52:34,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:34,598 INFO L93 Difference]: Finished difference Result 384 states and 412 transitions. [2021-11-20 05:52:34,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 05:52:34,599 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2021-11-20 05:52:34,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:34,602 INFO L225 Difference]: With dead ends: 384 [2021-11-20 05:52:34,602 INFO L226 Difference]: Without dead ends: 384 [2021-11-20 05:52:34,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-20 05:52:34,603 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 232 mSDsluCounter, 1308 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:34,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 1501 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-20 05:52:34,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-11-20 05:52:34,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 241. [2021-11-20 05:52:34,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 163 states have (on average 1.539877300613497) internal successors, (251), 224 states have internal predecessors, (251), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-20 05:52:34,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 269 transitions. [2021-11-20 05:52:34,613 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 269 transitions. Word has length 42 [2021-11-20 05:52:34,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:34,613 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 269 transitions. [2021-11-20 05:52:34,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-20 05:52:34,614 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 269 transitions. [2021-11-20 05:52:34,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-20 05:52:34,614 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:34,614 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:34,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:34,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:34,832 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-20 05:52:34,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:34,833 INFO L85 PathProgramCache]: Analyzing trace with hash -2001953137, now seen corresponding path program 1 times [2021-11-20 05:52:34,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:34,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94826228] [2021-11-20 05:52:34,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:34,834 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:34,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:34,835 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:34,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-20 05:52:35,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:35,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-20 05:52:35,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:35,195 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 05:52:35,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2021-11-20 05:52:35,623 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 05:52:35,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 19 [2021-11-20 05:52:35,717 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 05:52:35,718 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 34 treesize of output 30 [2021-11-20 05:52:35,875 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-20 05:52:35,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 48 [2021-11-20 05:52:37,434 INFO L354 Elim1Store]: treesize reduction 65, result has 17.7 percent of original size [2021-11-20 05:52:37,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 63 [2021-11-20 05:52:38,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:38,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:53:09,734 INFO L354 Elim1Store]: treesize reduction -1, result has 104.0 percent of original size [2021-11-20 05:53:09,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 68 [2021-11-20 05:53:25,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:25,865 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:53:25,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94826228] [2021-11-20 05:53:25,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94826228] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:25,866 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:25,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 15] imperfect sequences [] total 29 [2021-11-20 05:53:25,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952595975] [2021-11-20 05:53:25,866 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:25,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-20 05:53:25,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:53:25,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-20 05:53:25,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=746, Unknown=17, NotChecked=0, Total=870 [2021-11-20 05:53:25,868 INFO L87 Difference]: Start difference. First operand 241 states and 269 transitions. Second operand has 30 states, 25 states have (on average 2.88) internal successors, (72), 27 states have internal predecessors, (72), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 05:53:41,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:41,291 INFO L93 Difference]: Finished difference Result 251 states and 281 transitions. [2021-11-20 05:53:41,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 05:53:41,292 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 25 states have (on average 