./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.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/heap-manipulation/bubble_sort_linux-1.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 a38de44f112a10364737c35b840e673503a211a020b9f494a50e4a32c8fe31c0 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 21:22:03,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 21:22:03,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 21:22:03,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 21:22:03,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 21:22:03,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 21:22:03,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 21:22:03,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 21:22:03,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 21:22:03,696 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 21:22:03,697 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 21:22:03,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 21:22:03,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 21:22:03,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 21:22:03,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 21:22:03,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 21:22:03,706 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 21:22:03,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 21:22:03,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 21:22:03,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 21:22:03,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 21:22:03,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 21:22:03,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 21:22:03,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 21:22:03,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 21:22:03,724 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 21:22:03,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 21:22:03,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 21:22:03,726 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 21:22:03,727 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 21:22:03,727 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 21:22:03,728 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 21:22:03,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 21:22:03,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 21:22:03,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 21:22:03,732 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 21:22:03,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 21:22:03,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 21:22:03,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 21:22:03,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 21:22:03,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 21:22:03,736 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-18 21:22:03,770 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 21:22:03,771 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 21:22:03,771 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 21:22:03,771 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 21:22:03,772 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 21:22:03,772 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 21:22:03,773 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 21:22:03,774 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 21:22:03,774 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 21:22:03,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 21:22:03,775 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-18 21:22:03,775 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-18 21:22:03,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 21:22:03,775 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-18 21:22:03,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 21:22:03,776 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-18 21:22:03,776 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-18 21:22:03,776 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-18 21:22:03,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 21:22:03,776 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-18 21:22:03,777 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-18 21:22:03,777 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 21:22:03,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 21:22:03,777 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 21:22:03,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 21:22:03,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 21:22:03,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 21:22:03,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 21:22:03,779 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 21:22:03,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 21:22:03,780 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 21:22:03,780 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a38de44f112a10364737c35b840e673503a211a020b9f494a50e4a32c8fe31c0 [2021-12-18 21:22:04,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 21:22:04,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 21:22:04,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 21:22:04,100 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 21:22:04,101 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 21:22:04,102 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i [2021-12-18 21:22:04,158 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0197c66b2/6bb7b91e7ece4997a34decf8c1f97e6f/FLAGa0168e0f5 [2021-12-18 21:22:04,652 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 21:22:04,653 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i [2021-12-18 21:22:04,672 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0197c66b2/6bb7b91e7ece4997a34decf8c1f97e6f/FLAGa0168e0f5 [2021-12-18 21:22:05,177 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0197c66b2/6bb7b91e7ece4997a34decf8c1f97e6f [2021-12-18 21:22:05,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 21:22:05,180 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 21:22:05,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 21:22:05,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 21:22:05,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 21:22:05,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 09:22:05" (1/1) ... [2021-12-18 21:22:05,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f86a78c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:22:05, skipping insertion in model container [2021-12-18 21:22:05,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 09:22:05" (1/1) ... [2021-12-18 21:22:05,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 21:22:05,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 21:22:05,483 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/heap-manipulation/bubble_sort_linux-1.i[33822,33835] [2021-12-18 21:22:05,504 WARN L564 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-12-18 21:22:05,506 WARN L564 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-12-18 21:22:05,506 WARN L564 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-12-18 21:22:05,521 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 21:22:05,533 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) [2021-12-18 21:22:05,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@32ae3f7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:22:05, skipping insertion in model container [2021-12-18 21:22:05,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 21:22:05,534 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-18 21:22:05,535 INFO L158 Benchmark]: Toolchain (without parser) took 354.60ms. Allocated memory was 98.6MB in the beginning and 130.0MB in the end (delta: 31.5MB). Free memory was 70.0MB in the beginning and 100.4MB in the end (delta: -30.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-18 21:22:05,536 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 98.6MB. Free memory is still 55.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 21:22:05,536 INFO L158 Benchmark]: CACSL2BoogieTranslator took 352.55ms. Allocated memory was 98.6MB in the beginning and 130.0MB in the end (delta: 31.5MB). Free memory was 69.8MB in the beginning and 100.4MB in the end (delta: -30.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-18 21:22:05,537 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 98.6MB. Free memory is still 55.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 352.55ms. Allocated memory was 98.6MB in the beginning and 130.0MB in the end (delta: 31.5MB). Free memory was 69.8MB in the beginning and 100.4MB in the end (delta: -30.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 860]: 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/heap-manipulation/bubble_sort_linux-1.