./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-memsafety/fillarray1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-memsafety/fillarray1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0d955c319d131d508b8618ef571ba23da865842e29989ccda626762130a6dda2 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:41:29,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:41:29,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:41:29,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:41:29,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:41:29,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:41:29,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:41:29,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:41:29,604 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:41:29,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:41:29,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:41:29,606 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:41:29,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:41:29,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:41:29,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:41:29,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:41:29,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:41:29,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:41:29,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:41:29,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:41:29,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:41:29,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:41:29,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:41:29,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:41:29,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:41:29,622 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:41:29,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:41:29,624 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:41:29,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:41:29,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:41:29,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:41:29,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:41:29,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:41:29,627 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:41:29,628 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:41:29,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:41:29,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:41:29,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:41:29,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:41:29,630 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:41:29,631 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:41:29,632 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-07 00:41:29,656 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:41:29,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:41:29,657 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:41:29,657 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:41:29,658 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:41:29,658 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:41:29,659 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:41:29,659 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:41:29,659 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:41:29,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:41:29,659 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 00:41:29,660 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-07 00:41:29,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:41:29,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 00:41:29,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:41:29,660 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-07 00:41:29,661 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-07 00:41:29,661 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-07 00:41:29,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:41:29,661 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-07 00:41:29,661 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 00:41:29,662 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:41:29,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:41:29,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:41:29,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:41:29,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:41:29,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:41:29,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:41:29,667 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:41:29,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 00:41:29,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:41:29,667 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_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d955c319d131d508b8618ef571ba23da865842e29989ccda626762130a6dda2 [2021-12-07 00:41:29,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:41:29,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:41:29,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:41:29,851 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:41:29,851 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:41:29,852 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/pthread-memsafety/fillarray1.i [2021-12-07 00:41:29,894 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/data/93aec5087/a62b8ecd3fb142e0a7ce0c73885cdf67/FLAGae6c9237b [2021-12-07 00:41:30,353 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:41:30,353 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/sv-benchmarks/c/pthread-memsafety/fillarray1.i [2021-12-07 00:41:30,366 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/data/93aec5087/a62b8ecd3fb142e0a7ce0c73885cdf67/FLAGae6c9237b [2021-12-07 00:41:30,881 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/data/93aec5087/a62b8ecd3fb142e0a7ce0c73885cdf67 [2021-12-07 00:41:30,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:41:30,884 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:41:30,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:41:30,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:41:30,888 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:41:30,889 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:41:30" (1/1) ... [2021-12-07 00:41:30,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c26592e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:41:30, skipping insertion in model container [2021-12-07 00:41:30,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:41:30" (1/1) ... [2021-12-07 00:41:30,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:41:30,930 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:41:31,196 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:41:31,202 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-12-07 00:41:31,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@117b7145 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:41:31, skipping insertion in model container [2021-12-07 00:41:31,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:41:31,202 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-07 00:41:31,204 INFO L158 Benchmark]: Toolchain (without parser) took 319.05ms. Allocated memory is still 115.3MB. Free memory was 67.9MB in the beginning and 85.8MB in the end (delta: -17.9MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. [2021-12-07 00:41:31,204 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 115.3MB. Free memory is still 86.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 00:41:31,205 INFO L158 Benchmark]: CACSL2BoogieTranslator took 316.86ms. Allocated memory is still 115.3MB. Free memory was 67.7MB in the beginning and 85.8MB in the end (delta: -18.1MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. [2021-12-07 00:41:31,206 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 115.3MB. Free memory is still 86.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 316.86ms. Allocated memory is still 115.3MB. Free memory was 67.7MB in the beginning and 85.8MB in the end (delta: -18.1MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1044]: 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_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-memsafety/fillarray1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0d955c319d131d508b8618ef571ba23da865842e29989ccda626762130a6dda2 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:41:32,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:41:32,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:41:32,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:41:32,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:41:32,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:41:32,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:41:32,676 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:41:32,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:41:32,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:41:32,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:41:32,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:41:32,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:41:32,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:41:32,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:41:32,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:41:32,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:41:32,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:41:32,689 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:41:32,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:41:32,693 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:41:32,694 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:41:32,695 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:41:32,696 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:41:32,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:41:32,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:41:32,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:41:32,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:41:32,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:41:32,703 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:41:32,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:41:32,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:41:32,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:41:32,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:41:32,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:41:32,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:41:32,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:41:32,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:41:32,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:41:32,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:41:32,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:41:32,710 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-07 00:41:32,730 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:41:32,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:41:32,731 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:41:32,731 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:41:32,731 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:41:32,732 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:41:32,732 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:41:32,732 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:41:32,732 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:41:32,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:41:32,733 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 00:41:32,733 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-07 00:41:32,733 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:41:32,733 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 00:41:32,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:41:32,734 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-07 00:41:32,734 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-07 00:41:32,734 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-07 00:41:32,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:41:32,734 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-07 00:41:32,734 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-07 00:41:32,734 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-07 00:41:32,735 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 00:41:32,735 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:41:32,735 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:41:32,735 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:41:32,735 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:41:32,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:41:32,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:41:32,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:41:32,736 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-07 00:41:32,736 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-07 00:41:32,736 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:41:32,736 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-07 00:41:32,736 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_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d955c319d131d508b8618ef571ba23da865842e29989ccda626762130a6dda2 [2021-12-07 00:41:32,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:41:32,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:41:32,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:41:32,977 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:41:32,977 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:41:32,978 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/pthread-memsafety/fillarray1.i [2021-12-07 00:41:33,023 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/data/b66c56636/263917edf94e41cb88c894097e8b67b5/FLAGa8e7e4444 [2021-12-07 00:41:33,444 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:41:33,445 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/sv-benchmarks/c/pthread-memsafety/fillarray1.i [2021-12-07 00:41:33,457 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/data/b66c56636/263917edf94e41cb88c894097e8b67b5/FLAGa8e7e4444 [2021-12-07 00:41:33,466 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/data/b66c56636/263917edf94e41cb88c894097e8b67b5 [2021-12-07 00:41:33,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:41:33,469 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:41:33,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:41:33,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:41:33,473 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:41:33,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:41:33" (1/1) ... [2021-12-07 00:41:33,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e4acabe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:41:33, skipping insertion in model container [2021-12-07 00:41:33,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:41:33" (1/1) ... [2021-12-07 00:41:33,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:41:33,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:41:33,788 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:41:33,796 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-07 00:41:33,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:41:33,837 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:41:33,841 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:41:33,873 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:41:33,919 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:41:33,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:41:33 WrapperNode [2021-12-07 00:41:33,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:41:33,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:41:33,920 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:41:33,920 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:41:33,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:41:33" (1/1) ... [2021-12-07 00:41:33,940 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:41:33" (1/1) ... [2021-12-07 00:41:33,956 INFO L137 Inliner]: procedures = 263, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 52 [2021-12-07 00:41:33,956 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:41:33,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:41:33,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:41:33,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:41:33,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:41:33" (1/1) ... [2021-12-07 00:41:33,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:41:33" (1/1) ... [2021-12-07 00:41:33,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:41:33" (1/1) ... [2021-12-07 00:41:33,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:41:33" (1/1) ... [2021-12-07 00:41:33,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:41:33" (1/1) ... [2021-12-07 00:41:33,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:41:33" (1/1) ... [2021-12-07 00:41:33,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:41:33" (1/1) ... [2021-12-07 00:41:33,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:41:33,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:41:33,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:41:33,981 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:41:33,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:41:33" (1/1) ... [2021-12-07 00:41:33,987 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:41:33,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:41:34,004 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 00:41:34,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 00:41:34,035 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-12-07 00:41:34,036 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-12-07 00:41:34,036 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-12-07 00:41:34,036 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-12-07 00:41:34,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-07 00:41:34,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-07 00:41:34,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-07 00:41:34,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-07 00:41:34,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:41:34,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:41:34,037 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-07 00:41:34,120 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:41:34,122 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:41:34,340 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:41:34,346 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:41:34,346 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-07 00:41:34,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:41:34 BoogieIcfgContainer [2021-12-07 00:41:34,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:41:34,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 00:41:34,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 00:41:34,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 00:41:34,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:41:33" (1/3) ... [2021-12-07 00:41:34,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@154d486b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:41:34, skipping insertion in model container [2021-12-07 00:41:34,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:41:33" (2/3) ... [2021-12-07 00:41:34,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@154d486b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:41:34, skipping insertion in model container [2021-12-07 00:41:34,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:41:34" (3/3) ... [2021-12-07 00:41:34,353 INFO L111 eAbstractionObserver]: Analyzing ICFG fillarray1.i [2021-12-07 00:41:34,357 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 00:41:34,357 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-12-07 00:41:34,358 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-07 00:41:34,379 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,379 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,380 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,380 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,380 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,380 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,380 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,380 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,380 