./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 a37ff9cc75e7eb9f5325f8fa274b6f05ade1742d661d8f4c826631afb9b4bde2 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 08:48:40,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 08:48:40,623 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 08:48:40,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 08:48:40,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 08:48:40,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 08:48:40,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 08:48:40,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 08:48:40,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 08:48:40,695 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 08:48:40,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 08:48:40,697 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 08:48:40,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 08:48:40,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 08:48:40,700 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 08:48:40,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 08:48:40,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 08:48:40,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 08:48:40,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 08:48:40,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 08:48:40,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 08:48:40,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 08:48:40,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 08:48:40,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 08:48:40,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 08:48:40,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 08:48:40,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 08:48:40,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 08:48:40,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 08:48:40,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 08:48:40,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 08:48:40,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 08:48:40,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 08:48:40,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 08:48:40,724 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 08:48:40,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 08:48:40,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 08:48:40,725 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 08:48:40,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 08:48:40,726 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 08:48:40,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 08:48:40,727 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-16 08:48:40,756 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 08:48:40,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 08:48:40,757 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 08:48:40,757 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 08:48:40,758 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 08:48:40,758 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 08:48:40,758 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 08:48:40,759 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 08:48:40,759 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 08:48:40,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 08:48:40,760 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 08:48:40,760 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 08:48:40,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 08:48:40,760 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 08:48:40,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 08:48:40,760 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-16 08:48:40,761 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-16 08:48:40,761 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-16 08:48:40,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 08:48:40,761 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-16 08:48:40,761 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 08:48:40,761 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 08:48:40,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 08:48:40,762 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 08:48:40,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 08:48:40,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 08:48:40,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 08:48:40,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 08:48:40,763 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 08:48:40,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 08:48:40,764 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 08:48:40,764 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a37ff9cc75e7eb9f5325f8fa274b6f05ade1742d661d8f4c826631afb9b4bde2 [2021-12-16 08:48:40,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 08:48:40,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 08:48:40,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 08:48:40,966 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 08:48:40,966 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 08:48:40,967 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i [2021-12-16 08:48:41,008 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb299c3f0/90ac7222b1be416b9ebd78daa6a92f3c/FLAG557710da0 [2021-12-16 08:48:41,479 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 08:48:41,480 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i [2021-12-16 08:48:41,496 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb299c3f0/90ac7222b1be416b9ebd78daa6a92f3c/FLAG557710da0 [2021-12-16 08:48:41,509 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb299c3f0/90ac7222b1be416b9ebd78daa6a92f3c [2021-12-16 08:48:41,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 08:48:41,511 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 08:48:41,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 08:48:41,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 08:48:41,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 08:48:41,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:48:41" (1/1) ... [2021-12-16 08:48:41,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347ef578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:48:41, skipping insertion in model container [2021-12-16 08:48:41,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:48:41" (1/1) ... [2021-12-16 08:48:41,521 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 08:48:41,564 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 08:48:41,876 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i[33021,33034] [2021-12-16 08:48:41,996 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i[49681,49694] [2021-12-16 08:48:42,022 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 08:48:42,028 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) [2021-12-16 08:48:42,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6772ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:48:42, skipping insertion in model container [2021-12-16 08:48:42,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 08:48:42,029 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-16 08:48:42,030 INFO L158 Benchmark]: Toolchain (without parser) took 517.84ms. Allocated memory was 102.8MB in the beginning and 138.4MB in the end (delta: 35.7MB). Free memory was 69.5MB in the beginning and 99.2MB in the end (delta: -29.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-16 08:48:42,030 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 102.8MB. Free memory was 59.8MB in the beginning and 59.8MB in the end (delta: 38.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 08:48:42,031 INFO L158 Benchmark]: CACSL2BoogieTranslator took 515.81ms. Allocated memory was 102.8MB in the beginning and 138.4MB in the end (delta: 35.7MB). Free memory was 69.5MB in the beginning and 99.2MB in the end (delta: -29.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-16 08:48:42,032 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 102.8MB. Free memory was 59.8MB in the beginning and 59.8MB in the end (delta: 38.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 515.81ms. Allocated memory was 102.8MB in the beginning and 138.4MB in the end (delta: 35.7MB). Free memory was 69.5MB in the beginning and 99.2MB in the end (delta: -29.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 737]: 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=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 a37ff9cc75e7eb9f5325f8fa274b6f05ade1742d661d8f4c826631afb9b4bde2 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 08:48:43,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 08:48:43,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 08:48:43,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 08:48:43,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 08:48:43,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 08:48:43,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 08:48:43,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 08:48:43,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 08:48:43,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 08:48:43,657 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 08:48:43,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 08:48:43,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 08:48:43,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 08:48:43,661 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 08:48:43,664 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 08:48:43,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 08:48:43,665 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 08:48:43,668 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 08:48:43,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 08:48:43,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 08:48:43,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 08:48:43,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 08:48:43,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 08:48:43,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 08:48:43,681 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 08:48:43,681 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 08:48:43,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 08:48:43,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 08:48:43,683 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 08:48:43,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 08:48:43,683 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 08:48:43,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 08:48:43,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 08:48:43,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 08:48:43,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 08:48:43,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 08:48:43,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 08:48:43,687 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 08:48:43,688 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 08:48:43,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 08:48:43,689 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-16 08:48:43,715 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 08:48:43,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 08:48:43,716 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 08:48:43,716 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 08:48:43,717 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 08:48:43,717 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 08:48:43,718 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 08:48:43,718 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 08:48:43,718 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 08:48:43,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 08:48:43,719 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 08:48:43,719 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 08:48:43,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 08:48:43,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 08:48:43,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 08:48:43,719 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-16 08:48:43,720 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-16 08:48:43,720 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-16 08:48:43,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 08:48:43,720 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-16 08:48:43,720 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-16 08:48:43,720 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-16 08:48:43,721 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 08:48:43,721 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 08:48:43,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 08:48:43,721 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 08:48:43,721 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 08:48:43,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 08:48:43,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 08:48:43,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 08:48:43,722 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-16 08:48:43,722 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-16 08:48:43,722 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 08:48:43,722 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-16 