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 a38de44f112a10364737c35b840e673503a211a020b9f494a50e4a32c8fe31c0 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 21:22:07,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 21:22:07,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 21:22:07,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 21:22:07,363 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 21:22:07,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 21:22:07,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 21:22:07,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 21:22:07,368 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 21:22:07,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 21:22:07,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 21:22:07,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 21:22:07,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 21:22:07,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 21:22:07,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 21:22:07,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 21:22:07,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 21:22:07,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 21:22:07,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 21:22:07,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 21:22:07,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 21:22:07,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 21:22:07,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 21:22:07,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 21:22:07,381 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 21:22:07,382 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 21:22:07,382 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 21:22:07,383 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 21:22:07,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 21:22:07,384 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 21:22:07,384 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 21:22:07,385 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 21:22:07,386 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 21:22:07,386 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 21:22:07,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 21:22:07,387 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 21:22:07,388 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 21:22:07,388 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 21:22:07,388 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 21:22:07,389 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 21:22:07,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 21:22:07,390 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-18 21:22:07,405 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 21:22:07,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 21:22:07,406 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 21:22:07,406 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 21:22:07,407 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 21:22:07,407 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 21:22:07,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 21:22:07,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 21:22:07,408 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 21:22:07,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 21:22:07,408 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-18 21:22:07,408 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-18 21:22:07,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 21:22:07,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-18 21:22:07,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 21:22:07,409 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-18 21:22:07,409 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-18 21:22:07,409 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-18 21:22:07,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 21:22:07,409 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-18 21:22:07,410 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-18 21:22:07,410 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-18 21:22:07,410 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-18 21:22:07,410 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 21:22:07,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 21:22:07,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 21:22:07,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 21:22:07,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 21:22:07,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 21:22:07,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 21:22:07,411 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-18 21:22:07,411 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-18 21:22:07,412 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 21:22:07,412 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-18 21:22:07,412 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a38de44f112a10364737c35b840e673503a211a020b9f494a50e4a32c8fe31c0 [2021-12-18 21:22:07,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 21:22:07,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 21:22:07,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 21:22:07,751 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 21:22:07,751 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 21:22:07,753 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i [2021-12-18 21:22:07,807 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48f368da0/f3e6b43be57e4606a65a7cb08ba7c32a/FLAG020ed22d4 [2021-12-18 21:22:08,242 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 21:22:08,243 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i [2021-12-18 21:22:08,266 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48f368da0/f3e6b43be57e4606a65a7cb08ba7c32a/FLAG020ed22d4 [2021-12-18 21:22:08,782 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48f368da0/f3e6b43be57e4606a65a7cb08ba7c32a [2021-12-18 21:22:08,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 21:22:08,786 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 21:22:08,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 21:22:08,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 21:22:08,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 21:22:08,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 09:22:08" (1/1) ... [2021-12-18 21:22:08,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@507121ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:22:08, skipping insertion in model container [2021-12-18 21:22:08,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 09:22:08" (1/1) ... [2021-12-18 21:22:08,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 21:22:08,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 21:22:09,205 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/heap-manipulation/bubble_sort_linux-1.i[33822,33835] [2021-12-18 21:22:09,253 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 21:22:09,269 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-18 21:22:09,279 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 21:22:09,317 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/heap-manipulation/bubble_sort_linux-1.i[33822,33835] [2021-12-18 21:22:09,340 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 21:22:09,345 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 21:22:09,378 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/heap-manipulation/bubble_sort_linux-1.i[33822,33835] [2021-12-18 21:22:09,395 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 21:22:09,510 INFO L208 MainTranslator]: Completed translation [2021-12-18 21:22:09,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:22:09 WrapperNode [2021-12-18 21:22:09,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 21:22:09,513 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 21:22:09,513 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 21:22:09,513 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 21:22:09,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:22:09" (1/1) ... [2021-12-18 21:22:09,570 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:22:09" (1/1) ... [2021-12-18 21:22:09,618 INFO L137 Inliner]: procedures = 235, calls = 75, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 116 [2021-12-18 21:22:09,619 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 21:22:09,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 21:22:09,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 21:22:09,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 21:22:09,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:22:09" (1/1) ... [2021-12-18 21:22:09,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:22:09" (1/1) ... [2021-12-18 21:22:09,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:22:09" (1/1) ... [2021-12-18 21:22:09,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:22:09" (1/1) ... [2021-12-18 21:22:09,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:22:09" (1/1) ... [2021-12-18 