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,380 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,381 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,381 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,381 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,381 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,381 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,381 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,381 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,382 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,382 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,382 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,382 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,382 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,382 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,382 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,382 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,383 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,383 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,383 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,383 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,383 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,383 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,383 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,384 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,384 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,384 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,384 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,384 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,384 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,384 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,385 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,385 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,385 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,385 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,385 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,385 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,385 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,385 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,386 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,386 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,386 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,386 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,386 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,386 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,387 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,387 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,387 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,387 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,387 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,387 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,387 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,387 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,388 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,388 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,393 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,394 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,394 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,394 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,394 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,397 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,398 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,398 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,398 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,398 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,398 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,398 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,401 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,402 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,402 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,402 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,402 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,402 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,402 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:41:34,403 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-07 00:41:34,435 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 00:41:34,440 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-07 00:41:34,441 INFO L340 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2021-12-07 00:41:34,450 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-12-07 00:41:34,460 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 105 transitions, 220 flow [2021-12-07 00:41:34,462 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 105 transitions, 220 flow [2021-12-07 00:41:34,463 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 103 places, 105 transitions, 220 flow [2021-12-07 00:41:34,495 INFO L129 PetriNetUnfolder]: 8/109 cut-off events. [2021-12-07 00:41:34,496 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-07 00:41:34,499 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 109 events. 8/109 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 152 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 71. Up to 3 conditions per place. [2021-12-07 00:41:34,502 INFO L116 LiptonReduction]: Number of co-enabled transitions 2546 [2021-12-07 00:41:41,187 INFO L131 LiptonReduction]: Checked pairs total: 7972 [2021-12-07 00:41:41,187 INFO L133 LiptonReduction]: Total number of compositions: 86 [2021-12-07 00:41:41,193 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 45 transitions, 100 flow [2021-12-07 00:41:41,231 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1135 states, 1082 states have (on average 3.353049907578558) internal successors, (3628), 1134 states have internal predecessors, (3628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:41,235 INFO L276 IsEmpty]: Start isEmpty. Operand has 1135 states, 1082 states have (on average 3.353049907578558) internal successors, (3628), 1134 states have internal predecessors, (3628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:41,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-12-07 00:41:41,239 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:41,239 INFO L514 BasicCegarLoop]: trace histogram [1] [2021-12-07 00:41:41,239 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-07 00:41:41,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:41,243 INFO L85 PathProgramCache]: Analyzing trace with hash 401, now seen corresponding path program 1 times [2021-12-07 00:41:41,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:41:41,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [847719927] [2021-12-07 00:41:41,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:41,252 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:41:41,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:41:41,253 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:41:41,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-07 00:41:41,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:41,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-07 00:41:41,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:41:41,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:41,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:41:41,305 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:41:41,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [847719927] [2021-12-07 00:41:41,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [847719927] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:41,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:41,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2021-12-07 00:41:41,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571671279] [2021-12-07 00:41:41,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:41,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-07 00:41:41,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:41:41,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-07 00:41:41,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 00:41:41,329 INFO L87 Difference]: Start difference. First operand has 1135 states, 1082 states have (on average 3.353049907578558) internal successors, (3628), 1134 states have internal predecessors, (3628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:41,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:41,473 INFO L93 Difference]: Finished difference Result 1133 states and 3428 transitions. [2021-12-07 00:41:41,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 00:41:41,475 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-12-07 00:41:41,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:41,501 INFO L225 Difference]: With dead ends: 1133 [2021-12-07 00:41:41,501 INFO L226 Difference]: Without dead ends: 1133 [2021-12-07 00:41:41,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 00:41:41,504 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:41,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:41:41,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2021-12-07 00:41:41,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1133. [2021-12-07 00:41:41,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1133 states, 1082 states have (on average 3.168207024029575) internal successors, (3428), 1132 states have internal predecessors, (3428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:41,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 3428 transitions. [2021-12-07 00:41:41,597 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 3428 transitions. Word has length 1 [2021-12-07 00:41:41,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:41,597 INFO L470 AbstractCegarLoop]: Abstraction has 1133 states and 3428 transitions. [2021-12-07 00:41:41,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:41,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 3428 transitions. [2021-12-07 00:41:41,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-12-07 00:41:41,598 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:41,598 INFO L514 BasicCegarLoop]: trace histogram [1, 1] [2021-12-07 00:41:41,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-07 00:41:41,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:41:41,800 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-07 00:41:41,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:41,803 INFO L85 PathProgramCache]: Analyzing trace with hash 12585, now seen corresponding path program 1 times [2021-12-07 00:41:41,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:41:41,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1714596601] [2021-12-07 00:41:41,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:41,806 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:41:41,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:41:41,809 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:41:41,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-07 00:41:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:41,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:41:41,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:41:41,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:41,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:41:41,994 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:41:41,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1714596601] [2021-12-07 00:41:41,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1714596601] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:41,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:41,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-07 00:41:41,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071890379] [2021-12-07 00:41:41,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:41,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:41:41,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:41:41,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:41:41,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:41,998 INFO L87 Difference]: Start difference. First operand 1133 states and 3428 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:42,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:42,139 INFO L93 Difference]: Finished difference Result 1132 states and 3427 transitions. [2021-12-07 00:41:42,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:41:42,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-12-07 00:41:42,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:42,151 INFO L225 Difference]: With dead ends: 1132 [2021-12-07 00:41:42,151 INFO L226 Difference]: Without dead ends: 1131 [2021-12-07 00:41:42,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:42,153 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 24 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:42,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 31 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:41:42,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2021-12-07 00:41:42,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 1131. [2021-12-07 00:41:42,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1081 states have (on average 3.169287696577243) internal successors, (3426), 1130 states have internal predecessors, (3426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:42,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 3426 transitions. [2021-12-07 00:41:42,189 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 3426 transitions. Word has length 2 [2021-12-07 00:41:42,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:42,189 INFO L470 AbstractCegarLoop]: Abstraction has 1131 states and 3426 transitions. [2021-12-07 00:41:42,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:42,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 3426 transitions. [2021-12-07 00:41:42,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-07 00:41:42,190 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:42,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-07 00:41:42,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-07 00:41:42,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:41:42,391 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-07 00:41:42,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:42,392 INFO L85 PathProgramCache]: Analyzing trace with hash 395542, now seen corresponding path program 1 times [2021-12-07 00:41:42,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:41:42,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044144880] [2021-12-07 00:41:42,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:42,393 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:41:42,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:41:42,394 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:41:42,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-07 00:41:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:42,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 00:41:42,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:41:42,516 INFO L354 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2021-12-07 00:41:42,517 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 2 case distinctions, treesize of input 12 treesize of output 27 [2021-12-07 00:41:42,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:42,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:41:42,549 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:41:42,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044144880] [2021-12-07 00:41:42,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044144880] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:42,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:42,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-07 00:41:42,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276152226] [2021-12-07 00:41:42,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:42,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:41:42,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:41:42,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:41:42,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:42,551 INFO L87 Difference]: Start difference. First operand 1131 states and 3426 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:42,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:42,693 INFO L93 Difference]: Finished difference Result 1120 states and 3403 transitions. [2021-12-07 00:41:42,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:41:42,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-12-07 00:41:42,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:42,701 INFO L225 Difference]: With dead ends: 1120 [2021-12-07 00:41:42,701 INFO L226 Difference]: Without dead ends: 1120 [2021-12-07 00:41:42,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:42,702 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 32 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:42,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 22 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:41:42,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2021-12-07 00:41:42,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 1120. [2021-12-07 00:41:42,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1073 states have (on average 3.1714818266542406) internal successors, (3403), 1119 states have internal predecessors, (3403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:42,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 3403 transitions. [2021-12-07 00:41:42,738 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 3403 transitions. Word has length 3 [2021-12-07 00:41:42,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:42,738 INFO L470 AbstractCegarLoop]: Abstraction has 1120 states and 3403 transitions. [2021-12-07 00:41:42,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:42,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 3403 transitions. [2021-12-07 00:41:42,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-07 00:41:42,739 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:42,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-07 00:41:42,749 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-07 00:41:42,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:41:42,940 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-07 00:41:42,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:42,940 INFO L85 PathProgramCache]: Analyzing trace with hash 395543, now seen corresponding path program 1 times [2021-12-07 00:41:42,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:41:42,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1801325790] [2021-12-07 00:41:42,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:42,941 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:41:42,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:41:42,942 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:41:42,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-07 00:41:42,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:42,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:41:42,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:41:43,015 INFO L354 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2021-12-07 00:41:43,015 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 2 case distinctions, treesize of input 12 treesize of output 33 [2021-12-07 00:41:43,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:43,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:41:43,033 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:41:43,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1801325790] [2021-12-07 00:41:43,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1801325790] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:43,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:43,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-07 00:41:43,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242457250] [2021-12-07 00:41:43,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:43,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:41:43,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:41:43,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:41:43,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:43,034 INFO L87 Difference]: Start difference. First operand 1120 states and 3403 