2.88) internal successors, (72), 27 states have internal predecessors, (72), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) Word has length 42 [2021-11-20 05:53:41,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:41,293 INFO L225 Difference]: With dead ends: 251 [2021-11-20 05:53:41,294 INFO L226 Difference]: Without dead ends: 251 [2021-11-20 05:53:41,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 53.6s TimeCoverageRelationStatistics Valid=160, Invalid=1076, Unknown=24, NotChecked=0, Total=1260 [2021-11-20 05:53:41,295 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 47 mSDsluCounter, 2016 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 883 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:41,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 2187 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 399 Invalid, 0 Unknown, 883 Unchecked, 0.8s Time] [2021-11-20 05:53:41,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-11-20 05:53:41,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 249. [2021-11-20 05:53:41,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 171 states have (on average 1.5263157894736843) internal successors, (261), 232 states have internal predecessors, (261), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-20 05:53:41,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 279 transitions. [2021-11-20 05:53:41,305 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 279 transitions. Word has length 42 [2021-11-20 05:53:41,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:41,305 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 279 transitions. [2021-11-20 05:53:41,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 25 states have (on average 2.88) internal successors, (72), 27 states have internal predecessors, (72), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 05:53:41,306 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 279 transitions. [2021-11-20 05:53:41,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-20 05:53:41,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:41,307 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:41,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:41,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:53:41,520 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-20 05:53:41,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:41,521 INFO L85 PathProgramCache]: Analyzing trace with hash -2001953136, now seen corresponding path program 1 times [2021-11-20 05:53:41,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:53:41,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69171747] [2021-11-20 05:53:41,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:41,522 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:53:41,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:53:41,523 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:53:41,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-20 05:53:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:41,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-20 05:53:41,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:41,980 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 05:53:41,980 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 45 treesize of output 47 [2021-11-20 05:53:42,004 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-20 05:53:42,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 41 [2021-11-20 05:53:42,439 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 05:53:42,439 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 30 treesize of output 32 [2021-11-20 05:53:42,810 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-11-20 05:53:42,811 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 3 case distinctions, treesize of input 35 treesize of output 44 [2021-11-20 05:53:48,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:48,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:53:51,944 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_hid_open_report_~#item~0#1.base_19| (_ BitVec 32))) (or (not (bvult |c_#StackHeapBarrier| |v_ULTIMATE.start_hid_open_report_~#item~0#1.base_19|)) (and (bvule |c_~#dev~0.offset| (bvadd (_ bv4 32) |c_~#dev~0.offset|)) (forall ((|v_ULTIMATE.start_hid_open_report_#t~ret52#1.base_49| (_ BitVec 32))) (bvule (bvadd (_ bv4 32) |c_~#dev~0.offset|) (select (store (store |c_#length| |v_ULTIMATE.start_hid_open_report_~#item~0#1.base_19| (_ bv16 32)) |v_ULTIMATE.start_hid_open_report_#t~ret52#1.base_49| (_ bv8 32)) |c_~#dev~0.base|)))))) is different from false [2021-11-20 05:54:15,099 WARN L227 SmtUtils]: Spent 5.21s on a formula simplification that was a NOOP. DAG size: 50 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 05:54:30,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:54:30,808 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:54:30,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69171747] [2021-11-20 05:54:30,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69171747] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:54:30,808 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:54:30,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 21 [2021-11-20 05:54:30,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961253076] [2021-11-20 05:54:30,809 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:54:30,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-20 05:54:30,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:54:30,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-20 