21:22:09,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:22:09" (1/1) ... [2021-12-18 21:22:09,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:22:09" (1/1) ... [2021-12-18 21:22:09,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 21:22:09,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 21:22:09,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 21:22:09,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 21:22:09,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:22:09" (1/1) ... [2021-12-18 21:22:09,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 21:22:09,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 21:22:09,774 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) [2021-12-18 21:22:09,794 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 [2021-12-18 21:22:09,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-18 21:22:09,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 21:22:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2021-12-18 21:22:09,809 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2021-12-18 21:22:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 21:22:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-18 21:22:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 21:22:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-18 21:22:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2021-12-18 21:22:09,810 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2021-12-18 21:22:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2021-12-18 21:22:09,810 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2021-12-18 21:22:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 21:22:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 21:22:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 21:22:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-12-18 21:22:09,811 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-12-18 21:22:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 21:22:09,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 21:22:09,970 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 21:22:09,983 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 21:22:10,576 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 21:22:10,590 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 21:22:10,591 INFO L301 CfgBuilder]: Removed 41 assume(true) statements. [2021-12-18 21:22:10,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 09:22:10 BoogieIcfgContainer [2021-12-18 21:22:10,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 21:22:10,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 21:22:10,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 21:22:10,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 21:22:10,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 09:22:08" (1/3) ... [2021-12-18 21:22:10,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f0a0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 09:22:10, skipping insertion in model container [2021-12-18 21:22:10,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:22:09" (2/3) ... [2021-12-18 21:22:10,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f0a0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 09:22:10, skipping insertion in model container [2021-12-18 21:22:10,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 09:22:10" (3/3) ... [2021-12-18 21:22:10,601 INFO L111 eAbstractionObserver]: Analyzing ICFG bubble_sort_linux-1.i [2021-12-18 21:22:10,605 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 21:22:10,606 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 71 error locations. [2021-12-18 21:22:10,645 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 21:22:10,657 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 [2021-12-18 21:22:10,658 INFO L340 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2021-12-18 21:22:10,671 INFO L276 IsEmpty]: Start isEmpty. Operand has 216 states, 117 states have (on average 2.1623931623931623) internal successors, (253), 206 states have internal predecessors, (253), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-12-18 21:22:10,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-18 21:22:10,677 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:22:10,678 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-18 21:22:10,678 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:22:10,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:22:10,682 INFO L85 PathProgramCache]: Analyzing trace with hash 378924727, now seen corresponding path program 1 times [2021-12-18 21:22:10,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:22:10,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2043299978] [2021-12-18 21:22:10,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:22:10,692 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:22:10,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:22:10,703 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) [2021-12-18 21:22:10,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-18 21:22:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:22:10,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-18 21:22:10,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:22:10,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:22:10,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:22:10,805 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:22:10,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2043299978] [2021-12-18 21:22:10,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2043299978] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:22:10,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:22:10,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 21:22:10,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186933152] [2021-12-18 21:22:10,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:22:10,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-18 21:22:10,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:22:10,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-18 21:22:10,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-18 21:22:10,844 INFO L87 Difference]: Start difference. First operand has 216 states, 117 states have (on average 2.1623931623931623) internal successors, (253), 206 states have internal predecessors, (253), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) 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) [2021-12-18 21:22:10,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:22:10,889 INFO L93 Difference]: Finished difference Result 212 states and 234 transitions. [2021-12-18 21:22:10,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-18 21:22:10,891 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 [2021-12-18 21:22:10,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:22:10,901 INFO L225 Difference]: With dead ends: 212 [2021-12-18 21:22:10,901 INFO L226 Difference]: Without dead ends: 210 [2021-12-18 21:22:10,902 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 [2021-12-18 21:22:10,905 INFO L933 BasicCegarLoop]: 234 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, 234 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 [2021-12-18 21:22:10,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 21:22:10,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-12-18 21:22:10,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2021-12-18 21:22:10,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 115 states have (on average 1.7826086956521738) internal successors, (205), 199 states have internal predecessors, (205), 21 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-18 21:22:10,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 232 transitions. [2021-12-18 21:22:10,964 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 232 transitions. Word has length 5 [2021-12-18 21:22:10,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:22:10,965 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 232 transitions. [2021-12-18 21:22:10,965 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) [2021-12-18 21:22:10,965 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 232 transitions. [2021-12-18 21:22:10,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-18 21:22:10,966 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:22:10,966 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-18 21:22:10,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-18 21:22:11,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:22:11,174 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:22:11,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:22:11,175 INFO L85 PathProgramCache]: Analyzing trace with hash 378924789, now seen corresponding path program 1 times [2021-12-18 21:22:11,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:22:11,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457469863] [2021-12-18 21:22:11,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:22:11,176 