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:43,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:43,134 INFO L93 Difference]: Finished difference Result 1109 states and 3380 transitions. [2021-12-07 00:41:43,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:41:43,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-12-07 00:41:43,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:43,145 INFO L225 Difference]: With dead ends: 1109 [2021-12-07 00:41:43,145 INFO L226 Difference]: Without dead ends: 1109 [2021-12-07 00:41:43,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:43,147 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 29 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:43,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 21 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:41:43,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2021-12-07 00:41:43,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1109. [2021-12-07 00:41:43,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1109 states, 1065 states have (on average 3.1737089201877935) internal successors, (3380), 1108 states have internal predecessors, (3380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:43,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 3380 transitions. [2021-12-07 00:41:43,191 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 3380 transitions. Word has length 3 [2021-12-07 00:41:43,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:43,191 INFO L470 AbstractCegarLoop]: Abstraction has 1109 states and 3380 transitions. [2021-12-07 00:41:43,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:43,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 3380 transitions. [2021-12-07 00:41:43,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-07 00:41:43,192 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:43,192 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-07 00:41:43,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-07 00:41:43,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:41:43,394 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-07 00:41:43,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:43,395 INFO L85 PathProgramCache]: Analyzing trace with hash 380126940, now seen corresponding path program 1 times [2021-12-07 00:41:43,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:41:43,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14859136] [2021-12-07 00:41:43,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:43,397 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:41:43,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:41:43,399 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:41:43,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-07 00:41:43,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:43,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 00:41:43,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:41:43,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:41:43,603 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-12-07 00:41:43,603 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 3 case distinctions, treesize of input 37 treesize of output 48 [2021-12-07 00:41:43,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:43,667 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:41:43,667 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:41:43,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14859136] [2021-12-07 00:41:43,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [14859136] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:43,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:43,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-07 00:41:43,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354001111] [2021-12-07 00:41:43,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:43,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:41:43,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:41:43,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:41:43,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:43,668 INFO L87 Difference]: Start difference. First operand 1109 states and 3380 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:43,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:43,729 INFO L93 Difference]: Finished difference Result 1108 states and 3377 transitions. [2021-12-07 00:41:43,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:41:43,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-07 00:41:43,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:43,737 INFO L225 Difference]: With dead ends: 1108 [2021-12-07 00:41:43,737 INFO L226 Difference]: Without dead ends: 1108 [2021-12-07 00:41:43,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:43,738 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:43,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 25 Unchecked, 0.1s Time] [2021-12-07 00:41:43,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2021-12-07 00:41:43,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 1108. [2021-12-07 00:41:43,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1108 states, 1064 states have (on average 3.1738721804511276) internal successors, (3377), 1107 states have internal predecessors, (3377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:43,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 3377 transitions. [2021-12-07 00:41:43,774 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 3377 transitions. Word has length 5 [2021-12-07 00:41:43,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:43,775 INFO L470 AbstractCegarLoop]: Abstraction has 1108 states and 3377 transitions. [2021-12-07 00:41:43,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:43,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 3377 transitions. [2021-12-07 00:41:43,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-07 00:41:43,775 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:43,775 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-07 00:41:43,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-07 00:41:43,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:41:43,976 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-07 00:41:43,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:43,977 INFO L85 PathProgramCache]: Analyzing trace with hash 380126927, now seen corresponding path program 1 times [2021-12-07 00:41:43,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:41:43,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2015340906] [2021-12-07 00:41:43,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:43,977 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:41:43,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:41:43,978 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:41:43,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-07 00:41:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:44,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:41:44,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:41:44,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:44,029 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:41:44,029 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:41:44,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2015340906] [2021-12-07 00:41:44,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2015340906] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:44,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:44,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-07 00:41:44,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840779104] [2021-12-07 00:41:44,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:44,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:41:44,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:41:44,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:41:44,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:44,031 INFO L87 Difference]: Start difference. First operand 1108 states and 3377 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:44,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:44,085 INFO L93 Difference]: Finished difference Result 987 states and 2992 transitions. [2021-12-07 00:41:44,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:41:44,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-07 00:41:44,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:44,096 INFO L225 Difference]: With dead ends: 987 [2021-12-07 00:41:44,096 INFO L226 Difference]: Without dead ends: 987 [2021-12-07 00:41:44,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:44,097 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:44,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 11 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:41:44,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2021-12-07 00:41:44,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 987. [2021-12-07 00:41:44,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 987 states, 952 states have (on average 3.142857142857143) internal successors, (2992), 986 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:44,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 2992 transitions. [2021-12-07 00:41:44,120 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 2992 transitions. Word has length 5 [2021-12-07 00:41:44,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:44,120 INFO L470 AbstractCegarLoop]: Abstraction has 987 states and 2992 transitions. [2021-12-07 00:41:44,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:44,120 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 2992 transitions. [2021-12-07 00:41:44,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-07 00:41:44,121 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:44,121 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-07 00:41:44,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-07 00:41:44,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:41:44,323 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-07 00:41:44,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:44,324 INFO L85 PathProgramCache]: Analyzing trace with hash 380126939, now seen corresponding path program 1 times [2021-12-07 00:41:44,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:41:44,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553229405] [2021-12-07 00:41:44,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:44,326 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:41:44,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:41:44,329 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:41:44,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-07 00:41:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:44,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:41:44,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:41:44,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:44,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:41:44,445 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:41:44,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553229405] [2021-12-07 00:41:44,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1553229405] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:44,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:44,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-07 00:41:44,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812241885] [2021-12-07 00:41:44,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:44,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:41:44,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:41:44,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:41:44,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:44,447 INFO L87 Difference]: Start difference. First operand 987 states and 2992 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:44,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:44,510 INFO L93 Difference]: Finished difference Result 866 states and 2607 transitions. [2021-12-07 00:41:44,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:41:44,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-07 00:41:44,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:44,516 INFO L225 Difference]: With dead ends: 866 [2021-12-07 00:41:44,516 INFO L226 Difference]: Without dead ends: 866 [2021-12-07 00:41:44,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:44,517 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:44,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 11 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:41:44,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2021-12-07 00:41:44,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 866. [2021-12-07 00:41:44,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 840 states have (on average 3.1035714285714286) internal successors, (2607), 865 states have internal predecessors, (2607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:44,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 2607 transitions. [2021-12-07 00:41:44,534 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 2607 transitions. Word has length 5 [2021-12-07 00:41:44,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:44,534 INFO L470 AbstractCegarLoop]: Abstraction has 866 states and 2607 transitions. [2021-12-07 00:41:44,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:44,535 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 2607 transitions. [2021-12-07 00:41:44,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-07 00:41:44,535 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:44,535 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-07 00:41:44,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-07 00:41:44,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:41:44,737 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-07 00:41:44,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:44,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1100968318, now seen corresponding path program 1 times [2021-12-07 00:41:44,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:41:44,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2109305555] [2021-12-07 00:41:44,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:44,741 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:41:44,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:41:44,743 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:41:44,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-07 00:41:44,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:44,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-07 00:41:44,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:41:44,887 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:41:44,888 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:41:44,902 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-12-07 00:41:44,903 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 3 case distinctions, treesize of input 35 treesize of output 42 [2021-12-07 00:41:45,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:45,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:41:45,021 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:41:45,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2109305555] [2021-12-07 00:41:45,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2109305555] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:45,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:45,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-07 00:41:45,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926867720] [2021-12-07 00:41:45,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:45,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:41:45,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:41:45,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:41:45,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:45,023 INFO L87 Difference]: Start difference. First operand 866 states and 2607 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:45,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:45,075 INFO L93 Difference]: Finished difference Result 865 states and 2604 transitions. [2021-12-07 00:41:45,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:41:45,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-07 00:41:45,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:45,080 INFO L225 Difference]: With dead ends: 865 [2021-12-07 00:41:45,080 INFO L226 Difference]: Without dead ends: 865 [2021-12-07 00:41:45,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:45,081 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:45,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 23 Unchecked, 0.0s Time] [2021-12-07 00:41:45,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2021-12-07 00:41:45,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 865. [2021-12-07 00:41:45,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 839 states have (on average 3.103694874851013) internal successors, (2604), 864 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:45,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 2604 transitions. [2021-12-07 00:41:45,100 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 2604 transitions. Word has length 6 [2021-12-07 00:41:45,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:45,101 INFO L470 AbstractCegarLoop]: Abstraction has 865 states and 2604 transitions. [2021-12-07 00:41:45,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:45,101 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 2604 transitions. [2021-12-07 00:41:45,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-07 00:41:45,101 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:45,101 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-07 00:41:45,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-07 00:41:45,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:41:45,303 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-07 00:41:45,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:45,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1100967512, now seen corresponding path program 1 times [2021-12-07 00:41:45,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:41:45,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916721247] [2021-12-07 00:41:45,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:45,306 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:41:45,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:41:45,308 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:41:45,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-07 00:41:45,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:45,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-07 00:41:45,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:41:45,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:41:45,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:41:45,488 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-12-07 00:41:45,488 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 3 case distinctions, treesize of input 37 treesize of output 44 [2021-12-07 00:41:45,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:45,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:41:45,587 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:41:45,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1916721247] [2021-12-07 00:41:45,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1916721247] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:45,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:45,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-07 00:41:45,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813567544] [2021-12-07 00:41:45,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:45,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:41:45,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:41:45,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:41:45,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:45,589 INFO L87 Difference]: Start difference. First operand 865 states and 2604 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:45,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:45,636 INFO L93 Difference]: Finished difference Result 864 states and 2601 transitions. [2021-12-07 00:41:45,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:41:45,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-07 00:41:45,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:45,642 