05:54:30,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=322, Unknown=14, NotChecked=38, Total=462 [2021-11-20 05:54:30,810 INFO L87 Difference]: Start difference. First operand 249 states and 279 transitions. Second operand has 22 states, 19 states have (on average 3.789473684210526) internal successors, (72), 19 states have internal predecessors, (72), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 05:54:35,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:54:35,949 INFO L93 Difference]: Finished difference Result 252 states and 280 transitions. [2021-11-20 05:54:35,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 05:54:35,949 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 3.789473684210526) internal successors, (72), 19 states have internal predecessors, (72), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) Word has length 42 [2021-11-20 05:54:35,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:54:35,951 INFO L225 Difference]: With dead ends: 252 [2021-11-20 05:54:35,951 INFO L226 Difference]: Without dead ends: 252 [2021-11-20 05:54:35,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 43.3s TimeCoverageRelationStatistics Valid=126, Invalid=462, Unknown=16, NotChecked=46, Total=650 [2021-11-20 05:54:35,952 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 67 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 668 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 05:54:35,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 1626 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 375 Invalid, 0 Unknown, 668 Unchecked, 0.8s Time] [2021-11-20 05:54:35,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-11-20 05:54:35,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 249. [2021-11-20 05:54:35,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 171 states have (on average 1.5204678362573099) internal successors, (260), 232 states have internal predecessors, (260), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-20 05:54:35,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 278 transitions. [2021-11-20 05:54:35,960 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 278 transitions. Word has length 42 [2021-11-20 05:54:35,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:54:35,960 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 278 transitions. [2021-11-20 05:54:35,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 3.789473684210526) internal successors, (72), 19 states have internal predecessors, (72), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 05:54:35,961 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 278 transitions. [2021-11-20 05:54:35,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-20 05:54:35,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:54:35,962 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:54:35,974 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-11-20 05:54:36,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:54:36,174 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-20 05:54:36,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:54:36,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1930984993, now seen corresponding path program 1 times [2021-11-20 05:54:36,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:54:36,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1135637903] [2021-11-20 05:54:36,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:36,175 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:54:36,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:54:36,176 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:54:36,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-20 05:54:36,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:36,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:54:36,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:54:36,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:54:36,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:54:36,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:54:36,393 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:54:36,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1135637903] [2021-11-20 05:54:36,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1135637903] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:54:36,394 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:54:36,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 05:54:36,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632830329] [2021-11-20 05:54:36,394 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:54:36,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:54:36,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:54:36,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:54:36,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:54:36,395 INFO L87 Difference]: Start difference. First operand 249 states and 278 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:54:36,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:54:36,426 INFO L93 Difference]: Finished difference Result 252 states and 278 transitions. [2021-11-20 05:54:36,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:54:36,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2021-11-20 05:54:36,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:54:36,428 INFO L225 Difference]: With dead ends: 252 [2021-11-20 05:54:36,428 INFO L226 Difference]: Without dead ends: 252 [2021-11-20 05:54:36,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:54:36,429 