08:48:43,723 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a37ff9cc75e7eb9f5325f8fa274b6f05ade1742d661d8f4c826631afb9b4bde2 [2021-12-16 08:48:44,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 08:48:44,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 08:48:44,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 08:48:44,018 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 08:48:44,019 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 08:48:44,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i [2021-12-16 08:48:44,061 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f092560d4/bcb7401796954524a0c1e4187a9ae668/FLAG56a141e2c [2021-12-16 08:48:44,533 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 08:48:44,533 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i [2021-12-16 08:48:44,558 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f092560d4/bcb7401796954524a0c1e4187a9ae668/FLAG56a141e2c [2021-12-16 08:48:44,837 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f092560d4/bcb7401796954524a0c1e4187a9ae668 [2021-12-16 08:48:44,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 08:48:44,842 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 08:48:44,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 08:48:44,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 08:48:44,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 08:48:44,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:48:44" (1/1) ... [2021-12-16 08:48:44,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e57cfc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:48:44, skipping insertion in model container [2021-12-16 08:48:44,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:48:44" (1/1) ... [2021-12-16 08:48:44,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 08:48:44,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 08:48:45,223 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i[33021,33034] [2021-12-16 08:48:45,346 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i[49681,49694] [2021-12-16 08:48:45,382 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 08:48:45,393 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-16 08:48:45,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 08:48:45,419 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i[33021,33034] [2021-12-16 08:48:45,462 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i[49681,49694] [2021-12-16 08:48:45,470 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 08:48:45,474 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 08:48:45,493 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i[33021,33034] [2021-12-16 08:48:45,553 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i[49681,49694] [2021-12-16 08:48:45,565 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 08:48:45,592 INFO L208 MainTranslator]: Completed translation [2021-12-16 08:48:45,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:48:45 WrapperNode [2021-12-16 08:48:45,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 08:48:45,594 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 08:48:45,594 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 08:48:45,594 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 08:48:45,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:48:45" (1/1) ... [2021-12-16 08:48:45,637 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:48:45" (1/1) ... [2021-12-16 08:48:45,696 INFO L137 Inliner]: procedures = 180, calls = 487, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1721 [2021-12-16 08:48:45,697 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 08:48:45,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 08:48:45,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 08:48:45,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 08:48:45,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:48:45" (1/1) ... [2021-12-16 08:48:45,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:48:45" (1/1) ... [2021-12-16 08:48:45,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:48:45" (1/1) ... [2021-12-16 08:48:45,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:48:45" (1/1) ... [2021-12-16 08:48:45,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:48:45" (1/1) ... [2021-12-16 08:48:45,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:48:45" (1/1) ... [2021-12-16 08:48:45,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:48:45" (1/1) ... [2021-12-16 08:48:45,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 08:48:45,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 08:48:45,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 08:48:45,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 08:48:45,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:48:45" (1/1) ... [2021-12-16 08:48:45,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 08:48:45,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 08:48:45,824 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 08:48:45,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 08:48:45,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-16 08:48:45,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-16 08:48:45,850 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-16 08:48:45,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-16 08:48:45,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-16 08:48:45,851 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-16 08:48:45,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 08:48:45,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 08:48:45,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 08:48:45,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 08:48:45,851 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-16 08:48:45,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 08:48:45,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 08:48:45,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-16 08:48:45,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-16 08:48:45,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 08:48:45,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 08:48:46,072 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 08:48:46,073 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 08:48:46,075 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 08:48:50,295 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 08:48:50,306 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 08:48:50,306 INFO L301 CfgBuilder]: Removed 100 assume(true) statements. [2021-12-16 08:48:50,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 08:48:50 BoogieIcfgContainer [2021-12-16 08:48:50,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 08:48:50,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 08:48:50,311 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 08:48:50,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 08:48:50,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 08:48:44" (1/3) ... [2021-12-16 08:48:50,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d30a4bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 08:48:50, skipping insertion in model container [2021-12-16 08:48:50,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:48:45" (2/3) ... [2021-12-16 08:48:50,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d30a4bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 08:48:50, skipping insertion in model container [2021-12-16 08:48:50,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 08:48:50" (3/3) ... [2021-12-16 08:48:50,317 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test5-3.i [2021-12-16 08:48:50,321 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 08:48:50,321 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 932 error locations. [2021-12-16 08:48:50,354 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 08:48:50,361 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 [2021-12-16 08:48:50,362 INFO L340 AbstractCegarLoop]: Starting to check reachability of 932 error locations. [2021-12-16 08:48:50,395 INFO L276 IsEmpty]: Start isEmpty. Operand has 1833 states, 893 states have (on average 2.2642777155655094) internal successors, (2022), 1824 states have internal predecessors, (2022), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-16 08:48:50,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-16 08:48:50,400 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:48:50,400 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-16 08:48:50,401 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-12-16 08:48:50,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:48:50,404 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2021-12-16 08:48:50,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:48:50,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [329103838] [2021-12-16 08:48:50,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:48:50,413 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:48:50,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:48:50,415 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:48:50,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-16 08:48:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:48:50,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-16 08:48:50,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:48:50,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:48:50,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:48:50,660 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:48:50,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [329103838] [2021-12-16 08:48:50,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [329103838] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:48:50,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:48:50,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 08:48:50,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154489424] [2021-12-16 08:48:50,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:48:50,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 08:48:50,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:48:50,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 08:48:50,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 08:48:50,696 INFO L87 Difference]: Start difference. First operand has 1833 states, 893 states have (on average 2.2642777155655094) internal successors, (2022), 1824 states have internal predecessors, (2022), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 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) [2021-12-16 08:48:50,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:48:50,790 INFO L93 Difference]: Finished difference Result 1815 states and 1917 transitions. [2021-12-16 08:48:50,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 08:48:50,792 INFO L78 Accepts]: Start accepts. Automaton has has 2 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 [2021-12-16 08:48:50,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:48:50,812 INFO L225 Difference]: With dead ends: 1815 [2021-12-16 08:48:50,813 INFO L226 Difference]: Without dead ends: 1813 [2021-12-16 08:48:50,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 08:48:50,818 INFO L933 BasicCegarLoop]: 1917 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1917 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:48:50,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1917 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 08:48:50,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1813 states. [2021-12-16 08:48:50,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1813 to 1813. [2021-12-16 08:48:50,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 884 states have (on average 2.1414027149321266) internal successors, (1893), 1804 states have internal predecessors, (1893), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-16 08:48:50,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 1915 transitions. [2021-12-16 08:48:50,906 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 1915 transitions. Word has length 5 [2021-12-16 08:48:50,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:48:50,906 INFO L470 AbstractCegarLoop]: Abstraction has 1813 states and 1915 transitions. [2021-12-16 08:48:50,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 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) [2021-12-16 08:48:50,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 1915 transitions. [2021-12-16 08:48:50,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-16 08:48:50,907 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:48:50,907 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-16 08:48:50,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-16 08:48:51,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:48:51,114 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-12-16 08:48:51,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:48:51,115 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2021-12-16 08:48:51,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:48:51,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1870399604] [2021-12-16 08:48:51,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:48:51,116 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:48:51,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:48:51,117 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:48:51,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-16 08:48:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:48:51,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 