INFO L225 Difference]: With dead ends: 864 [2021-12-07 00:41:45,642 INFO L226 Difference]: Without dead ends: 864 [2021-12-07 00:41:45,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:45,643 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:45,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 23 Unchecked, 0.0s Time] [2021-12-07 00:41:45,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2021-12-07 00:41:45,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 864. [2021-12-07 00:41:45,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 838 states have (on average 3.10381861575179) internal successors, (2601), 863 states have internal predecessors, (2601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:45,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 2601 transitions. [2021-12-07 00:41:45,660 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 2601 transitions. Word has length 6 [2021-12-07 00:41:45,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:45,660 INFO L470 AbstractCegarLoop]: Abstraction has 864 states and 2601 transitions. [2021-12-07 00:41:45,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:45,661 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 2601 transitions. [2021-12-07 00:41:45,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-07 00:41:45,661 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:45,661 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:41:45,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-12-07 00:41:45,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:41:45,863 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-07 00:41:45,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:45,864 INFO L85 PathProgramCache]: Analyzing trace with hash 229719746, now seen corresponding path program 1 times [2021-12-07 00:41:45,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:41:45,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1100358149] [2021-12-07 00:41:45,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:45,866 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:41:45,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:41:45,869 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:41:45,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-07 00:41:46,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:46,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-07 00:41:46,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:41:46,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:41:46,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:41:46,073 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-12-07 00:41:46,073 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 3 case distinctions, treesize of input 35 treesize of output 42 [2021-12-07 00:41:46,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:46,188 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:41:46,188 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:41:46,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1100358149] [2021-12-07 00:41:46,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1100358149] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:46,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:46,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-07 00:41:46,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421638444] [2021-12-07 00:41:46,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:46,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:41:46,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:41:46,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:41:46,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:46,189 INFO L87 Difference]: Start difference. First operand 864 states and 2601 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:46,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:46,235 INFO L93 Difference]: Finished difference Result 863 states and 2598 transitions. [2021-12-07 00:41:46,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:41:46,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-07 00:41:46,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:46,240 INFO L225 Difference]: With dead ends: 863 [2021-12-07 00:41:46,241 INFO L226 Difference]: Without dead ends: 863 [2021-12-07 00:41:46,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:46,241 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:46,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 23 Unchecked, 0.0s Time] [2021-12-07 00:41:46,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2021-12-07 00:41:46,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 863. [2021-12-07 00:41:46,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 837 states have (on average 3.1039426523297493) internal successors, (2598), 862 states have internal predecessors, (2598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:46,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 2598 transitions. [2021-12-07 00:41:46,267 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 2598 transitions. Word has length 7 [2021-12-07 00:41:46,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:46,268 INFO L470 AbstractCegarLoop]: Abstraction has 863 states and 2598 transitions. [2021-12-07 00:41:46,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:46,268 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 2598 transitions. [2021-12-07 00:41:46,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-07 00:41:46,269 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:46,269 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:41:46,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-12-07 00:41:46,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:41:46,471 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-07 00:41:46,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:46,472 INFO L85 PathProgramCache]: Analyzing trace with hash 229719839, now seen corresponding path program 1 times [2021-12-07 00:41:46,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:41:46,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [132463776] [2021-12-07 00:41:46,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:46,474 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:41:46,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:41:46,477 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:41:46,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-07 00:41:46,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:46,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-07 00:41:46,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:41:46,645 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:41:46,646 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:41:46,667 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-12-07 00:41:46,667 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 3 case distinctions, treesize of input 35 treesize of output 42 [2021-12-07 00:41:46,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:46,782 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:41:46,782 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:41:46,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [132463776] [2021-12-07 00:41:46,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [132463776] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:46,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:46,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-07 00:41:46,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328462178] [2021-12-07 00:41:46,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:46,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:41:46,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:41:46,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:41:46,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:46,783 INFO L87 Difference]: Start difference. First operand 863 states and 2598 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:46,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:46,824 INFO L93 Difference]: Finished difference Result 862 states and 2594 transitions. [2021-12-07 00:41:46,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:41:46,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-07 00:41:46,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:46,829 INFO L225 Difference]: With dead ends: 862 [2021-12-07 00:41:46,829 INFO L226 Difference]: Without dead ends: 862 [2021-12-07 00:41:46,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:46,830 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:46,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 21 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 23 Unchecked, 0.0s Time] [2021-12-07 00:41:46,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2021-12-07 00:41:46,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 862. [2021-12-07 00:41:46,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 836 states have (on average 3.102870813397129) internal successors, (2594), 861 states have internal predecessors, (2594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:46,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 2594 transitions. [2021-12-07 00:41:46,847 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 2594 transitions. Word has length 7 [2021-12-07 00:41:46,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:46,847 INFO L470 AbstractCegarLoop]: Abstraction has 862 states and 2594 transitions. [2021-12-07 00:41:46,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:46,847 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 2594 transitions. [2021-12-07 00:41:46,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-07 00:41:46,848 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:46,848 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:41:46,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-12-07 00:41:47,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:41:47,050 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-07 00:41:47,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:47,051 INFO L85 PathProgramCache]: Analyzing trace with hash 229744453, now seen corresponding path program 1 times [2021-12-07 00:41:47,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:41:47,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1595178473] [2021-12-07 00:41:47,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:47,053 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:41:47,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:41:47,055 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:41:47,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-07 00:41:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:47,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 00:41:47,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:41:47,235 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:41:47,257 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-12-07 00:41:47,257 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 3 case distinctions, treesize of input 39 treesize of output 50 [2021-12-07 00:41:47,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:47,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:41:47,306 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:41:47,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1595178473] [2021-12-07 00:41:47,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1595178473] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:47,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:47,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-07 00:41:47,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693922934] [2021-12-07 00:41:47,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:47,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:41:47,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:41:47,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:41:47,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:47,307 INFO L87 Difference]: Start difference. First operand 862 states and 2594 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:47,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:47,356 INFO L93 Difference]: Finished difference Result 861 states and 2590 transitions. [2021-12-07 00:41:47,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:41:47,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-07 00:41:47,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:47,362 INFO L225 Difference]: With dead ends: 861 [2021-12-07 00:41:47,362 INFO L226 Difference]: Without dead ends: 861 [2021-12-07 00:41:47,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:47,362 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:47,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 21 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 23 Unchecked, 0.0s Time] [2021-12-07 00:41:47,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2021-12-07 00:41:47,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2021-12-07 00:41:47,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 835 states have (on average 3.1017964071856285) internal successors, (2590), 860 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:47,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 2590 transitions. [2021-12-07 00:41:47,379 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 2590 transitions. Word has length 7 [2021-12-07 00:41:47,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:47,379 INFO L470 AbstractCegarLoop]: Abstraction has 861 states and 2590 transitions. [2021-12-07 00:41:47,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:47,380 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 2590 transitions. [2021-12-07 00:41:47,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-07 00:41:47,380 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:47,380 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:41:47,388 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-12-07 00:41:47,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:41:47,582 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-07 00:41:47,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:47,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1468623509, now seen corresponding path program 1 times [2021-12-07 00:41:47,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:41:47,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [166978790] [2021-12-07 00:41:47,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:47,585 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:41:47,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:41:47,587 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:41:47,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-07 00:41:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:47,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-07 00:41:47,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:41:47,771 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:41:47,771 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:41:47,789 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-12-07 00:41:47,789 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 3 case distinctions, treesize of input 39 treesize of output 46 [2021-12-07 00:41:47,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:47,900 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:41:47,900 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:41:47,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [166978790] [2021-12-07 00:41:47,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [166978790] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:47,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:47,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-07 00:41:47,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364917583] [2021-12-07 00:41:47,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:47,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:41:47,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:41:47,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:41:47,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:47,901 INFO L87 Difference]: Start difference. First operand 861 states and 2590 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:47,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:47,951 INFO L93 Difference]: Finished difference Result 860 states and 2586 transitions. [2021-12-07 00:41:47,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:41:47,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-07 00:41:47,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:47,956 INFO L225 Difference]: With dead ends: 860 [2021-12-07 00:41:47,956 INFO L226 Difference]: Without dead ends: 860 [2021-12-07 00:41:47,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:47,957 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:47,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 21 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 23 Unchecked, 0.0s Time] [2021-12-07 00:41:47,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2021-12-07 00:41:47,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 860. [2021-12-07 00:41:47,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 834 states have (on average 3.1007194244604315) internal successors, (2586), 859 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:47,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 2586 transitions. [2021-12-07 00:41:47,978 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 2586 transitions. Word has length 8 [2021-12-07 00:41:47,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:47,978 INFO L470 AbstractCegarLoop]: Abstraction has 860 states and 2586 transitions. [2021-12-07 00:41:47,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:47,979 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 2586 transitions. [2021-12-07 00:41:47,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-07 00:41:47,979 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:47,979 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:41:47,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-12-07 00:41:48,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:41:48,181 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-07 00:41:48,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:48,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1468623137, now seen corresponding path program 1 times [2021-12-07 00:41:48,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:41:48,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235227958] [2021-12-07 00:41:48,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:48,185 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:41:48,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:41:48,187 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:41:48,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-07 00:41:48,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:48,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 00:41:48,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:41:48,261 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:41:48,279 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-12-07 00:41:48,279 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 3 case distinctions, treesize of input 35 treesize of output 46 [2021-12-07 00:41:48,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:48,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:41:48,325 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:41:48,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235227958] [2021-12-07 00:41:48,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235227958] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:48,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:48,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-07 00:41:48,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139932290] [2021-12-07 00:41:48,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:48,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:41:48,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:41:48,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:41:48,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:48,326 INFO L87 Difference]: Start difference. First operand 860 states and 2586 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:48,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:48,367 