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:22:11,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:22:11,179 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) [2021-12-18 21:22:11,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-18 21:22:11,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:22:11,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 21:22:11,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:22:11,275 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 [2021-12-18 21:22:11,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:22:11,284 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:22:11,285 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:22:11,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457469863] [2021-12-18 21:22:11,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1457469863] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:22:11,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:22:11,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 21:22:11,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019883612] [2021-12-18 21:22:11,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:22:11,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 21:22:11,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:22:11,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 21:22:11,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 21:22:11,287 INFO L87 Difference]: Start difference. First operand 210 states and 232 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) [2021-12-18 21:22:11,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:22:11,443 INFO L93 Difference]: Finished difference Result 229 states and 251 transitions. [2021-12-18 21:22:11,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 21:22:11,444 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 [2021-12-18 21:22:11,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:22:11,455 INFO L225 Difference]: With dead ends: 229 [2021-12-18 21:22:11,455 INFO L226 Difference]: Without dead ends: 229 [2021-12-18 21:22:11,456 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 [2021-12-18 21:22:11,456 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 69 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 21:22:11,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 314 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 21:22:11,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-12-18 21:22:11,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 207. [2021-12-18 21:22:11,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 115 states have (on average 1.7565217391304349) internal successors, (202), 196 states have internal predecessors, (202), 21 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-18 21:22:11,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 229 transitions. [2021-12-18 21:22:11,464 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 229 transitions. Word has length 5 [2021-12-18 21:22:11,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:22:11,464 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 229 transitions. [2021-12-18 21:22:11,464 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) [2021-12-18 21:22:11,465 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 229 transitions. [2021-12-18 21:22:11,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-18 21:22:11,465 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:22:11,465 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-18 21:22:11,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-18 21:22:11,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:22:11,672 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:22:11,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:22:11,672 INFO L85 PathProgramCache]: Analyzing trace with hash 378924790, now seen corresponding path program 1 times [2021-12-18 21:22:11,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:22:11,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [621418522] [2021-12-18 21:22:11,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:22:11,673 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:22:11,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:22:11,674 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) [2021-12-18 21:22:11,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-18 21:22:11,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:22:11,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 21:22:11,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:22:11,731 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 [2021-12-18 21:22:11,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:22:11,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:22:11,744 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:22:11,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [621418522] [2021-12-18 21:22:11,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [621418522] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:22:11,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:22:11,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 21:22:11,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42155232] [2021-12-18 21:22:11,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:22:11,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 21:22:11,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:22:11,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 21:22:11,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 21:22:11,746 INFO L87 Difference]: Start difference. First operand 207 states and 229 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) [2021-12-18 21:22:11,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:22:11,959 INFO L93 Difference]: Finished difference Result 205 states and 227 transitions. [2021-12-18 21:22:11,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 21:22:11,972 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 [2021-12-18 21:22:11,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:22:11,973 INFO L225 Difference]: With dead ends: 205 [2021-12-18 21:22:11,973 INFO L226 Difference]: Without dead ends: 205 [2021-12-18 21:22:11,973 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 [2021-12-18 21:22:11,974 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 67 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 21:22:11,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 306 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 21:22:11,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-12-18 21:22:11,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2021-12-18 21:22:11,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 115 states have (on average 1.7304347826086957) internal successors, (199), 193 states have internal predecessors, (199), 21 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-18 21:22:11,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 226 transitions. [2021-12-18 21:22:11,981 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 226 transitions. Word has length 5 [2021-12-18 21:22:11,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:22:11,981 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 226 transitions. [2021-12-18 21:22:11,981 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) [2021-12-18 21:22:11,981 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 226 transitions. [2021-12-18 21:22:11,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-18 21:22:11,982 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:22:11,982 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:22:11,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-18 21:22:12,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:22:12,189 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting list_addErr0REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:22:12,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:22:12,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1374843154, now seen corresponding path program 1 times [2021-12-18 21:22:12,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:22:12,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1407593971] [2021-12-18 21:22:12,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:22:12,190 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:22:12,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:22:12,192 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) [2021-12-18 21:22:12,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-18 21:22:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:22:12,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 21:22:12,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:22:12,300 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-18 21:22:12,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 19 [2021-12-18 21:22:12,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:22:12,343 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:22:12,344 