08:48:51,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:48:51,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:48:51,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:48:51,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:48:51,304 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:48:51,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1870399604] [2021-12-16 08:48:51,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1870399604] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:48:51,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:48:51,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 08:48:51,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472929100] [2021-12-16 08:48:51,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:48:51,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 08:48:51,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:48:51,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 08:48:51,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:48:51,314 INFO L87 Difference]: Start difference. First operand 1813 states and 1915 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2021-12-16 08:48:53,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:48:53,324 INFO L93 Difference]: Finished difference Result 2069 states and 2214 transitions. [2021-12-16 08:48:53,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 08:48:53,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2021-12-16 08:48:53,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:48:53,329 INFO L225 Difference]: With dead ends: 2069 [2021-12-16 08:48:53,329 INFO L226 Difference]: Without dead ends: 2069 [2021-12-16 08:48:53,329 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 [2021-12-16 08:48:53,330 INFO L933 BasicCegarLoop]: 1354 mSDtfsCounter, 1369 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-16 08:48:53,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1380 Valid, 1809 Invalid, 1187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-16 08:48:53,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2021-12-16 08:48:53,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1798. [2021-12-16 08:48:53,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 960 states have (on average 2.017708333333333) internal successors, (1937), 1789 states have internal predecessors, (1937), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-16 08:48:53,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 1959 transitions. [2021-12-16 08:48:53,382 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 1959 transitions. Word has length 5 [2021-12-16 08:48:53,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:48:53,383 INFO L470 AbstractCegarLoop]: Abstraction has 1798 states and 1959 transitions. [2021-12-16 08:48:53,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2021-12-16 08:48:53,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 1959 transitions. [2021-12-16 08:48:53,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-16 08:48:53,384 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:48:53,384 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-16 08:48:53,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-16 08:48:53,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:48:53,591 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-12-16 08:48:53,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:48:53,592 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2021-12-16 08:48:53,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:48:53,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623142983] [2021-12-16 08:48:53,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:48:53,594 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:48:53,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:48:53,605 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:48:53,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-16 08:48:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:48:53,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 08:48:53,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:48:53,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:48:53,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:48:53,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:48:53,758 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:48:53,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623142983] [2021-12-16 08:48:53,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623142983] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:48:53,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:48:53,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 08:48:53,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482223885] [2021-12-16 08:48:53,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:48:53,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 08:48:53,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:48:53,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 08:48:53,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:48:53,760 INFO L87 Difference]: Start difference. First operand 1798 states and 1959 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2021-12-16 08:48:56,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:48:56,590 INFO L93 Difference]: Finished difference Result 2318 states and 2529 transitions. [2021-12-16 08:48:56,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 08:48:56,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2021-12-16 08:48:56,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:48:56,597 INFO L225 Difference]: With dead ends: 2318 [2021-12-16 08:48:56,597 INFO L226 Difference]: Without dead ends: 2318 [2021-12-16 08:48:56,598 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 [2021-12-16 08:48:56,598 INFO L933 BasicCegarLoop]: 1746 mSDtfsCounter, 741 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-16 08:48:56,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [746 Valid, 2548 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1158 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-16 08:48:56,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2021-12-16 08:48:56,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 1954. [2021-12-16 08:48:56,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1954 states, 1126 states have (on average 1.992007104795737) internal successors, (2243), 1945 states have internal predecessors, (2243), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-16 08:48:56,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 2265 transitions. [2021-12-16 08:48:56,626 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 2265 transitions. Word has length 5 [2021-12-16 08:48:56,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:48:56,626 INFO L470 AbstractCegarLoop]: Abstraction has 1954 states and 2265 transitions. [2021-12-16 08:48:56,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2021-12-16 08:48:56,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 2265 transitions. [2021-12-16 08:48:56,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-16 08:48:56,626 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:48:56,627 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-16 08:48:56,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-16 08:48:56,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:48:56,836 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-12-16 08:48:56,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:48:56,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1157601995, now seen corresponding path program 1 times [2021-12-16 08:48:56,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:48:56,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1153011138] [2021-12-16 08:48:56,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:48:56,838 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:48:56,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:48:56,839 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:48:56,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-16 08:48:56,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:48:56,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 08:48:56,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:48:56,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:48:56,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:48:56,985 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:48:56,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1153011138] [2021-12-16 08:48:56,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1153011138] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:48:56,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:48:56,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 08:48:56,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625399745] [2021-12-16 08:48:56,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:48:56,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 08:48:56,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:48:56,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 08:48:56,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:48:56,990 INFO L87 Difference]: Start difference. First operand 1954 states and 2265 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2021-12-16 08:48:57,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:48:57,081 INFO L93 Difference]: Finished difference Result 3514 states and 4117 transitions. [2021-12-16 08:48:57,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 08:48:57,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 [2021-12-16 08:48:57,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:48:57,094 INFO L225 Difference]: With dead ends: 3514 [2021-12-16 08:48:57,094 INFO L226 Difference]: Without dead ends: 3514 [2021-12-16 08:48:57,094 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 [2021-12-16 08:48:57,096 INFO L933 BasicCegarLoop]: 2266 mSDtfsCounter, 1377 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 4069 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 08:48:57,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1388 Valid, 4069 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 08:48:57,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3514 states. [2021-12-16 08:48:57,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3514 to 1956. [2021-12-16 08:48:57,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1956 states, 1128 states have (on average 1.9902482269503545) internal successors, (2245), 1947 states have internal predecessors, (2245), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-16 08:48:57,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1956 states to 1956 states and 2267 transitions. [2021-12-16 08:48:57,157 INFO L78 Accepts]: Start accepts. Automaton has 1956 states and 2267 transitions. Word has length 6 [2021-12-16 08:48:57,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:48:57,157 INFO L470 AbstractCegarLoop]: Abstraction has 1956 states and 2267 transitions. [2021-12-16 08:48:57,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2021-12-16 08:48:57,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1956 states and 2267 transitions. [2021-12-16 08:48:57,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-16 08:48:57,159 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:48:57,159 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:48:57,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-16 08:48:57,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:48:57,366 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-12-16 08:48:57,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:48:57,367 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2021-12-16 08:48:57,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:48:57,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [198708711] [2021-12-16 08:48:57,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:48:57,368 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:48:57,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:48:57,369 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:48:57,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-16 08:48:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:48:57,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 08:48:57,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:48:57,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:48:57,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:48:57,551 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:48:57,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [198708711] [2021-12-16 08:48:57,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [198708711] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:48:57,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:48:57,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 08:48:57,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584999255] [2021-12-16 08:48:57,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:48:57,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 08:48:57,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:48:57,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 08:48:57,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:48:57,554 INFO L87 Difference]: Start difference. First operand 1956 states and 2267 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:48:57,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:48:57,581 INFO L93 Difference]: Finished difference Result 1920 states and 2230 