INFO L93 Difference]: Finished difference Result 859 states and 2582 transitions. [2021-12-07 00:41:48,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:41:48,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-07 00:41:48,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:48,372 INFO L225 Difference]: With dead ends: 859 [2021-12-07 00:41:48,372 INFO L226 Difference]: Without dead ends: 859 [2021-12-07 00:41:48,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:48,373 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:48,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 21 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 23 Unchecked, 0.0s Time] [2021-12-07 00:41:48,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2021-12-07 00:41:48,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 859. [2021-12-07 00:41:48,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 833 states have (on average 3.099639855942377) internal successors, (2582), 858 states have internal predecessors, (2582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:48,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 2582 transitions. [2021-12-07 00:41:48,394 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 2582 transitions. Word has length 8 [2021-12-07 00:41:48,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:48,394 INFO L470 AbstractCegarLoop]: Abstraction has 859 states and 2582 transitions. [2021-12-07 00:41:48,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:48,394 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 2582 transitions. [2021-12-07 00:41:48,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-07 00:41:48,395 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:48,395 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:41:48,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-12-07 00:41:48,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:41:48,596 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-07 00:41:48,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:48,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1468620037, now seen corresponding path program 1 times [2021-12-07 00:41:48,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:41:48,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2018127110] [2021-12-07 00:41:48,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:48,599 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:41:48,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:41:48,602 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:41:48,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-07 00:41:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:48,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-07 00:41:48,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:41:48,772 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:41:48,788 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-12-07 00:41:48,788 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 3 case distinctions, treesize of input 35 treesize of output 46 [2021-12-07 00:41:48,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:48,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:41:48,836 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:41:48,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2018127110] [2021-12-07 00:41:48,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2018127110] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:48,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:48,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-07 00:41:48,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985843146] [2021-12-07 00:41:48,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:48,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:41:48,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:41:48,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:41:48,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:48,838 INFO L87 Difference]: Start difference. First operand 859 states and 2582 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:48,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:48,865 INFO L93 Difference]: Finished difference Result 864 states and 2600 transitions. [2021-12-07 00:41:48,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:41:48,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-07 00:41:48,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:48,870 INFO L225 Difference]: With dead ends: 864 [2021-12-07 00:41:48,870 INFO L226 Difference]: Without dead ends: 864 [2021-12-07 00:41:48,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:48,871 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 5 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:48,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 21 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 23 Unchecked, 0.0s Time] [2021-12-07 00:41:48,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2021-12-07 00:41:48,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 864. [2021-12-07 00:41:48,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 838 states have (on average 3.1026252983293556) internal successors, (2600), 863 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:48,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 2600 transitions. [2021-12-07 00:41:48,889 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 2600 transitions. Word has length 8 [2021-12-07 00:41:48,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:48,889 INFO L470 AbstractCegarLoop]: Abstraction has 864 states and 2600 transitions. [2021-12-07 00:41:48,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:48,890 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 2600 transitions. [2021-12-07 00:41:48,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-07 00:41:48,890 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:48,890 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:41:48,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-12-07 00:41:49,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:41:49,091 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-07 00:41:49,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:49,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1466590262, now seen corresponding path program 1 times [2021-12-07 00:41:49,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:41:49,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1162374045] [2021-12-07 00:41:49,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:49,093 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:41:49,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:41:49,095 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:41:49,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-07 00:41:49,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:49,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-07 00:41:49,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:41:50,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:50,236 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:41:50,236 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:41:50,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1162374045] [2021-12-07 00:41:50,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1162374045] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:50,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:50,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:41:50,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301208524] [2021-12-07 00:41:50,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:50,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:41:50,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:41:50,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:41:50,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:41:50,237 INFO L87 Difference]: Start difference. First operand 864 states and 2600 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:50,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:50,287 INFO L93 Difference]: Finished difference Result 863 states and 2597 transitions. [2021-12-07 00:41:50,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:41:50,288 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-07 00:41:50,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:50,291 INFO L225 Difference]: With dead ends: 863 [2021-12-07 00:41:50,292 INFO L226 Difference]: Without dead ends: 863 [2021-12-07 00:41:50,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:41:50,292 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:50,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 69 Unchecked, 0.0s Time] [2021-12-07 00:41:50,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2021-12-07 00:41:50,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 863. [2021-12-07 00:41:50,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 837 states have (on average 3.1027479091995223) internal successors, (2597), 862 states have internal predecessors, (2597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:50,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 2597 transitions. [2021-12-07 00:41:50,312 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 2597 transitions. Word has length 8 [2021-12-07 00:41:50,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:50,312 INFO L470 AbstractCegarLoop]: Abstraction has 863 states and 2597 transitions. [2021-12-07 00:41:50,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:50,312 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 2597 transitions. [2021-12-07 00:41:50,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-07 00:41:50,312 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:50,312 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:41:50,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-12-07 00:41:50,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:41:50,514 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-07 00:41:50,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:50,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1467857034, now seen corresponding path program 1 times [2021-12-07 00:41:50,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:41:50,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1781742270] [2021-12-07 00:41:50,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:50,516 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:41:50,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:41:50,517 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:41:50,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-07 00:41:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:50,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-07 00:41:50,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:41:50,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:41:50,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:41:50,623 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-12-07 00:41:50,623 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 3 case distinctions, treesize of input 35 treesize of output 42 [2021-12-07 00:41:50,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:50,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:41:50,713 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:41:50,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1781742270] [2021-12-07 00:41:50,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1781742270] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:50,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:50,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-07 00:41:50,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356272295] [2021-12-07 00:41:50,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:50,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:41:50,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:41:50,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:41:50,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:50,714 INFO L87 Difference]: Start difference. First operand 863 states and 2597 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:50,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:50,744 INFO L93 Difference]: Finished difference Result 878 states and 2641 transitions. [2021-12-07 00:41:50,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:41:50,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-07 00:41:50,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:50,747 INFO L225 Difference]: With dead ends: 878 [2021-12-07 00:41:50,747 INFO L226 Difference]: Without dead ends: 878 [2021-12-07 00:41:50,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:50,748 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 5 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:50,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 21 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 23 Unchecked, 0.0s Time] [2021-12-07 00:41:50,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2021-12-07 00:41:50,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2021-12-07 00:41:50,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 852 states have (on average 3.0997652582159625) internal successors, (2641), 877 states have internal predecessors, (2641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:50,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 2641 transitions. [2021-12-07 00:41:50,769 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 2641 transitions. Word has length 8 [2021-12-07 00:41:50,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:50,769 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 2641 transitions. [2021-12-07 00:41:50,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:50,769 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 2641 transitions. [2021-12-07 00:41:50,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-07 00:41:50,769 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:50,769 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:41:50,777 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-12-07 00:41:50,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:41:50,971 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-07 00:41:50,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:50,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1718577764, now seen corresponding path program 1 times [2021-12-07 00:41:50,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:41:50,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [968669609] [2021-12-07 00:41:50,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:50,974 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:41:50,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:41:50,976 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:41:50,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-07 00:41:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:51,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-07 00:41:51,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:41:53,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:53,746 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:41:53,747 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:41:53,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [968669609] [2021-12-07 00:41:53,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [968669609] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:53,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:53,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:41:53,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361236192] [2021-12-07 00:41:53,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:53,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:41:53,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:41:53,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:41:53,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=20, Unknown=1, NotChecked=0, Total=30 [2021-12-07 00:41:53,748 INFO L87 Difference]: Start difference. First operand 878 states and 2641 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:53,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:53,790 INFO L93 Difference]: Finished difference Result 881 states and 2650 transitions. [2021-12-07 00:41:53,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:41:53,791 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-07 00:41:53,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:53,793 INFO L225 Difference]: With dead ends: 881 [2021-12-07 00:41:53,793 INFO L226 Difference]: Without dead ends: 881 [2021-12-07 00:41:53,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=9, Invalid=20, Unknown=1, NotChecked=0, Total=30 [2021-12-07 00:41:53,794 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:53,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 68 Unchecked, 0.0s Time] [2021-12-07 00:41:53,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2021-12-07 00:41:53,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 881. [2021-12-07 00:41:53,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 855 states have (on average 3.0994152046783627) internal successors, (2650), 880 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:53,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 2650 transitions. [2021-12-07 00:41:53,810 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 2650 transitions. Word has length 9 [2021-12-07 00:41:53,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:53,810 INFO L470 AbstractCegarLoop]: Abstraction has 881 states and 2650 transitions. [2021-12-07 00:41:53,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:53,810 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 2650 transitions. [2021-12-07 00:41:53,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-07 00:41:53,811 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:53,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:41:53,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-12-07 00:41:54,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:41:54,012 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-07 00:41:54,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:54,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1717310992, now seen corresponding path program 1 times [2021-12-07 00:41:54,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:41:54,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1008067813] [2021-12-07 00:41:54,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:54,015 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:41:54,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:41:54,018 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:41:54,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-12-07 00:41:54,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:54,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:41:54,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:41:54,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:54,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:41:54,144 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:41:54,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1008067813] [2021-12-07 00:41:54,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1008067813] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:54,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:54,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:41:54,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637035717] [2021-12-07 00:41:54,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:54,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:41:54,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:41:54,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:41:54,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:41:54,146 INFO L87 Difference]: Start difference. First operand 881 states and 2650 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:54,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:54,280 INFO L93 Difference]: Finished difference Result 943 states and 2834 transitions. [2021-12-07 00:41:54,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:41:54,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-07 00:41:54,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:54,285 INFO L225 Difference]: With dead ends: 943 [2021-12-07 00:41:54,285 INFO L226 Difference]: Without dead ends: 943 [2021-12-07 