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 37 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:54:36,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 539 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:54:36,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-11-20 05:54:36,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 249. [2021-11-20 05:54:36,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 171 states have (on average 1.5087719298245614) internal successors, (258), 232 states have internal predecessors, (258), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-20 05:54:36,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 276 transitions. [2021-11-20 05:54:36,437 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 276 transitions. Word has length 43 [2021-11-20 05:54:36,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:54:36,437 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 276 transitions. [2021-11-20 05:54:36,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:54:36,437 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 276 transitions. [2021-11-20 05:54:36,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-20 05:54:36,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:54:36,438 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:54:36,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-20 05:54:36,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:54:36,650 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting free_reportsErr0REQUIRES_VIOLATION === [free_reportsErr0REQUIRES_VIOLATION, free_reportsErr1REQUIRES_VIOLATION, free_reportsErr2REQUIRES_VIOLATION, free_reportsErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-20 05:54:36,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:54:36,650 INFO L85 PathProgramCache]: Analyzing trace with hash -269786093, now seen corresponding path program 1 times [2021-11-20 05:54:36,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:54:36,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1769023312] [2021-11-20 05:54:36,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:36,651 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:54:36,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:54:36,651 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:54:36,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-20 05:54:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:36,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-20 05:54:36,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:54:36,912 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 05:54:36,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 20 [2021-11-20 05:54:37,170 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 21 treesize of output 17 [2021-11-20 05:54:37,277 INFO L354 Elim1Store]: treesize reduction 54, result has 37.9 percent of original size [2021-11-20 05:54:37,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 47 treesize of output 68 [2021-11-20 05:54:37,405 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-20 05:54:37,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 72 [2021-11-20 05:54:37,561 INFO L354 Elim1Store]: treesize reduction 69, result has 39.5 percent of original size [2021-11-20 05:54:37,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 78 treesize of output 109 [2021-11-20 05:54:38,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 50 [2021-11-20 05:54:38,748 INFO L354 Elim1Store]: treesize reduction 172, result has 0.6 percent of original size [2021-11-20 05:54:38,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 100 treesize of output 43 [2021-11-20 05:54:39,806 INFO L354 Elim1Store]: treesize reduction 156, result has 14.3 percent of original size [2021-11-20 05:54:39,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 133 treesize of output 142 [2021-11-20 05:54:41,038 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 99 treesize of output 83 [2021-11-20 05:54:41,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:54:41,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:55:30,325 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (|v_ldv_zalloc_#t~malloc13#1.base_57| (_ BitVec 32)) (|ULTIMATE.start_hid_open_report_~device#1.base| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_57|))))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store (store |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_57| (_ bv0 1)) |c_ULTIMATE.start_hid_open_report_~#item~0#1.base| (_ bv0 1)) (select (select (store |c_#memory_$Pointer$.base| |v_ldv_zalloc_#t~malloc13#1.base_57| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ldv_zalloc_#t~malloc13#1.base_57|) |ULTIMATE.start_hid_open_report_~parser~0#1.offset| |ULTIMATE.start_hid_open_report_~device#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_hid_open_report_~parser~0#1.offset|) v_DerPreprocessor_1) (bvadd |ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv5 32)) v_DerPreprocessor_2) (bvadd (_ bv6 32) |ULTIMATE.start_hid_open_report_~parser~0#1.offset|) v_DerPreprocessor_3) (bvadd |ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv7 32)) v_DerPreprocessor_4)) |c_~#dev~0.base|) |c_~#dev~0.offset|))))))))))) (_ bv1 1))))) is different from false [2021-11-20 05:55:32,432 WARN L860 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (|v_ULTIMATE.start_hid_open_report_~#item~0#1.base_BEFORE_CALL_8| (_ BitVec 32)) (|ULTIMATE.start_hid_open_report_~device#1.base| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store (store |c_#valid| |c_ldv_zalloc_#res#1.base| (_ bv0 1)) |v_ULTIMATE.start_hid_open_report_~#item~0#1.base_BEFORE_CALL_8| (_ bv0 1)) (select (select (store |c_#memory_$Pointer$.base| |c_ldv_zalloc_#res#1.base| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_ldv_zalloc_#res#1.base|) |ULTIMATE.start_hid_open_report_~parser~0#1.offset| |ULTIMATE.start_hid_open_report_~device#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_hid_open_report_~parser~0#1.offset|) v_DerPreprocessor_1) (bvadd |ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv5 32)) v_DerPreprocessor_2) (bvadd (_ bv6 32) |ULTIMATE.start_hid_open_report_~parser~0#1.offset|) v_DerPreprocessor_3) (bvadd |ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv7 32)) v_DerPreprocessor_4)) |c_~#dev~0.base|) |c_~#dev~0.offset|))))))))))) (_ bv1 1))) (exists ((|ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (|v_ldv_zalloc_#t~malloc13#1.base_57| (_ BitVec 32)) (|ULTIMATE.start_hid_open_report_~device#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_57|))))))) (not (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store (store |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_57| (_ bv0 1)) |v_ULTIMATE.start_hid_open_report_~#item~0#1.base_BEFORE_CALL_8| (_ bv0 1)) (select (select (store |c_#memory_$Pointer$.base| |v_ldv_zalloc_#t~malloc13#1.base_57| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ldv_zalloc_#t~malloc13#1.base_57|) |ULTIMATE.start_hid_open_report_~parser~0#1.offset| |ULTIMATE.start_hid_open_report_~device#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_hid_open_report_~parser~0#1.offset|) v_DerPreprocessor_1) (bvadd |ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv5 32)) v_DerPreprocessor_2) (bvadd (_ bv6 32) |ULTIMATE.start_hid_open_report_~parser~0#1.offset|) v_DerPreprocessor_3) (bvadd |ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv7 32)) v_DerPreprocessor_4)) |c_~#dev~0.base|) |c_~#dev~0.offset|))))))))))))))))))) is different from true [2021-11-20 05:55:34,625 WARN L860 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (|v_ULTIMATE.start_hid_open_report_~#item~0#1.base_BEFORE_CALL_8| (_ BitVec 32)) (|ULTIMATE.start_hid_open_report_~device#1.base| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store (store |c_#valid| |c_ldv_zalloc_#t~malloc13#1.base| (_ bv0 1)) |v_ULTIMATE.start_hid_open_report_~#item~0#1.base_BEFORE_CALL_8| (_ bv0 1)) (select (select (store |c_#memory_$Pointer$.base| |c_ldv_zalloc_#t~malloc13#1.base| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_ldv_zalloc_#t~malloc13#1.base|) |ULTIMATE.start_hid_open_report_~parser~0#1.offset| |ULTIMATE.start_hid_open_report_~device#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_hid_open_report_~parser~0#1.offset|) v_DerPreprocessor_1) (bvadd |ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv5 32)) v_DerPreprocessor_2) (bvadd (_ bv6 32) |ULTIMATE.start_hid_open_report_~parser~0#1.offset|) v_DerPreprocessor_3) (bvadd |ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv7 32)) v_DerPreprocessor_4)) |c_~#dev~0.base|) |c_~#dev~0.offset|))))))))))) (_ bv1 1))) (exists ((|ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (|v_ldv_zalloc_#t~malloc13#1.base_57| (_ BitVec 32)) (|ULTIMATE.start_hid_open_report_~device#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_57|))))))) (not (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store (store |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_57| (_ bv0 1)) |v_ULTIMATE.start_hid_open_report_~#item~0#1.base_BEFORE_CALL_8| (_ bv0 1)) (select (select (store |c_#memory_$Pointer$.base| |v_ldv_zalloc_#t~malloc13#1.base_57| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ldv_zalloc_#t~malloc13#1.base_57|) |ULTIMATE.start_hid_open_report_~parser~0#1.offset| |ULTIMATE.start_hid_open_report_~device#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_hid_open_report_~parser~0#1.offset|) v_DerPreprocessor_1) (bvadd |ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv5 32)) v_DerPreprocessor_2) (bvadd (_ bv6 32) |ULTIMATE.start_hid_open_report_~parser~0#1.offset|) v_DerPreprocessor_3) (bvadd |ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv7 32)) v_DerPreprocessor_4)) |c_~#dev~0.base|) |c_~#dev~0.offset|))))))))))))))))))) is different from true [2021-11-20 05:55:36,837 WARN L860 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (|v_ldv_zalloc_#t~malloc13#1.base_58| (_ BitVec 32)) (|v_ULTIMATE.start_hid_open_report_~#item~0#1.base_BEFORE_CALL_8| (_ BitVec 32)) (|ULTIMATE.start_hid_open_report_~device#1.base| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_58|))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store (store |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_58| (_ bv0 1)) |v_ULTIMATE.start_hid_open_report_~#item~0#1.base_BEFORE_CALL_8| (_ bv0 1)) (select (select (store |c_#memory_$Pointer$.base| |v_ldv_zalloc_#t~malloc13#1.base_58| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ldv_zalloc_#t~malloc13#1.base_58|) |ULTIMATE.start_hid_open_report_~parser~0#1.offset| |ULTIMATE.start_hid_open_report_~device#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_hid_open_report_~parser~0#1.offset|) v_DerPreprocessor_1) (bvadd |ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv5 32)) v_DerPreprocessor_2) (bvadd (_ bv6 32) |ULTIMATE.start_hid_open_report_~parser~0#1.offset|) v_DerPreprocessor_3) (bvadd |ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv7 32)) v_DerPreprocessor_4)) |c_~#dev~0.base|) |c_~#dev~0.offset|))))))))))))) (_ bv1 1))) (exists ((|ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (|v_ldv_zalloc_#t~malloc13#1.base_57| (_ BitVec 32)) (|ULTIMATE.start_hid_open_report_~device#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_57|))))))) (not (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store (store |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_57| (_ bv0 1)) |v_ULTIMATE.start_hid_open_report_~#item~0#1.base_BEFORE_CALL_8| (_ bv0 1)) (select (select (store |c_#memory_$Pointer$.base| |v_ldv_zalloc_#t~malloc13#1.base_57| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ldv_zalloc_#t~malloc13#1.base_57|) |ULTIMATE.start_hid_open_report_~parser~0#1.offset| |ULTIMATE.start_hid_open_report_~device#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_hid_open_report_~parser~0#1.offset|) v_DerPreprocessor_1) (bvadd |ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv5 32)) v_DerPreprocessor_2) (bvadd (_ bv6 32) |ULTIMATE.start_hid_open_report_~parser~0#1.offset|) v_DerPreprocessor_3) (bvadd |ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv7 32)) v_DerPreprocessor_4)) |c_~#dev~0.base|) |c_~#dev~0.offset|))))))))))))))))))) is different from true [2021-11-20 05:55:38,933 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (|v_ULTIMATE.start_hid_open_report_~#item~0#1.base_22| (_ BitVec 32)) (|v_ldv_zalloc_#t~malloc13#1.base_57| (_ BitVec 32)) (|ULTIMATE.start_hid_open_report_~device#1.base| (_ BitVec 32))) (let ((.cse0 (store |c_#valid| |v_ULTIMATE.start_hid_open_report_~#item~0#1.base_22| (_ bv1 1)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_hid_open_report_~#item~0#1.base_22|))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store (store .cse0 |v_ldv_zalloc_#t~malloc13#1.base_57| (_ bv0 1)) |v_ULTIMATE.start_hid_open_report_~#item~0#1.base_22| (_ bv0 1)) (select (select (store |c_#memory_$Pointer$.base| |v_ldv_zalloc_#t~malloc13#1.base_57| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ldv_zalloc_#t~malloc13#1.base_57|) |ULTIMATE.start_hid_open_report_~parser~0#1.offset| |ULTIMATE.start_hid_open_report_~device#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_hid_open_report_~parser~0#1.offset|) v_DerPreprocessor_1) (bvadd |ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv5 32)) v_DerPreprocessor_2) (bvadd (_ bv6 32) |ULTIMATE.start_hid_open_report_~parser~0#1.offset|) v_DerPreprocessor_3) (bvadd |ULTIMATE.start_hid_open_report_~parser~0#1.offset| (_ bv7 32)) v_DerPreprocessor_4)) |c_~#dev~0.base|) |c_~#dev~0.offset|)))))))))))) (_ bv1 1))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select .cse0 |v_ldv_zalloc_#t~malloc13#1.base_57|))))))))))) is different from false [2021-11-20 05:55:38,960 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 787430 treesize of output 786406 [2021-11-20 05:55:40,829 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:55:40,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1769023312] [2021-11-20 05:55:40,830 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 05:55:40,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [764383670] [2021-11-20 05:55:40,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:55:40,830 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 05:55:40,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/cvc4 [2021-11-20 05:55:40,844 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 05:55:40,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62ea868-b513-4a4d-97ec-6e91c0161b46/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-20 05:55:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:41,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-20 05:55:41,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:55:42,148 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 24 treesize of output 20 [2021-11-20 05:55:42,306 INFO L354 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2021-11-20 05:55:42,306 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 21 treesize of output 26 [2021-11-20 05:55:42,513 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 05:55:42,513 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 45 treesize of output 37 [2021-11-20 05:55:43,241 INFO L354 Elim1Store]: treesize reduction 54, result has 37.9 percent of original size [2021-11-20 05:55:43,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 51 treesize of output 72 [2021-11-20 05:55:44,200 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-20 05:55:44,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 63 [2021-11-20 05:55:45,814 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 05:55:45,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 69 [2021-11-20 05:55:48,800 INFO L354 Elim1Store]: treesize reduction 65, result has 17.7 percent of original size [2021-11-20 05:55:48,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 97 treesize of output 100 [2021-11-20 05:55:51,272 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 05:55:51,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 81 [2021-11-20 05:55:52,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:55:52,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:02,438 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 116 treesize of output 112 [2021-11-20 05:56:03,981 INFO L354 Elim1Store]: treesize reduction 12, result has 75.5 percent of original size [2021-11-20 05:56:03,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 225 treesize of output 245 [2021-11-20 05:56:18,726 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 05:56:18,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 245 treesize of output 309