transitions. [2021-12-16 08:48:57,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 08:48:57,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-16 08:48:57,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:48:57,586 INFO L225 Difference]: With dead ends: 1920 [2021-12-16 08:48:57,586 INFO L226 Difference]: Without dead ends: 1920 [2021-12-16 08:48:57,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:48:57,587 INFO L933 BasicCegarLoop]: 1766 mSDtfsCounter, 1736 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1747 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:48:57,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1747 Valid, 1794 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 08:48:57,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1920 states. [2021-12-16 08:48:57,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1920 to 1914. [2021-12-16 08:48:57,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1914 states, 1110 states have (on average 1.9837837837837837) internal successors, (2202), 1905 states have internal predecessors, (2202), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-16 08:48:57,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2224 transitions. [2021-12-16 08:48:57,612 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2224 transitions. Word has length 11 [2021-12-16 08:48:57,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:48:57,612 INFO L470 AbstractCegarLoop]: Abstraction has 1914 states and 2224 transitions. [2021-12-16 08:48:57,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 08:48:57,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2224 transitions. [2021-12-16 08:48:57,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-16 08:48:57,613 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:48:57,613 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:48:57,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-16 08:48:57,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:48:57,821 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-12-16 08:48:57,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:48:57,821 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2021-12-16 08:48:57,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:48:57,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [526448561] [2021-12-16 08:48:57,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:48:57,822 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:48:57,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:48:57,836 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:48:57,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-16 08:48:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:48:58,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 08:48:58,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:48:58,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:48:58,043 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:48:58,043 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:48:58,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [526448561] [2021-12-16 08:48:58,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [526448561] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:48:58,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:48:58,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 08:48:58,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422414431] [2021-12-16 08:48:58,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:48:58,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:48:58,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:48:58,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:48:58,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:48:58,045 INFO L87 Difference]: Start difference. First operand 1914 states and 2224 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-12-16 08:48:58,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:48:58,106 INFO L93 Difference]: Finished difference Result 1899 states and 2202 transitions. [2021-12-16 08:48:58,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 08:48:58,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2021-12-16 08:48:58,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:48:58,111 INFO L225 Difference]: With dead ends: 1899 [2021-12-16 08:48:58,111 INFO L226 Difference]: Without dead ends: 1899 [2021-12-16 08:48:58,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 08:48:58,112 INFO L933 BasicCegarLoop]: 1721 mSDtfsCounter, 1707 mSDsluCounter, 1742 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1718 SdHoareTripleChecker+Valid, 3463 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:48:58,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1718 Valid, 3463 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 08:48:58,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2021-12-16 08:48:58,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1892. [2021-12-16 08:48:58,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1892 states, 1102 states have (on average 1.971869328493648) internal successors, (2173), 1883 states have internal predecessors, (2173), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-16 08:48:58,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 2195 transitions. [2021-12-16 08:48:58,150 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 2195 transitions. Word has length 13 [2021-12-16 08:48:58,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:48:58,150 INFO L470 AbstractCegarLoop]: Abstraction has 1892 states and 2195 transitions. [2021-12-16 08:48:58,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-12-16 08:48:58,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 2195 transitions. [2021-12-16 08:48:58,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-16 08:48:58,151 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:48:58,151 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:48:58,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-16 08:48:58,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:48:58,359 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-12-16 08:48:58,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:48:58,360 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2021-12-16 08:48:58,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:48:58,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1119607252] [2021-12-16 08:48:58,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:48:58,360 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:48:58,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:48:58,361 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:48:58,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-16 08:48:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:48:58,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 08:48:58,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:48:58,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:48:58,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:48:58,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:48:58,587 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:48:58,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1119607252] [2021-12-16 08:48:58,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1119607252] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:48:58,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:48:58,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 08:48:58,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099269194] [2021-12-16 08:48:58,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:48:58,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:48:58,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:48:58,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:48:58,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:48:58,588 INFO L87 Difference]: Start difference. First operand 1892 states and 2195 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-12-16 08:49:01,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:49:01,929 INFO L93 Difference]: Finished difference Result 3106 states and 3455 transitions. [2021-12-16 08:49:01,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 08:49:01,929 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2021-12-16 08:49:01,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:49:01,937 INFO L225 Difference]: With dead ends: 3106 [2021-12-16 08:49:01,937 INFO L226 Difference]: Without dead ends: 3106 [2021-12-16 08:49:01,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 08:49:01,939 INFO L933 BasicCegarLoop]: 1071 mSDtfsCounter, 3382 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 2085 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3390 SdHoareTripleChecker+Valid, 2422 SdHoareTripleChecker+Invalid, 2134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 2085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-16 08:49:01,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3390 Valid, 2422 Invalid, 2134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 2085 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-16 08:49:01,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3106 states. [2021-12-16 08:49:01,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3106 to 1888. [2021-12-16 08:49:01,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1102 states have (on average 1.9682395644283122) internal successors, (2169), 1879 states have internal predecessors, (2169), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-16 08:49:01,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 2191 transitions. [2021-12-16 08:49:01,968 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 2191 transitions. Word has length 27 [2021-12-16 08:49:01,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:49:01,969 INFO L470 AbstractCegarLoop]: Abstraction has 1888 states and 2191 transitions. [2021-12-16 08:49:01,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-12-16 08:49:01,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 2191 transitions. [2021-12-16 08:49:01,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-16 08:49:01,970 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:49:01,970 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:49:01,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-16 08:49:02,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:49:02,177 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-12-16 08:49:02,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:49:02,179 INFO L85 PathProgramCache]: Analyzing trace with hash -22216186, now seen corresponding path program 1 times [2021-12-16 08:49:02,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:49:02,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1161412535] [2021-12-16 08:49:02,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:49:02,180 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:49:02,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:49:02,181 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:49:02,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-16 08:49:02,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:49:02,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 08:49:02,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:49:02,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:49:02,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:49:02,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:49:02,504 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:49:02,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1161412535] [2021-12-16 08:49:02,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1161412535] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:49:02,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:49:02,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 08:49:02,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637274479] [2021-12-16 08:49:02,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:49:02,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:49:02,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:49:02,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:49:02,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:49:02,506 INFO L87 Difference]: Start difference. First operand 1888 states and 2191 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-12-16 08:49:06,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:49:06,585 INFO L93 Difference]: Finished difference Result 2634 states and 2855 transitions. [2021-12-16 08:49:06,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 08:49:06,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2021-12-16 08:49:06,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:49:06,591 INFO L225 Difference]: With dead ends: 2634 [2021-12-16 08:49:06,591 INFO L226 Difference]: Without dead ends: 2634 [2021-12-16 08:49:06,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 08:49:06,592 INFO L933 BasicCegarLoop]: 1272 mSDtfsCounter, 1687 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 2133 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1687 SdHoareTripleChecker+Valid, 2885 SdHoareTripleChecker+Invalid, 2147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:49:06,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1687 Valid, 2885 Invalid, 2147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2133 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-12-16 08:49:06,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2021-12-16 08:49:06,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 1884. [2021-12-16 