00:41:54,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:41:54,285 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 41 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:54,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 38 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:41:54,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2021-12-07 00:41:54,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 943. [2021-12-07 00:41:54,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 943 states, 917 states have (on average 3.0905125408942205) internal successors, (2834), 942 states have internal predecessors, (2834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:54,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 2834 transitions. [2021-12-07 00:41:54,314 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 2834 transitions. Word has length 9 [2021-12-07 00:41:54,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:54,314 INFO L470 AbstractCegarLoop]: Abstraction has 943 states and 2834 transitions. [2021-12-07 00:41:54,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:54,314 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 2834 transitions. [2021-12-07 00:41:54,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-07 00:41:54,314 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:54,315 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:41:54,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-12-07 00:41:54,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:41:54,516 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-07 00:41:54,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:54,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1717310806, now seen corresponding path program 1 times [2021-12-07 00:41:54,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:41:54,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1497418888] [2021-12-07 00:41:54,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:54,520 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:41:54,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:41:54,522 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:41:54,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-12-07 00:41:54,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:54,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-07 00:41:54,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:41:54,612 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:41:54,612 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:41:54,629 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-12-07 00:41:54,629 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 3 case distinctions, treesize of input 35 treesize of output 42 [2021-12-07 00:41:54,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:54,736 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:41:54,736 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:41:54,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1497418888] [2021-12-07 00:41:54,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1497418888] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:54,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:54,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-07 00:41:54,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382016008] [2021-12-07 00:41:54,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:54,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:41:54,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:41:54,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:41:54,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:54,737 INFO L87 Difference]: Start difference. First operand 943 states and 2834 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:54,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:54,777 INFO L93 Difference]: Finished difference Result 941 states and 2826 transitions. [2021-12-07 00:41:54,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:41:54,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-07 00:41:54,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:54,780 INFO L225 Difference]: With dead ends: 941 [2021-12-07 00:41:54,780 INFO L226 Difference]: Without dead ends: 941 [2021-12-07 00:41:54,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:54,781 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:54,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 21 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 23 Unchecked, 0.0s Time] [2021-12-07 00:41:54,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2021-12-07 00:41:54,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 941. [2021-12-07 00:41:54,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 915 states have (on average 3.088524590163934) internal successors, (2826), 940 states have internal predecessors, (2826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:54,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 2826 transitions. [2021-12-07 00:41:54,801 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 2826 transitions. Word has length 9 [2021-12-07 00:41:54,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:54,801 INFO L470 AbstractCegarLoop]: Abstraction has 941 states and 2826 transitions. [2021-12-07 00:41:54,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:54,801 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 2826 transitions. [2021-12-07 00:41:54,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-07 00:41:54,802 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:54,802 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:41:54,809 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-12-07 00:41:55,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:41:55,003 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-07 00:41:55,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:55,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1717322555, now seen corresponding path program 1 times [2021-12-07 00:41:55,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:41:55,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427538297] [2021-12-07 00:41:55,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:55,006 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:41:55,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:41:55,008 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:41:55,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-12-07 00:41:55,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:55,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:41:55,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:41:55,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:55,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:41:55,197 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:41:55,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427538297] [2021-12-07 00:41:55,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427538297] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:55,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:55,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:41:55,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463505486] [2021-12-07 00:41:55,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:55,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:41:55,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:41:55,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:41:55,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:41:55,199 INFO L87 Difference]: Start difference. First operand 941 states and 2826 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:55,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:55,324 INFO L93 Difference]: Finished difference Result 556 states and 1513 transitions. [2021-12-07 00:41:55,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:41:55,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-07 00:41:55,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:55,326 INFO L225 Difference]: With dead ends: 556 [2021-12-07 00:41:55,326 INFO L226 Difference]: Without dead ends: 556 [2021-12-07 00:41:55,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:41:55,326 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 46 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:55,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 35 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:41:55,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-12-07 00:41:55,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 556. [2021-12-07 00:41:55,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 542 states have (on average 2.791512915129151) internal successors, (1513), 555 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:55,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 1513 transitions. [2021-12-07 00:41:55,336 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 1513 transitions. Word has length 9 [2021-12-07 00:41:55,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:55,336 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 1513 transitions. [2021-12-07 00:41:55,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:55,337 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 1513 transitions. [2021-12-07 00:41:55,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-07 00:41:55,337 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:55,337 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:41:55,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-12-07 00:41:55,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:41:55,538 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-07 00:41:55,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:55,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1717418345, now seen corresponding path program 2 times [2021-12-07 00:41:55,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:41:55,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1149189658] [2021-12-07 00:41:55,541 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:41:55,542 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:41:55,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:41:55,544 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:41:55,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-12-07 00:41:55,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-07 00:41:55,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:41:55,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-07 00:41:55,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:41:55,659 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:41:55,660 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:41:55,674 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-12-07 00:41:55,675 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 3 case distinctions, treesize of input 35 treesize of output 42 [2021-12-07 00:41:55,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:55,781 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:41:55,781 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:41:55,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1149189658] [2021-12-07 00:41:55,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1149189658] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:55,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:55,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-07 00:41:55,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763378689] [2021-12-07 00:41:55,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:55,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:41:55,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:41:55,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:41:55,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:55,782 INFO L87 Difference]: Start difference. First operand 556 states and 1513 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:55,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:55,806 INFO L93 Difference]: Finished difference Result 561 states and 1531 transitions. [2021-12-07 00:41:55,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:41:55,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-07 00:41:55,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:55,808 INFO L225 Difference]: With dead ends: 561 [2021-12-07 00:41:55,808 INFO L226 Difference]: Without dead ends: 561 [2021-12-07 00:41:55,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:41:55,808 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 5 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:55,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 21 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 23 Unchecked, 0.0s Time] [2021-12-07 00:41:55,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-12-07 00:41:55,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2021-12-07 00:41:55,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 547 states have (on average 2.7989031078610602) internal successors, (1531), 560 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:55,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 1531 transitions. [2021-12-07 00:41:55,818 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 1531 transitions. Word has length 9 [2021-12-07 00:41:55,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:55,818 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 1531 transitions. [2021-12-07 00:41:55,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:55,818 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 1531 transitions. [2021-12-07 00:41:55,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-07 00:41:55,818 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:55,819 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:41:55,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-12-07 00:41:56,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:41:56,020 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-07 00:41:56,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:56,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1780245134, now seen corresponding path program 2 times [2021-12-07 00:41:56,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:41:56,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1230574739] [2021-12-07 00:41:56,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:41:56,023 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:41:56,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:41:56,025 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:41:56,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-12-07 00:41:56,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-07 00:41:56,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:41:56,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-07 00:41:56,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:41:56,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:41:56,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:41:56,896 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:41:56,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1230574739] [2021-12-07 00:41:56,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1230574739] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:56,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:56,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:41:56,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774605578] [2021-12-07 00:41:56,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:56,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:41:56,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:41:56,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:41:56,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:41:56,897 INFO L87 Difference]: Start difference. First operand 561 states and 1531 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:56,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:56,936 INFO L93 Difference]: Finished difference Result 563 states and 1537 transitions. [2021-12-07 00:41:56,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:41:56,936 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-07 00:41:56,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:56,938 INFO L225 Difference]: With dead ends: 563 [2021-12-07 00:41:56,938 INFO L226 Difference]: Without dead ends: 563 [2021-12-07 00:41:56,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:41:56,938 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:56,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 72 Unchecked, 0.0s Time] [2021-12-07 00:41:56,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-12-07 00:41:56,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 560. [2021-12-07 00:41:56,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 546 states have (on average 2.7985347985347984) internal successors, (1528), 559 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:56,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1528 transitions. [2021-12-07 00:41:56,956 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 1528 transitions. Word has length 9 [2021-12-07 00:41:56,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:56,956 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 1528 transitions. [2021-12-07 00:41:56,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:56,957 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 1528 transitions. [2021-12-07 00:41:56,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-07 00:41:56,957 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:56,957 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:41:56,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-12-07 00:41:57,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:41:57,159 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-07 00:41:57,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:57,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1780345574, now seen corresponding path program 3 times [2021-12-07 00:41:57,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:41:57,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1271998460] [2021-12-07 00:41:57,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 00:41:57,163 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:41:57,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:41:57,165 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:41:57,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-12-07 00:41:57,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-12-07 00:41:57,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:41:57,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-07 00:41:57,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:42:00,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:42:00,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:42:00,381 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:42:00,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1271998460] [2021-12-07 00:42:00,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1271998460] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:42:00,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:42:00,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:42:00,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235768744] [2021-12-07 00:42:00,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:42:00,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:42:00,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:42:00,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:42:00,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=20, Unknown=1, NotChecked=0, Total=30 [2021-12-07 00:42:00,382 INFO L87 Difference]: Start difference. First operand 560 states and 1528 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:00,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:42:00,422 INFO L93 Difference]: Finished difference Result 570 states and 1559 transitions. [2021-12-07 00:42:00,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:42:00,423 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-07 00:42:00,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:42:00,424 INFO L225 Difference]: With dead ends: 570 [2021-12-07 00:42:00,424 INFO L226 Difference]: Without dead ends: 570 [2021-12-07 00:42:00,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=9, Invalid=20, Unknown=1, NotChecked=0, Total=30 [2021-12-07 00:42:00,425 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 11 