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:22:12,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1407593971] [2021-12-18 21:22:12,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1407593971] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:22:12,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:22:12,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 21:22:12,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009936285] [2021-12-18 21:22:12,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:22:12,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 21:22:12,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:22:12,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 21:22:12,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 21:22:12,346 INFO L87 Difference]: Start difference. First operand 204 states and 226 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:22:12,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:22:12,703 INFO L93 Difference]: Finished difference Result 241 states and 262 transitions. [2021-12-18 21:22:12,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 21:22:12,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-18 21:22:12,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:22:12,705 INFO L225 Difference]: With dead ends: 241 [2021-12-18 21:22:12,705 INFO L226 Difference]: Without dead ends: 241 [2021-12-18 21:22:12,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-18 21:22:12,706 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 269 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 21:22:12,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 399 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 21:22:12,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-12-18 21:22:12,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 218. [2021-12-18 21:22:12,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 129 states have (on average 1.751937984496124) internal successors, (226), 206 states have internal predecessors, (226), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-18 21:22:12,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 253 transitions. [2021-12-18 21:22:12,712 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 253 transitions. Word has length 8 [2021-12-18 21:22:12,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:22:12,713 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 253 transitions. [2021-12-18 21:22:12,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:22:12,713 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 253 transitions. [2021-12-18 21:22:12,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-18 21:22:12,713 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:22:12,713 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:22:12,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-18 21:22:12,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:22:12,921 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting list_addErr1REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:22:12,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:22:12,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1374843155, now seen corresponding path program 1 times [2021-12-18 21:22:12,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:22:12,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1310311661] [2021-12-18 21:22:12,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:22:12,922 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:22:12,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:22:12,923 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) [2021-12-18 21:22:12,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-18 21:22:12,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:22:12,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-18 21:22:12,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:22:13,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:22:13,037 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 [2021-12-18 21:22:13,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:22:13,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:22:13,094 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:22:13,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1310311661] [2021-12-18 21:22:13,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1310311661] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:22:13,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:22:13,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 21:22:13,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342582133] [2021-12-18 21:22:13,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:22:13,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 21:22:13,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:22:13,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 21:22:13,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-18 21:22:13,096 INFO L87 Difference]: Start difference. First operand 218 states and 253 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:22:13,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:22:13,502 INFO L93 Difference]: Finished difference Result 222 states and 246 transitions. [2021-12-18 21:22:13,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 21:22:13,502 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-18 21:22:13,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:22:13,503 INFO L225 Difference]: With dead ends: 222 [2021-12-18 21:22:13,503 INFO L226 Difference]: Without dead ends: 222 [2021-12-18 21:22:13,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-18 21:22:13,504 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 267 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-18 21:22:13,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 310 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-18 21:22:13,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-12-18 21:22:13,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 210. [2021-12-18 21:22:13,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 125 states have (on average 1.696) internal successors, (212), 198 states have internal predecessors, (212), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-18 21:22:13,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 239 transitions. [2021-12-18 21:22:13,509 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 239 transitions. Word has length 8 [2021-12-18 21:22:13,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:22:13,509 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 239 transitions. [2021-12-18 21:22:13,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:22:13,509 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 239 transitions. [2021-12-18 21:22:13,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-18 21:22:13,509 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:22:13,509 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:22:13,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-18 21:22:13,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:22:13,722 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting list_addErr2REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:22:13,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:22:13,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1625645901, now seen corresponding path program 1 times [2021-12-18 21:22:13,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:22:13,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1000740280] [2021-12-18 21:22:13,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:22:13,723 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:22:13,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:22:13,727 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) [2021-12-18 21:22:13,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-18 21:22:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:22:13,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-18 21:22:13,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:22:13,883 INFO L354 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2021-12-18 21:22:13,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 16 [2021-12-18 21:22:13,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:22:14,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-18 21:22:14,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:22:14,040 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:22:14,040 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:22:14,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1000740280] [2021-12-18 21:22:14,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1000740280] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:22:14,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:22:14,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 21:22:14,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450449722] [2021-12-18 21:22:14,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:22:14,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 