08:49:06,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1884 states, 1102 states have (on average 1.9646098003629764) internal successors, (2165), 1875 states have internal predecessors, (2165), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-16 08:49:06,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 2187 transitions. [2021-12-16 08:49:06,614 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 2187 transitions. Word has length 27 [2021-12-16 08:49:06,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:49:06,615 INFO L470 AbstractCegarLoop]: Abstraction has 1884 states and 2187 transitions. [2021-12-16 08:49:06,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-12-16 08:49:06,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 2187 transitions. [2021-12-16 08:49:06,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-16 08:49:06,616 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:49:06,616 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:49:06,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-16 08:49:06,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:49:06,823 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-12-16 08:49:06,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:49:06,824 INFO L85 PathProgramCache]: Analyzing trace with hash 810363537, now seen corresponding path program 1 times [2021-12-16 08:49:06,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:49:06,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [460576805] [2021-12-16 08:49:06,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:49:06,825 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:49:06,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:49:06,826 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:49:06,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-16 08:49:07,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:49:07,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 08:49:07,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:49:07,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:49:07,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:49:07,095 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:49:07,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [460576805] [2021-12-16 08:49:07,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [460576805] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:49:07,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:49:07,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 08:49:07,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064932299] [2021-12-16 08:49:07,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:49:07,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:49:07,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:49:07,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:49:07,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:49:07,097 INFO L87 Difference]: Start difference. First operand 1884 states and 2187 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2021-12-16 08:49:07,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:49:07,135 INFO L93 Difference]: Finished difference Result 1884 states and 2183 transitions. [2021-12-16 08:49:07,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 08:49:07,136 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 42 [2021-12-16 08:49:07,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:49:07,140 INFO L225 Difference]: With dead ends: 1884 [2021-12-16 08:49:07,140 INFO L226 Difference]: Without dead ends: 1884 [2021-12-16 08:49:07,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 08:49:07,147 INFO L933 BasicCegarLoop]: 1715 mSDtfsCounter, 1683 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1694 SdHoareTripleChecker+Valid, 3441 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:49:07,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1694 Valid, 3441 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 08:49:07,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states. [2021-12-16 08:49:07,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1878. [2021-12-16 08:49:07,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1096 states have (on average 1.9662408759124088) internal successors, (2155), 1869 states have internal predecessors, (2155), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-16 08:49:07,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2177 transitions. [2021-12-16 08:49:07,167 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2177 transitions. Word has length 42 [2021-12-16 08:49:07,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:49:07,168 INFO L470 AbstractCegarLoop]: Abstraction has 1878 states and 2177 transitions. [2021-12-16 08:49:07,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2021-12-16 08:49:07,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2177 transitions. [2021-12-16 08:49:07,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-16 08:49:07,169 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:49:07,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:49:07,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-12-16 08:49:07,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:49:07,377 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-12-16 08:49:07,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:49:07,377 INFO L85 PathProgramCache]: Analyzing trace with hash 2087041861, now seen corresponding path program 1 times [2021-12-16 08:49:07,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:49:07,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [729362447] [2021-12-16 08:49:07,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:49:07,378 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:49:07,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:49:07,380 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:49:07,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-16 08:49:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:49:07,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 08:49:07,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:49:07,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:49:07,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:49:07,851 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:49:07,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [729362447] [2021-12-16 08:49:07,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [729362447] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:49:07,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:49:07,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 08:49:07,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892901604] [2021-12-16 08:49:07,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:49:07,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 08:49:07,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:49:07,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 08:49:07,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:49:07,852 INFO L87 Difference]: Start difference. First operand 1878 states and 2177 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2021-12-16 08:49:08,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:49:08,045 INFO L93 Difference]: Finished difference Result 2297 states and 2613 transitions. [2021-12-16 08:49:08,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 08:49:08,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 50 [2021-12-16 08:49:08,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:49:08,052 INFO L225 Difference]: With dead ends: 2297 [2021-12-16 08:49:08,053 INFO L226 Difference]: Without dead ends: 2297 [2021-12-16 08:49:08,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 08:49:08,053 INFO L933 BasicCegarLoop]: 1793 mSDtfsCounter, 455 mSDsluCounter, 1589 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 3382 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 08:49:08,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [457 Valid, 3382 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 08:49:08,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2021-12-16 08:49:08,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 1924. [2021-12-16 08:49:08,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1142 states have (on average 1.9273204903677759) internal successors, (2201), 1915 states have internal predecessors, (2201), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-16 08:49:08,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 2223 transitions. [2021-12-16 08:49:08,076 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 2223 transitions. Word has length 50 [2021-12-16 08:49:08,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:49:08,076 INFO L470 AbstractCegarLoop]: Abstraction has 1924 states and 2223 transitions. [2021-12-16 08:49:08,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2021-12-16 08:49:08,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 2223 transitions. [2021-12-16 08:49:08,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-16 08:49:08,077 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:49:08,077 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:49:08,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-12-16 08:49:08,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:49:08,286 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-12-16 08:49:08,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:49:08,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1009990608, now seen corresponding path program 1 times [2021-12-16 08:49:08,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:49:08,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334602616] [2021-12-16 08:49:08,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:49:08,287 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:49:08,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:49:08,288 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:49:08,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-16 08:49:08,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:49:08,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 08:49:08,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:49:08,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:49:08,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:49:08,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 08:49:08,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-16 08:49:08,987 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-16 08:49:08,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-12-16 08:49:09,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:49:09,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:49:09,000 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:49:09,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334602616] [2021-12-16 08:49:09,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1334602616] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:49:09,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:49:09,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 08:49:09,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254869342] [2021-12-16 08:49:09,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:49:09,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:49:09,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:49:09,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:49:09,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:49:09,002 INFO L87 Difference]: Start difference. First operand 1924 states and 2223 transitions. Second operand has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 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) [2021-12-16 08:49:12,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:49:12,094 INFO L93 Difference]: Finished difference Result 2111 states and 2394 transitions. [2021-12-16 08:49:12,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 08:49:12,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 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 53 [2021-12-16 08:49:12,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:49:12,099 INFO L225 Difference]: With dead ends: 2111 [2021-12-16 08:49:12,099 INFO L226 Difference]: Without dead ends: 2111 [2021-12-16 08:49:12,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:49:12,100 INFO L933 BasicCegarLoop]: 817 mSDtfsCounter, 1569 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 1570 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 1670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:49:12,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1585 Valid, 1308 Invalid, 1670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1570 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-16 08:49:12,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2111 states. [2021-12-16 08:49:12,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2111 to 1674. [2021-12-16 08:49:12,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1674 states, 976 states have (on average 1.8442622950819672) internal successors, (1800), 1665 states have internal predecessors, (1800), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-16 08:49:12,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 1822 transitions. [2021-12-16 08:49:12,132 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 1822 transitions. Word has length 53 [2021-12-16 08:49:12,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:49:12,133 INFO L470 AbstractCegarLoop]: Abstraction has 1674 states and 1822 transitions. [2021-12-16 