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:42:00,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 66 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 98 Unchecked, 0.0s Time] [2021-12-07 00:42:00,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-12-07 00:42:00,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2021-12-07 00:42:00,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 556 states have (on average 2.803956834532374) internal successors, (1559), 569 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:00,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1559 transitions. [2021-12-07 00:42:00,434 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1559 transitions. Word has length 9 [2021-12-07 00:42:00,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:42:00,434 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 1559 transitions. [2021-12-07 00:42:00,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:00,434 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1559 transitions. [2021-12-07 00:42:00,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-07 00:42:00,435 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:42:00,435 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:42:00,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-12-07 00:42:00,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:42:00,636 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-07 00:42:00,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:42:00,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1780346380, now seen corresponding path program 1 times [2021-12-07 00:42:00,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:42:00,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947621675] [2021-12-07 00:42:00,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:42:00,639 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:42:00,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:42:00,641 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:42:00,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-12-07 00:42:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:00,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-07 00:42:00,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:42:05,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:42:05,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:42:05,581 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:42:05,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947621675] [2021-12-07 00:42:05,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [947621675] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:42:05,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:42:05,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:42:05,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764789451] [2021-12-07 00:42:05,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:42:05,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:42:05,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:42:05,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:42:05,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=19, Unknown=2, NotChecked=0, Total=30 [2021-12-07 00:42:05,582 INFO L87 Difference]: Start difference. First operand 570 states and 1559 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:05,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:42:05,628 INFO L93 Difference]: Finished difference Result 571 states and 1562 transitions. [2021-12-07 00:42:05,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:42:05,628 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-07 00:42:05,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:42:05,630 INFO L225 Difference]: With dead ends: 571 [2021-12-07 00:42:05,630 INFO L226 Difference]: Without dead ends: 571 [2021-12-07 00:42:05,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=9, Invalid=19, Unknown=2, NotChecked=0, Total=30 [2021-12-07 00:42:05,630 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:42:05,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 70 Unchecked, 0.0s Time] [2021-12-07 00:42:05,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-12-07 00:42:05,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2021-12-07 00:42:05,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 557 states have (on average 2.8043087971274687) internal successors, (1562), 570 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:05,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 1562 transitions. [2021-12-07 00:42:05,639 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 1562 transitions. Word has length 9 [2021-12-07 00:42:05,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:42:05,640 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 1562 transitions. [2021-12-07 00:42:05,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:05,640 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 1562 transitions. [2021-12-07 00:42:05,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-07 00:42:05,640 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:42:05,640 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:42:05,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-12-07 00:42:05,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:42:05,842 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-07 00:42:05,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:42:05,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1780302794, now seen corresponding path program 4 times [2021-12-07 00:42:05,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:42:05,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70818580] [2021-12-07 00:42:05,844 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-07 00:42:05,844 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:42:05,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:42:05,847 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:42:05,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-12-07 00:42:05,953 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-07 00:42:05,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:42:05,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-07 00:42:05,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:42:08,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:42:08,824 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:42:08,824 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:42:08,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [70818580] [2021-12-07 00:42:08,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [70818580] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:42:08,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:42:08,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:42:08,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067297305] [2021-12-07 00:42:08,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:42:08,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:42:08,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:42:08,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:42:08,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=20, Unknown=1, NotChecked=0, Total=30 [2021-12-07 00:42:08,825 INFO L87 Difference]: Start difference. First operand 571 states and 1562 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:08,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:42:08,867 INFO L93 Difference]: Finished difference Result 570 states and 1559 transitions. [2021-12-07 00:42:08,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:42:08,868 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-07 00:42:08,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:42:08,869 INFO L225 Difference]: With dead ends: 570 [2021-12-07 00:42:08,869 INFO L226 Difference]: Without dead ends: 570 [2021-12-07 00:42:08,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=9, Invalid=20, Unknown=1, NotChecked=0, Total=30 [2021-12-07 00:42:08,869 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:42:08,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 71 Unchecked, 0.0s Time] [2021-12-07 00:42:08,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-12-07 00:42:08,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 568. [2021-12-07 00:42:08,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 554 states have (on average 2.803249097472924) internal successors, (1553), 567 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:08,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 1553 transitions. [2021-12-07 00:42:08,879 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 1553 transitions. Word has length 9 [2021-12-07 00:42:08,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:42:08,879 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 1553 transitions. [2021-12-07 00:42:08,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:08,879 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 1553 transitions. [2021-12-07 00:42:08,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-07 00:42:08,879 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:42:08,880 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:42:08,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-12-07 00:42:09,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:42:09,081 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-07 00:42:09,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:42:09,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1780327780, now seen corresponding path program 2 times [2021-12-07 00:42:09,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:42:09,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [768217765] [2021-12-07 00:42:09,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:42:09,083 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:42:09,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:42:09,085 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:42:09,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-12-07 00:42:09,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-07 00:42:09,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:42:09,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-07 00:42:09,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:42:14,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:42:14,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:42:14,072 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:42:14,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [768217765] [2021-12-07 00:42:14,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [768217765] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:42:14,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:42:14,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:42:14,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474704370] [2021-12-07 00:42:14,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:42:14,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:42:14,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:42:14,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:42:14,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=19, Unknown=2, NotChecked=0, Total=30 [2021-12-07 00:42:14,074 INFO L87 Difference]: Start difference. First operand 568 states and 1553 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:14,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:42:14,111 INFO L93 Difference]: Finished difference Result 570 states and 1559 transitions. [2021-12-07 00:42:14,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:42:14,111 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-07 00:42:14,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:42:14,112 INFO L225 Difference]: With dead ends: 570 [2021-12-07 00:42:14,112 INFO L226 Difference]: Without dead ends: 570 [2021-12-07 00:42:14,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=9, Invalid=19, Unknown=2, NotChecked=0, Total=30 [2021-12-07 00:42:14,113 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:42:14,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 71 Unchecked, 0.0s Time] [2021-12-07 00:42:14,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-12-07 00:42:14,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 569. [2021-12-07 00:42:14,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 555 states have (on average 2.8036036036036034) internal successors, (1556), 568 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:14,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 1556 transitions. [2021-12-07 00:42:14,122 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 1556 transitions. Word has length 9 [2021-12-07 00:42:14,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:42:14,122 INFO L470 AbstractCegarLoop]: Abstraction has 569 states and 1556 transitions. [2021-12-07 00:42:14,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:14,123 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 1556 transitions. [2021-12-07 00:42:14,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-07 00:42:14,123 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:42:14,123 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:42:14,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-12-07 00:42:14,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:42:14,324 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-07 00:42:14,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:42:14,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1781019700, now seen corresponding path program 3 times [2021-12-07 00:42:14,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:42:14,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1571150577] [2021-12-07 00:42:14,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 00:42:14,327 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:42:14,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:42:14,329 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:42:14,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-12-07 00:42:14,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-12-07 00:42:14,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:42:14,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-07 00:42:14,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:42:19,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:42:19,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:42:19,165 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:42:19,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1571150577] [2021-12-07 00:42:19,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1571150577] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:42:19,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:42:19,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:42:19,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448988436] [2021-12-07 00:42:19,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:42:19,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:42:19,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:42:19,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:42:19,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=19, Unknown=2, NotChecked=0, Total=30 [2021-12-07 00:42:19,167 INFO L87 Difference]: Start difference. First operand 569 states and 1556 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:19,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:42:19,210 INFO L93 Difference]: Finished difference Result 572 states and 1565 transitions. [2021-12-07 00:42:19,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:42:19,210 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-07 00:42:19,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:42:19,212 INFO L225 Difference]: With dead ends: 572 [2021-12-07 00:42:19,212 INFO L226 Difference]: Without dead ends: 572 [2021-12-07 00:42:19,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=9, Invalid=19, Unknown=2, NotChecked=0, Total=30 [2021-12-07 00:42:19,212 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:42:19,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 72 Unchecked, 0.0s Time] [2021-12-07 00:42:19,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-12-07 00:42:19,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 570. [2021-12-07 00:42:19,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 556 states have (on average 2.803956834532374) internal successors, (1559), 569 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:19,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1559 transitions. [2021-12-07 00:42:19,221 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1559 transitions. Word has length 9 [2021-12-07 00:42:19,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:42:19,222 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 1559 transitions. [2021-12-07 00:42:19,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:19,222 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1559 transitions. [2021-12-07 00:42:19,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-07 00:42:19,222 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:42:19,222 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:42:19,230 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2021-12-07 00:42:19,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:42:19,423 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-07 00:42:19,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:42:19,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1741038082, now seen corresponding path program 2 times [2021-12-07 00:42:19,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:42:19,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138568242] [2021-12-07 00:42:19,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:42:19,424 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:42:19,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:42:19,425 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:42:19,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-12-07 00:42:19,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-07 00:42:19,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:42:19,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:42:19,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:42:19,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:42:19,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:42:19,544 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:42:19,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138568242] [2021-12-07 00:42:19,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138568242] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:42:19,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:42:19,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:42:19,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906148035] [2021-12-07 00:42:19,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:42:19,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:42:19,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:42:19,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:42:19,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:42:19,545 INFO L87 Difference]: Start difference. First operand 570 states and 1559 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:19,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:42:19,675 INFO L93 Difference]: Finished difference Result 582 states and 1575 transitions. [2021-12-07 00:42:19,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:42:19,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-07 00:42:19,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:42:19,676 INFO L225 Difference]: With dead ends: 582 [2021-12-07 00:42:19,676 INFO L226 Difference]: Without dead ends: 582 [2021-12-07 00:42:19,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:42:19,677 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 44 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:42:19,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 38 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:42:19,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-12-07 00:42:19,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 564. [2021-12-07 00:42:19,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 550 states have (on average 2.792727272727273) internal successors, (1536), 563 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:19,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 1536 transitions. [2021-12-07 00:42:19,686 