21:22:14,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:22:14,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 21:22:14,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-18 21:22:14,042 INFO L87 Difference]: Start difference. First operand 210 states and 239 transitions. Second operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:22:14,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:22:14,565 INFO L93 Difference]: Finished difference Result 231 states and 260 transitions. [2021-12-18 21:22:14,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 21:22:14,566 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-18 21:22:14,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:22:14,568 INFO L225 Difference]: With dead ends: 231 [2021-12-18 21:22:14,568 INFO L226 Difference]: Without dead ends: 231 [2021-12-18 21:22:14,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-12-18 21:22:14,569 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 41 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-18 21:22:14,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 1039 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-18 21:22:14,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-12-18 21:22:14,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 224. [2021-12-18 21:22:14,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 137 states have (on average 1.686131386861314) internal successors, (231), 211 states have internal predecessors, (231), 22 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-18 21:22:14,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 260 transitions. [2021-12-18 21:22:14,573 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 260 transitions. Word has length 10 [2021-12-18 21:22:14,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:22:14,573 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 260 transitions. [2021-12-18 21:22:14,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:22:14,573 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 260 transitions. [2021-12-18 21:22:14,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-18 21:22:14,574 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:22:14,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:22:14,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-18 21:22:14,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:22:14,774 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting list_addErr3REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:22:14,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:22:14,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1625645900, now seen corresponding path program 1 times [2021-12-18 21:22:14,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:22:14,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709272161] [2021-12-18 21:22:14,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:22:14,775 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:22:14,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:22:14,779 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) [2021-12-18 21:22:14,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-18 21:22:14,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:22:14,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-18 21:22:14,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:22:14,969 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 21:22:14,969 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 13 treesize of output 13 [2021-12-18 21:22:14,979 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 [2021-12-18 21:22:15,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:22:15,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:22:15,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-18 21:22:15,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-18 21:22:15,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:22:15,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:22:15,203 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:22:15,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709272161] [2021-12-18 21:22:15,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1709272161] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:22:15,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:22:15,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 21:22:15,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228613150] [2021-12-18 21:22:15,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:22:15,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 21:22:15,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:22:15,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 21:22:15,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-18 21:22:15,204 INFO L87 Difference]: Start difference. First operand 224 states and 260 transitions. Second operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:22:15,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:22:15,898 INFO L93 Difference]: Finished difference Result 230 states and 259 transitions. [2021-12-18 21:22:15,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 21:22:15,899 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-18 21:22:15,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:22:15,900 INFO L225 Difference]: With dead ends: 230 [2021-12-18 21:22:15,900 INFO L226 Difference]: Without dead ends: 230 [2021-12-18 21:22:15,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-12-18 21:22:15,901 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 47 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-18 21:22:15,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 971 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-18 21:22:15,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-12-18 21:22:15,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 224. [2021-12-18 21:22:15,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 137 states have (on average 1.6788321167883211) internal successors, (230), 211 states have internal predecessors, (230), 22 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-18 21:22:15,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 259 transitions. [2021-12-18 21:22:15,906 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 259 transitions. Word has length 10 [2021-12-18 21:22:15,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:22:15,907 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 259 transitions. [2021-12-18 21:22:15,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:22:15,907 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 259 transitions. [2021-12-18 21:22:15,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-18 21:22:15,907 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:22:15,908 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:22:15,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-18 21:22:16,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:22:16,115 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting list_addErr4REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:22:16,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:22:16,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1144584946, now seen corresponding path program 1 times [2021-12-18 21:22:16,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:22:16,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [827078935] [2021-12-18 21:22:16,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:22:16,117 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:22:16,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:22:16,118 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) [2021-12-18 21:22:16,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-18 21:22:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:22:16,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 21:22:16,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:22:16,195 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 [2021-12-18 21:22:16,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:22:16,227 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:22:16,227 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:22:16,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [827078935] [2021-12-18 21:22:16,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [827078935] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:22:16,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:22:16,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 21:22:16,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378837883] [2021-12-18 21:22:16,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:22:16,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 21:22:16,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:22:16,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 21:22:16,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 21:22:16,229 INFO L87 Difference]: Start difference. First operand 224 states and 259 