08:49:12,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 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) [2021-12-16 08:49:12,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 1822 transitions. [2021-12-16 08:49:12,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-16 08:49:12,134 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:49:12,134 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:49:12,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-12-16 08:49:12,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:49:12,345 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-12-16 08:49:12,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:49:12,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678057, now seen corresponding path program 1 times [2021-12-16 08:49:12,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:49:12,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1653379743] [2021-12-16 08:49:12,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:49:12,346 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:49:12,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:49:12,347 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:49:12,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-16 08:49:12,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:49:12,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 08:49:12,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:49:12,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:49:12,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-16 08:49:12,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-12-16 08:49:12,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:49:12,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:49:12,659 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:49:12,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1653379743] [2021-12-16 08:49:12,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1653379743] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:49:12,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:49:12,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 08:49:12,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960144883] [2021-12-16 08:49:12,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:49:12,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 08:49:12,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:49:12,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 08:49:12,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 08:49:12,662 INFO L87 Difference]: Start difference. First operand 1674 states and 1822 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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) [2021-12-16 08:49:15,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:49:15,512 INFO L93 Difference]: Finished difference Result 1673 states and 1821 transitions. [2021-12-16 08:49:15,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 08:49:15,512 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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 58 [2021-12-16 08:49:15,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:49:15,516 INFO L225 Difference]: With dead ends: 1673 [2021-12-16 08:49:15,516 INFO L226 Difference]: Without dead ends: 1673 [2021-12-16 08:49:15,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-16 08:49:15,517 INFO L933 BasicCegarLoop]: 1635 mSDtfsCounter, 4 mSDsluCounter, 2525 mSDsCounter, 0 mSdLazyCounter, 2385 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4160 SdHoareTripleChecker+Invalid, 2386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-16 08:49:15,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 4160 Invalid, 2386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2385 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-16 08:49:15,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1673 states. [2021-12-16 08:49:15,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1673 to 1673. [2021-12-16 08:49:15,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 976 states have (on average 1.8432377049180328) internal successors, (1799), 1664 states have internal predecessors, (1799), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-16 08:49:15,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 1821 transitions. [2021-12-16 08:49:15,532 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 1821 transitions. Word has length 58 [2021-12-16 08:49:15,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:49:15,533 INFO L470 AbstractCegarLoop]: Abstraction has 1673 states and 1821 transitions. [2021-12-16 08:49:15,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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) [2021-12-16 08:49:15,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 1821 transitions. [2021-12-16 08:49:15,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-16 08:49:15,535 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:49:15,536 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:49:15,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-12-16 08:49:15,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:49:15,745 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-12-16 08:49:15,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:49:15,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678056, now seen corresponding path program 1 times [2021-12-16 08:49:15,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:49:15,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [157957119] [2021-12-16 08:49:15,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:49:15,746 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:49:15,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:49:15,747 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:49:15,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-16 08:49:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:49:15,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-16 08:49:15,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:49:16,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:49:16,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-16 08:49:16,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-16 08:49:16,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-12-16 08:49:16,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-16 08:49:16,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:49:16,117 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:49:16,117 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:49:16,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [157957119] [2021-12-16 08:49:16,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [157957119] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:49:16,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:49:16,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 08:49:16,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599081360] [2021-12-16 08:49:16,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:49:16,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 08:49:16,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:49:16,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 08:49:16,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 08:49:16,119 INFO L87 Difference]: Start difference. First operand 1673 states and 1821 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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) [2021-12-16 08:49:19,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:49:19,823 INFO L93 Difference]: Finished difference Result 1672 states and 1820 transitions. [2021-12-16 08:49:19,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 08:49:19,823 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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 58 [2021-12-16 08:49:19,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:49:19,826 INFO L225 Difference]: With dead ends: 1672 [2021-12-16 08:49:19,826 INFO L226 Difference]: Without dead ends: 1672 [2021-12-16 08:49:19,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-16 08:49:19,827 INFO L933 BasicCegarLoop]: 1635 mSDtfsCounter, 2 mSDsluCounter, 2583 mSDsCounter, 0 mSdLazyCounter, 2325 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4218 SdHoareTripleChecker+Invalid, 2326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-16 08:49:19,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 4218 Invalid, 2326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2325 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-12-16 08:49:19,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2021-12-16 08:49:19,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 1672. [2021-12-16 08:49:19,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1672 states, 975 states have (on average 1.8441025641025641) internal successors, (1798), 1663 states have internal predecessors, (1798), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-16 08:49:19,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1672 states to 1672 states and 1820 transitions. [2021-12-16 08:49:19,858 INFO L78 Accepts]: Start accepts. Automaton has 1672 states and 1820 transitions. Word has length 58 [2021-12-16 08:49:19,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:49:19,859 INFO L470 AbstractCegarLoop]: Abstraction has 1672 states and 1820 transitions. [2021-12-16 08:49:19,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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) [2021-12-16 08:49:19,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1672 states and 1820 transitions. [2021-12-16 08:49:19,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-16 08:49:19,860 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:49:19,860 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:49:19,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-12-16 08:49:20,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:49:20,069 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-12-16 08:49:20,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:49:20,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1810601854, now seen corresponding path program 1 times [2021-12-16 08:49:20,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:49:20,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92311007] [2021-12-16 08:49:20,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:49:20,072 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:49:20,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:49:20,089 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:49:20,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-16 08:49:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:49:20,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 08:49:20,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:49:20,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:49:20,426 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 08:49:20,426 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:49:20,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92311007] [2021-12-16 08:49:20,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [92311007] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 08:49:20,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 08:49:20,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 08:49:20,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669104886] [2021-12-16 08:49:20,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 08:49:20,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 08:49:20,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:49:20,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 08:49:20,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 08:49:20,427 INFO L87 Difference]: Start difference. First operand 1672 states and 1820 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 08:49:20,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:49:20,467 INFO L93 Difference]: Finished difference Result 1675 states and 1825 transitions. [2021-12-16 08:49:20,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 08:49:20,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2021-12-16 08:49:20,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:49:20,471 INFO L225 Difference]: With dead ends: 1675 [2021-12-16 08:49:20,471 INFO L226 Difference]: Without dead ends: 1675 [2021-12-16 08:49:20,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 08:49:20,472 INFO L933 BasicCegarLoop]: 1634 mSDtfsCounter, 2 mSDsluCounter, 3260 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4894 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 08:49:20,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 4894 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 08:49:20,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1675 states. [2021-12-16 08:49:20,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1675 to 1675. [2021-12-16 08:49:20,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1675 states, 977 states have (on average 1.8433981576253837) internal successors, (1801), 1666 states have internal predecessors, (1801), 11 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2021-12-16 08:49:20,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 1825 transitions. [2021-12-16 08:49:20,494 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 1825 transitions. Word has length 66 [2021-12-16 08:49:20,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:49:20,494 INFO L470 AbstractCegarLoop]: Abstraction has 1675 states and 1825 transitions. [2021-12-16 08:49:20,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 