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 1536 transitions. Word has length 9 [2021-12-07 00:42:19,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:42:19,686 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 1536 transitions. [2021-12-07 00:42:19,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:19,686 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 1536 transitions. [2021-12-07 00:42:19,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-07 00:42:19,687 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:42:19,687 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:42:19,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-12-07 00:42:19,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:42:19,888 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-07 00:42:19,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:42:19,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1741070632, now seen corresponding path program 3 times [2021-12-07 00:42:19,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:42:19,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2019810985] [2021-12-07 00:42:19,890 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 00:42:19,891 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:42:19,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:42:19,893 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:42:19,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-12-07 00:42:19,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-12-07 00:42:19,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:42:19,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-07 00:42:19,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:42:20,003 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:42:20,004 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:42:20,020 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-12-07 00:42:20,020 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 3 case distinctions, treesize of input 35 treesize of output 42 [2021-12-07 00:42:20,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:42:20,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:42:20,109 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:42:20,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2019810985] [2021-12-07 00:42:20,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2019810985] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:42:20,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:42:20,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-07 00:42:20,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18286195] [2021-12-07 00:42:20,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:42:20,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:42:20,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:42:20,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:42:20,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:42:20,110 INFO L87 Difference]: Start difference. First operand 564 states and 1536 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:20,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:42:20,134 INFO L93 Difference]: Finished difference Result 569 states and 1554 transitions. [2021-12-07 00:42:20,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:42:20,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-07 00:42:20,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:42:20,138 INFO L225 Difference]: With dead ends: 569 [2021-12-07 00:42:20,138 INFO L226 Difference]: Without dead ends: 569 [2021-12-07 00:42:20,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:42:20,139 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 5 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:42:20,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 21 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 23 Unchecked, 0.0s Time] [2021-12-07 00:42:20,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2021-12-07 00:42:20,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 569. [2021-12-07 00:42:20,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 555 states have (on average 2.8) internal successors, (1554), 568 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:20,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 1554 transitions. [2021-12-07 00:42:20,147 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 1554 transitions. Word has length 9 [2021-12-07 00:42:20,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:42:20,148 INFO L470 AbstractCegarLoop]: Abstraction has 569 states and 1554 transitions. [2021-12-07 00:42:20,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:20,148 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 1554 transitions. [2021-12-07 00:42:20,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-07 00:42:20,148 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:42:20,148 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:42:20,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-12-07 00:42:20,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:42:20,349 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-07 00:42:20,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:42:20,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1742589310, now seen corresponding path program 4 times [2021-12-07 00:42:20,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:42:20,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1122859246] [2021-12-07 00:42:20,352 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-07 00:42:20,352 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:42:20,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:42:20,355 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:42:20,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-12-07 00:42:20,467 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-07 00:42:20,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:42:20,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-07 00:42:20,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:42:21,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:42:21,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:42:21,201 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:42:21,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1122859246] [2021-12-07 00:42:21,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1122859246] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:42:21,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:42:21,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:42:21,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949405464] [2021-12-07 00:42:21,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:42:21,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:42:21,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:42:21,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:42:21,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:42:21,202 INFO L87 Difference]: Start difference. First operand 569 states and 1554 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:21,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:42:21,244 INFO L93 Difference]: Finished difference Result 568 states and 1551 transitions. [2021-12-07 00:42:21,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:42:21,244 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-07 00:42:21,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:42:21,246 INFO L225 Difference]: With dead ends: 568 [2021-12-07 00:42:21,246 INFO L226 Difference]: Without dead ends: 568 [2021-12-07 00:42:21,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:42:21,247 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:42:21,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 67 Unchecked, 0.0s Time] [2021-12-07 00:42:21,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-12-07 00:42:21,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 565. [2021-12-07 00:42:21,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 551 states have (on average 2.798548094373866) internal successors, (1542), 564 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:21,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 1542 transitions. [2021-12-07 00:42:21,256 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 1542 transitions. Word has length 9 [2021-12-07 00:42:21,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:42:21,256 INFO L470 AbstractCegarLoop]: Abstraction has 565 states and 1542 transitions. [2021-12-07 00:42:21,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:21,256 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 1542 transitions. [2021-12-07 00:42:21,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-07 00:42:21,257 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:42:21,257 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:42:21,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-12-07 00:42:21,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:42:21,458 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting t1Err1REQUIRES_VIOLATION === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-12-07 00:42:21,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:42:21,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1265797648, now seen corresponding path program 1 times [2021-12-07 00:42:21,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:42:21,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1800052669] [2021-12-07 00:42:21,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:42:21,459 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:42:21,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:42:21,461 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:42:21,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-12-07 00:42:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:42:21,658 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:42:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:42:21,699 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-07 00:42:21,700 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-07 00:42:21,700 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location t1Err1REQUIRES_VIOLATION (17 of 18 remaining) [2021-12-07 00:42:21,702 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (16 of 18 remaining) [2021-12-07 00:42:21,702 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (15 of 18 remaining) [2021-12-07 00:42:21,702 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (14 of 18 remaining) [2021-12-07 00:42:21,702 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (13 of 18 remaining) [2021-12-07 00:42:21,702 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (12 of 18 remaining) [2021-12-07 00:42:21,702 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (11 of 18 remaining) [2021-12-07 00:42:21,702 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE (10 of 18 remaining) [2021-12-07 00:42:21,702 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE (9 of 18 remaining) [2021-12-07 00:42:21,703 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (8 of 18 remaining) [2021-12-07 00:42:21,703 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (7 of 18 remaining) [2021-12-07 00:42:21,703 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATION (6 of 18 remaining) [2021-12-07 00:42:21,703 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATION (5 of 18 remaining) [2021-12-07 00:42:21,703 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATION (4 of 18 remaining) [2021-12-07 00:42:21,703 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATION (3 of 18 remaining) [2021-12-07 00:42:21,703 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATION (2 of 18 remaining) [2021-12-07 00:42:21,703 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATION (1 of 18 remaining) [2021-12-07 00:42:21,703 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATION (0 of 18 remaining) [2021-12-07 00:42:21,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2021-12-07 00:42:21,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:42:21,908 INFO L732 BasicCegarLoop]: Path program histogram: [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:42:21,917 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-07 00:42:21,917 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-07 00:42:21,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 12:42:21 BasicIcfg [2021-12-07 00:42:21,965 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-07 00:42:21,965 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-07 00:42:21,965 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-07 00:42:21,965 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-07 00:42:21,966 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:41:34" (3/4) ... [2021-12-07 00:42:21,967 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-07 00:42:21,996 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-07 00:42:21,996 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-07 00:42:21,996 INFO L158 Benchmark]: Toolchain (without parser) took 48527.25ms. Allocated memory was 56.6MB in the beginning and 144.7MB in the end (delta: 88.1MB). Free memory was 32.5MB in the beginning and 46.5MB in the end (delta: -14.0MB). Peak memory consumption was 73.1MB. Max. memory is 16.1GB. [2021-12-07 00:42:21,996 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 56.6MB. Free memory is still 36.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 00:42:21,997 INFO L158 Benchmark]: CACSL2BoogieTranslator took 449.37ms. Allocated memory was 56.6MB in the beginning and 81.8MB in the end (delta: 25.2MB). Free memory was 32.3MB in the beginning and 60.9MB in the end (delta: -28.5MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. [2021-12-07 00:42:21,997 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.99ms. Allocated memory is still 81.8MB. Free memory was 60.9MB in the beginning and 58.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 00:42:21,997 INFO L158 Benchmark]: Boogie Preprocessor took 24.05ms. Allocated memory is still 81.8MB. Free memory was 58.4MB in the beginning and 56.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 00:42:21,997 INFO L158 Benchmark]: RCFGBuilder took 366.93ms. Allocated memory is still 81.8MB. Free memory was 56.7MB in the beginning and 42.5MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-07 00:42:21,998 INFO L158 Benchmark]: TraceAbstraction took 47615.50ms. Allocated memory was 81.8MB in the beginning and 144.7MB in the end (delta: 62.9MB). Free memory was 42.0MB in the beginning and 49.6MB in the end (delta: -7.6MB). Peak memory consumption was 54.6MB. Max. memory is 16.1GB. [2021-12-07 00:42:21,998 INFO L158 Benchmark]: Witness Printer took 30.87ms. Allocated memory is still 144.7MB. Free memory was 49.6MB in the beginning and 46.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 00:42:21,999 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 56.6MB. Free memory is still 36.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 449.37ms. Allocated memory was 56.6MB in the beginning and 81.8MB in the end (delta: 25.2MB). Free memory was 32.3MB in the beginning and 60.9MB in the end (delta: -28.5MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.99ms. Allocated memory is still 81.8MB. Free memory was 60.9MB in the beginning and 58.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.05ms. Allocated memory is still 81.8MB. Free memory was 58.4MB in the beginning and 56.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 366.93ms. Allocated memory is still 81.8MB. Free memory was 56.7MB in the beginning and 42.5MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 47615.50ms. Allocated memory was 81.8MB in the beginning and 144.7MB in the end (delta: 62.9MB). Free memory was 42.0MB in the beginning and 49.6MB in the end (delta: -7.6MB). Peak memory consumption was 54.6MB. Max. memory is 16.1GB. * Witness Printer took 30.87ms. Allocated memory is still 144.7MB. Free memory was 49.6MB in the beginning and 46.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.7s, 103 PlacesBefore, 45 PlacesAfterwards, 105 TransitionsBefore, 45 TransitionsAfterwards, 2546 CoEnabledTransitionPairs, 7 FixpointIterations, 41 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 86 TotalNumberOfCompositions, 7972 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2983, positive: 2730, positive conditional: 0, positive unconditional: 2730, negative: 253, negative conditional: 0, negative unconditional: 253, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1339, positive: 1302, positive conditional: 0, positive unconditional: 1302, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1339, positive: 1290, positive conditional: 0, positive unconditional: 1290, negative: 49, negative conditional: 0, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 49, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 408, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 389, negative conditional: 0, negative unconditional: 389, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2983, positive: 1428, positive conditional: 0, positive unconditional: 1428, negative: 216, negative conditional: 0, negative unconditional: 216, unknown: 1339, unknown conditional: 0, unknown unconditional: 1339] , Statistics on independence cache: Total cache size (in pairs): 201, Positive cache size: 176, Positive conditional cache size: 0, Positive unconditional cache size: 176, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1049]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L1037] 0 int size; [L1038] 0 int ind; [L1039] 0 int j = 2, i = 1; [L1040] 0 int x, y, z; [L1068] 0 size = __VERIFIER_nondet_int() [L1069] COND FALSE 0 !(size < 1 || size > 20) [L1072] 0 int *a = (int *)malloc(size); [L1073] 0 pthread_t id1, id2; [L1074] 0 ind = 0 [L1075] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, a) VAL [\old(argc)=5, a={1:0}, arg={1:0}, argc=5, argv={9:6}, argv={9:6}, i=1, id1={7:0}, id2={3:0}, ind=0, j=2, pthread_create(&id1, ((void *)0), t1, a)=-1, size=2, x=0, y=0, z=0] [L1042] 1 x = 1 VAL [arg={1:0}, arg={1:0}, i=1, ind=0, j=2, size=2, x=1, y=0, z=0] [L1043] 1 y = 1 [L1044] 1 int *a = (int *)arg; VAL [a={1:0}, arg={1:0}, arg={1:0}, i=1, ind=0, j=2, size=2, x=1, y=1, z=0] [L1045] COND FALSE 1 !(y == 1 && z) VAL [a={1:0}, arg={1:0}, arg={1:0}, i=1, ind=0, j=2, size=2, x=1, y=1, z=0] [L1047] COND TRUE 1 ind < size - 1 VAL [a={1:0}, arg={1:0}, arg={1:0}, i=1, ind=0, j=2, size=2, x=1, y=1, z=0] [L1048] 1 ++ind [L1049] 1 a[ind] = i - UnprovableResult [Line: 1067]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1075]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1075]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1076]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1076]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1077]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1077]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1077]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1075]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1076]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 131 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 47.5s, OverallIterations: 32, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.8s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 314 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 314 mSDsluCounter, 965 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 959 IncrementalHoareTripleChecker+Unchecked, 1073 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 812 IncrementalHoareTripleChecker+Invalid, 1776 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 384 mSDtfsCounter, 812 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 192 GetRequests, 129 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1135occurred in iteration=0, InterpolantAutomatonStates: 122, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 31 MinimizatonAttempts, 29 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 27.6s InterpolantComputationTime, 232 NumberOfCodeBlocks, 232 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 192 ConstructedInterpolants, 155 QuantifiedInterpolants, 8653 SizeOfPredicates, 48 NumberOfNonLiveVariables, 2338 ConjunctsInSsa, 282 ConjunctsInUnsatCore, 31 InterpolantComputations, 31 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-07 00:42:22,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ba1d608-a10e-4bda-852d-53bc6f6f70e5/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)