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:22:16,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:22:16,597 INFO L93 Difference]: Finished difference Result 245 states and 270 transitions. [2021-12-18 21:22:16,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 21:22:16,597 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-18 21:22:16,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:22:16,599 INFO L225 Difference]: With dead ends: 245 [2021-12-18 21:22:16,599 INFO L226 Difference]: Without dead ends: 245 [2021-12-18 21:22:16,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-18 21:22:16,599 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 105 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 21:22:16,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 703 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 21:22:16,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-12-18 21:22:16,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 223. [2021-12-18 21:22:16,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 137 states have (on average 1.6423357664233578) internal successors, (225), 210 states have internal predecessors, (225), 22 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-18 21:22:16,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 254 transitions. [2021-12-18 21:22:16,612 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 254 transitions. Word has length 11 [2021-12-18 21:22:16,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:22:16,613 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 254 transitions. [2021-12-18 21:22:16,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:22:16,613 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 254 transitions. [2021-12-18 21:22:16,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-18 21:22:16,613 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:22:16,614 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:22:16,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-18 21:22:16,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:22:16,820 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting list_addErr5REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:22:16,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:22:16,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1144584947, now seen corresponding path program 1 times [2021-12-18 21:22:16,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:22:16,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1311723104] [2021-12-18 21:22:16,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:22:16,821 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:22:16,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:22:16,823 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) [2021-12-18 21:22:16,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-18 21:22:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:22:16,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-18 21:22:16,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:22:16,912 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 [2021-12-18 21:22:16,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:22:16,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:22:16,993 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:22:16,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1311723104] [2021-12-18 21:22:16,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1311723104] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:22:16,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:22:16,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 21:22:16,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253308811] [2021-12-18 21:22:16,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:22:16,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 21:22:16,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:22:16,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 21:22:16,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 21:22:16,994 INFO L87 Difference]: Start difference. First operand 223 states and 254 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:22:17,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:22:17,439 INFO L93 Difference]: Finished difference Result 227 states and 250 transitions. [2021-12-18 21:22:17,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 21:22:17,440 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-18 21:22:17,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:22:17,441 INFO L225 Difference]: With dead ends: 227 [2021-12-18 21:22:17,441 INFO L226 Difference]: Without dead ends: 227 [2021-12-18 21:22:17,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-18 21:22:17,441 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 94 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-18 21:22:17,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 719 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-18 21:22:17,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-12-18 21:22:17,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 223. [2021-12-18 21:22:17,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 137 states have (on average 1.6131386861313868) internal successors, (221), 210 states have internal predecessors, (221), 22 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-18 21:22:17,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 250 transitions. [2021-12-18 21:22:17,446 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 250 transitions. Word has length 11 [2021-12-18 21:22:17,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:22:17,446 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 250 transitions. [2021-12-18 21:22:17,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:22:17,446 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 250 transitions. [2021-12-18 21:22:17,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-18 21:22:17,446 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:22:17,446 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:22:17,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-18 21:22:17,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:22:17,656 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting list_addErr8REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:22:17,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:22:17,656 INFO L85 PathProgramCache]: Analyzing trace with hash 434515829, now seen corresponding path program 1 times [2021-12-18 21:22:17,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:22:17,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [605505648] [2021-12-18 21:22:17,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:22:17,657 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:22:17,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:22:17,658 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) [2021-12-18 21:22:17,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-18 21:22:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:22:17,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 21:22:17,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:22:17,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:22:17,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:22:17,793 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:22:17,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [605505648] [2021-12-18 21:22:17,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [605505648] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:22:17,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:22:17,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 21:22:17,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920288917] [2021-12-18 21:22:17,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:22:17,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 21:22:17,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:22:17,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 21:22:17,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 21:22:17,795 INFO L87 Difference]: Start difference. First operand 223 states and 250 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:22:18,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:22:18,017 INFO L93 Difference]: Finished difference Result 222 states and 247 transitions. [2021-12-18 21:22:18,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 21:22:18,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-18 21:22:18,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:22:18,024 INFO L225 Difference]: With dead ends: 222 [2021-12-18 21:22:18,025 INFO L226 Difference]: Without dead ends: 222 [2021-12-18 21:22:18,025 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 [2021-12-18 21:22:18,025 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 22 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 21:22:18,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 499 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 21:22:18,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-12-18 