08:49:20,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 1825 transitions. [2021-12-16 08:49:20,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-16 08:49:20,495 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:49:20,495 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:49:20,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-12-16 08:49:20,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:49:20,707 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-12-16 08:49:20,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:49:20,708 INFO L85 PathProgramCache]: Analyzing trace with hash 279721407, now seen corresponding path program 1 times [2021-12-16 08:49:20,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:49:20,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [488214077] [2021-12-16 08:49:20,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 08:49:20,709 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:49:20,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:49:20,711 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:49:20,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-16 08:49:20,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 08:49:20,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 08:49:20,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:49:21,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:49:21,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 08:49:21,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:49:21,169 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:49:21,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [488214077] [2021-12-16 08:49:21,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [488214077] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 08:49:21,170 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 08:49:21,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-16 08:49:21,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062540485] [2021-12-16 08:49:21,170 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 08:49:21,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 08:49:21,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:49:21,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 08:49:21,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 08:49:21,171 INFO L87 Difference]: Start difference. First operand 1675 states and 1825 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 08:49:21,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:49:21,334 INFO L93 Difference]: Finished difference Result 1687 states and 1843 transitions. [2021-12-16 08:49:21,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 08:49:21,335 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 67 [2021-12-16 08:49:21,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:49:21,338 INFO L225 Difference]: With dead ends: 1687 [2021-12-16 08:49:21,338 INFO L226 Difference]: Without dead ends: 1687 [2021-12-16 08:49:21,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2021-12-16 08:49:21,339 INFO L933 BasicCegarLoop]: 1634 mSDtfsCounter, 15 mSDsluCounter, 8137 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 9771 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 08:49:21,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 9771 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 08:49:21,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1687 states. [2021-12-16 08:49:21,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1687 to 1685. [2021-12-16 08:49:21,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1685 states, 986 states have (on average 1.841784989858012) internal successors, (1816), 1675 states have internal predecessors, (1816), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2021-12-16 08:49:21,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1685 states to 1685 states and 1840 transitions. [2021-12-16 08:49:21,366 INFO L78 Accepts]: Start accepts. Automaton has 1685 states and 1840 transitions. Word has length 67 [2021-12-16 08:49:21,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:49:21,367 INFO L470 AbstractCegarLoop]: Abstraction has 1685 states and 1840 transitions. [2021-12-16 08:49:21,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 08:49:21,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1685 states and 1840 transitions. [2021-12-16 08:49:21,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-16 08:49:21,368 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:49:21,368 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:49:21,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-12-16 08:49:21,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:49:21,580 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-12-16 08:49:21,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:49:21,581 INFO L85 PathProgramCache]: Analyzing trace with hash -431906882, now seen corresponding path program 2 times [2021-12-16 08:49:21,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:49:21,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1202018935] [2021-12-16 08:49:21,581 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 08:49:21,582 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:49:21,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:49:21,583 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:49:21,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-16 08:49:21,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 08:49:21,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 08:49:21,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 08:49:21,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:49:22,091 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:49:22,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 08:49:22,277 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:49:22,277 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:49:22,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1202018935] [2021-12-16 08:49:22,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1202018935] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 08:49:22,277 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 08:49:22,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-12-16 08:49:22,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101828009] [2021-12-16 08:49:22,278 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 08:49:22,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-16 08:49:22,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:49:22,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-16 08:49:22,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-12-16 08:49:22,279 INFO L87 Difference]: Start difference. First operand 1685 states and 1840 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 08:49:22,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:49:22,787 INFO L93 Difference]: Finished difference Result 1706 states and 1872 transitions. [2021-12-16 08:49:22,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-16 08:49:22,788 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 70 [2021-12-16 08:49:22,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:49:22,791 INFO L225 Difference]: With dead ends: 1706 [2021-12-16 08:49:22,791 INFO L226 Difference]: Without dead ends: 1702 [2021-12-16 08:49:22,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=499, Unknown=0, NotChecked=0, Total=756 [2021-12-16 08:49:22,792 INFO L933 BasicCegarLoop]: 1637 mSDtfsCounter, 57 mSDsluCounter, 9790 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 11427 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 08:49:22,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 11427 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 08:49:22,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2021-12-16 08:49:22,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1694. [2021-12-16 08:49:22,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1694 states, 995 states have (on average 1.8371859296482411) internal successors, (1828), 1684 states have internal predecessors, (1828), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2021-12-16 08:49:22,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1694 states to 1694 states and 1852 transitions. [2021-12-16 08:49:22,824 INFO L78 Accepts]: Start accepts. Automaton has 1694 states and 1852 transitions. Word has length 70 [2021-12-16 08:49:22,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:49:22,824 INFO L470 AbstractCegarLoop]: Abstraction has 1694 states and 1852 transitions. [2021-12-16 08:49:22,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 08:49:22,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1694 states and 1852 transitions. [2021-12-16 08:49:22,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-16 08:49:22,825 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:49:22,825 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:49:22,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-12-16 08:49:23,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:49:23,035 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-12-16 08:49:23,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:49:23,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1909247970, now seen corresponding path program 3 times [2021-12-16 08:49:23,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:49:23,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2024737240] [2021-12-16 08:49:23,036 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 08:49:23,036 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:49:23,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:49:23,037 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:49:23,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-16 08:49:23,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-12-16 08:49:23,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 08:49:23,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-16 08:49:23,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:49:23,825 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:49:23,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 08:49:24,416 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:49:24,416 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:49:24,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2024737240] [2021-12-16 08:49:24,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2024737240] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 08:49:24,417 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 08:49:24,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2021-12-16 08:49:24,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247134437] [2021-12-16 08:49:24,417 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 08:49:24,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-16 08:49:24,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:49:24,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-16 08:49:24,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2021-12-16 08:49:24,418 INFO L87 Difference]: Start difference. First operand 1694 states and 1852 transitions. Second operand has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 08:49:27,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:49:27,268 INFO L93 Difference]: Finished difference Result 1736 states and 1928 transitions. [2021-12-16 08:49:27,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-12-16 08:49:27,269 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 76 [2021-12-16 08:49:27,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:49:27,271 INFO L225 Difference]: With dead ends: 1736 [2021-12-16 08:49:27,272 INFO L226 Difference]: Without dead ends: 1730 [2021-12-16 08:49:27,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=793, Invalid=1559, Unknown=0, NotChecked=0, Total=2352 [2021-12-16 08:49:27,273 INFO L933 BasicCegarLoop]: 1641 mSDtfsCounter, 129 mSDsluCounter, 17996 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 19637 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 08:49:27,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 19637 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 08:49:27,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2021-12-16 08:49:27,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 1712. [2021-12-16 08:49:27,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1712 states, 1013 states have (on average 1.8272458045409674) internal successors, (1851), 1702 states have internal predecessors, (1851), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2021-12-16 08:49:27,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1712 states to 1712 states and 1875 transitions. [2021-12-16 08:49:27,288 INFO L78 Accepts]: Start accepts. Automaton has 1712 states and 1875 transitions. Word has length 76 [2021-12-16 08:49:27,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:49:27,288 INFO L470 AbstractCegarLoop]: Abstraction has 1712 states and 1875 transitions. [2021-12-16 08:49:27,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 08:49:27,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1712 states and 1875 transitions. [2021-12-16 08:49:27,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-16 08:49:27,289 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:49:27,289 INFO L514 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:49:27,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-12-16 08:49:27,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:49:27,501 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-12-16 08:49:27,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:49:27,501 INFO L85 PathProgramCache]: Analyzing trace with hash -2142570274, now seen corresponding path program 4 times [2021-12-16 08:49:27,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:49:27,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1818046186] [2021-12-16 08:49:27,502 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-16 08:49:27,502 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:49:27,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:49:27,516 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:49:27,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-16 08:49:27,847 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-16 08:49:27,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 08:49:27,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-16 08:49:27,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:49:28,234 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:49:28,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 08:49:29,644 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 08:49:29,645 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:49:29,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1818046186] [2021-12-16 08:49:29,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1818046186] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 08:49:29,645 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 08:49:29,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2021-12-16 08:49:29,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608829141] [2021-12-16 08:49:29,645 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 08:49:29,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-12-16 08:49:29,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 08:49:29,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-12-16 08:49:29,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2021-12-16 08:49:29,647 INFO L87 Difference]: Start difference. First operand 1712 states and 1875 transitions. Second operand has 50 states, 50 states have (on average 2.22) internal successors, (111), 50 states have internal predecessors, (111), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 08:49:40,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 08:49:40,678 INFO L93 Difference]: Finished difference Result 1792 states and 2008 transitions. [2021-12-16 08:49:40,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-12-16 08:49:40,679 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.22) internal successors, (111), 50 states have internal predecessors, (111), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 88 [2021-12-16 08:49:40,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 08:49:40,696 INFO L225 Difference]: With dead ends: 1792 [2021-12-16 08:49:40,696 INFO L226 Difference]: Without dead ends: 1788 [2021-12-16 08:49:40,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1383 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=3791, Invalid=9319, Unknown=0, NotChecked=0, Total=13110 [2021-12-16 08:49:40,707 INFO L933 BasicCegarLoop]: 1654 mSDtfsCounter, 413 mSDsluCounter, 37931 mSDsCounter, 0 mSdLazyCounter, 2983 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 39585 SdHoareTripleChecker+Invalid, 3367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 2983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-16 08:49:40,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [413 Valid, 39585 Invalid, 3367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 2983 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-16 08:49:40,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1788 states. [2021-12-16 08:49:40,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1788 to 1746. [2021-12-16 08:49:40,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1746 states, 1047 states have (on average 1.8118433619866285) internal successors, (1897), 1736 states have internal predecessors, (1897), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2021-12-16 08:49:40,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1746 states to 1746 states and 1921 transitions. [2021-12-16 08:49:40,734 INFO L78 Accepts]: Start accepts. Automaton has 1746 states and 1921 transitions. Word has length 88 [2021-12-16 08:49:40,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 08:49:40,734 INFO L470 AbstractCegarLoop]: Abstraction has 1746 states and 1921 transitions. [2021-12-16 08:49:40,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.22) internal successors, (111), 50 states have internal predecessors, (111), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 08:49:40,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1746 states and 1921 transitions. [2021-12-16 08:49:40,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-16 08:49:40,735 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 08:49:40,735 INFO L514 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 08:49:40,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-12-16 08:49:40,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 08:49:40,947 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 928 more)] === [2021-12-16 08:49:40,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 08:49:40,948 INFO L85 PathProgramCache]: Analyzing trace with hash 286593598, now seen corresponding path program 5 times [2021-12-16 08:49:40,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 08:49:40,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451827854] [2021-12-16 08:49:40,948 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-16 08:49:40,948 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 08:49:40,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 08:49:40,950 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 08:49:40,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-12-16 08:49:41,991 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-12-16 08:49:41,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 08:49:42,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 58 conjunts are in the unsatisfiable core [2021-12-16 08:49:42,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 08:49:42,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 08:49:42,189 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-16 08:49:42,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-12-16 08:49:42,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-16 08:49:42,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-16 08:49:42,431 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_9 (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|))) (_ bv1 1))) (not (= |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| v_arrayElimCell_9)) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| v_arrayElimCell_9)) (_ bv1 1))))) (exists ((v_ArrVal_1600 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1600)))) is different from true [2021-12-16 08:49:42,519 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_9 (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|))) (_ bv1 1))) (not (= |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| v_arrayElimCell_9)) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| v_arrayElimCell_9)) (_ bv1 1))))) (exists ((v_ArrVal_1602 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1602)))) is different from true [2021-12-16 08:49:42,584 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_9 (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|))) (_ bv1 1))) (not (= |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| v_arrayElimCell_9)) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| v_arrayElimCell_9)) (_ bv1 1))))) (exists ((v_ArrVal_1604 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1604)))) is different from true [2021-12-16 08:49:42,686 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_9 (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|))) (_ bv1 1))) (not (= |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| v_arrayElimCell_9)) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| v_arrayElimCell_9)) (_ bv1 1))))) (exists ((v_ArrVal_1607 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1607)))) is different from true [2021-12-16 08:49:42,709 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_9 (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|))) (_ bv1 1))) (not (= |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| v_arrayElimCell_9)) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| v_arrayElimCell_9)) (_ bv1 1))))) (exists ((v_ArrVal_1608 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1608)))) is different from true [2021-12-16 08:49:42,761 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_9 (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|))) (_ bv1 1))) (not (= |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| v_arrayElimCell_9)) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| v_arrayElimCell_9)) (_ bv1 1))))) (exists ((v_ArrVal_1610 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1610)))) is different from true [2021-12-16 08:49:42,967 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_9 (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|))) (_ bv1 1))) (not (= |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| v_arrayElimCell_9)) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| v_arrayElimCell_9)) (_ bv1 1))))) (exists ((v_ArrVal_1617 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1617)))) is different from true [2021-12-16 08:49:43,163 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_9 (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|))) (_ bv1 1))) (not (= |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| v_arrayElimCell_9)) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| v_arrayElimCell_9)) (_ bv1 1))))) (exists ((v_ArrVal_1623 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1623)))) is different from true [2021-12-16 08:49:43,251 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_9 (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|))) (_ bv1 1))) (not (= |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| v_arrayElimCell_9)) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| v_arrayElimCell_9)) (_ bv1 1))))) (exists ((v_ArrVal_1626 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1626)))) is different from true [2021-12-16 08:49:43,315 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_9 (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|))) (_ bv1 1))) (not (= |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| v_arrayElimCell_9)) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| v_arrayElimCell_9)) (_ bv1 1))))) (exists ((v_ArrVal_1628 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1628)))) is different from true [2021-12-16 08:49:43,333 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_9 (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|))) (_ bv1 1))) (not (= |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| v_arrayElimCell_9)) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| v_arrayElimCell_9)) (_ bv1 1))))) (exists ((v_ArrVal_1629 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1629)))) is different from true [2021-12-16 08:49:43,355 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_9 (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|))) (_ bv1 1))) (not (= |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| v_arrayElimCell_9)) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| v_arrayElimCell_9)) (_ bv1 1))))) (exists ((v_ArrVal_1630 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1630)))) is different from true [2021-12-16 08:49:43,522 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_9 (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|))) (_ bv1 1))) (not (= |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| v_arrayElimCell_9)) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| v_arrayElimCell_9)) (_ bv1 1))))) (exists ((v_ArrVal_1634 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1634)))) is different from true [2021-12-16 08:49:43,693 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_9 (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|))) (_ bv1 1))) (not (= |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| v_arrayElimCell_9)) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| v_arrayElimCell_9)) (_ bv1 1))))) (exists ((v_ArrVal_1640 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1640)))) is different from true [2021-12-16 08:49:43,843 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-16 08:49:43,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2021-12-16 08:49:43,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-12-16 08:49:43,888 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 525 not checked. [2021-12-16 08:49:43,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 08:49:44,109 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 08:49:44,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451827854] [2021-12-16 08:49:44,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451827854] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 08:49:44,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1499628012] [2021-12-16 08:49:44,109 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-16 08:49:44,109 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-16 08:49:44,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-16 08:49:44,112 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-16 08:49:44,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process