21:22:18,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2021-12-18 21:22:18,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 137 states have (on average 1.5912408759124088) internal successors, (218), 209 states have internal predecessors, (218), 22 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-18 21:22:18,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 247 transitions. [2021-12-18 21:22:18,030 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 247 transitions. Word has length 13 [2021-12-18 21:22:18,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:22:18,030 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 247 transitions. [2021-12-18 21:22:18,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:22:18,030 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 247 transitions. [2021-12-18 21:22:18,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-18 21:22:18,031 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:22:18,031 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:22:18,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-18 21:22:18,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:22:18,249 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting list_addErr9REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:22:18,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:22:18,250 INFO L85 PathProgramCache]: Analyzing trace with hash 434515830, now seen corresponding path program 1 times [2021-12-18 21:22:18,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:22:18,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2100247218] [2021-12-18 21:22:18,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:22:18,251 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:22:18,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:22:18,252 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) [2021-12-18 21:22:18,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-18 21:22:18,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:22:18,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-18 21:22:18,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:22:18,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:22:18,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:22:18,446 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:22:18,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2100247218] [2021-12-18 21:22:18,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2100247218] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:22:18,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:22:18,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 21:22:18,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143390518] [2021-12-18 21:22:18,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:22:18,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 21:22:18,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:22:18,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 21:22:18,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-18 21:22:18,447 INFO L87 Difference]: Start difference. First operand 222 states and 247 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:22:18,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:22:18,866 INFO L93 Difference]: Finished difference Result 224 states and 245 transitions. [2021-12-18 21:22:18,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 21:22:18,867 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-18 21:22:18,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:22:18,868 INFO L225 Difference]: With dead ends: 224 [2021-12-18 21:22:18,868 INFO L226 Difference]: Without dead ends: 224 [2021-12-18 21:22:18,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-18 21:22:18,869 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 250 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-18 21:22:18,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 917 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-18 21:22:18,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-12-18 21:22:18,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 222. [2021-12-18 21:22:18,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 137 states have (on average 1.5766423357664234) internal successors, (216), 209 states have internal predecessors, (216), 22 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-18 21:22:18,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 245 transitions. [2021-12-18 21:22:18,882 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 245 transitions. Word has length 13 [2021-12-18 21:22:18,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:22:18,882 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 245 transitions. [2021-12-18 21:22:18,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:22:18,883 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 245 transitions. [2021-12-18 21:22:18,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-18 21:22:18,883 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:22:18,883 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] [2021-12-18 21:22:18,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-12-18 21:22:19,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:22:19,092 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:22:19,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:22:19,092 INFO L85 PathProgramCache]: Analyzing trace with hash 853908818, now seen corresponding path program 1 times [2021-12-18 21:22:19,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:22:19,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [949629814] [2021-12-18 21:22:19,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:22:19,093 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:22:19,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:22:19,094 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) [2021-12-18 21:22:19,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-18 21:22:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:22:19,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 21:22:19,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:22:19,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:22:19,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:22:19,244 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:22:19,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [949629814] [2021-12-18 21:22:19,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [949629814] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:22:19,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:22:19,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 21:22:19,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504218273] [2021-12-18 21:22:19,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:22:19,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 21:22:19,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:22:19,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 21:22:19,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 21:22:19,246 INFO L87 Difference]: Start difference. First operand 222 states and 245 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:22:19,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:22:19,354 INFO L93 Difference]: Finished difference Result 221 states and 243 transitions. [2021-12-18 21:22:19,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 21:22:19,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-12-18 21:22:19,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:22:19,356 INFO L225 Difference]: With dead ends: 221 [2021-12-18 21:22:19,356 INFO L226 Difference]: Without dead ends: 221 [2021-12-18 21:22:19,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-18 21:22:19,357 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 297 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 21:22:19,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 453 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 21:22:19,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-12-18 21:22:19,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2021-12-18 21:22:19,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 137 states have (on average 1.5693430656934306) internal successors, (215), 208 states have internal predecessors, (215), 21 states have call successors, (21), 6 states have call predecessors, (21), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-18 21:22:19,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 243 transitions. [2021-12-18 21:22:19,361 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 243 transitions. Word has length 27 [2021-12-18 21:22:19,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:22:19,361 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 243 transitions. [2021-12-18 21:22:19,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:22:19,361 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 243 transitions. [2021-12-18 21:22:19,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-18 21:22:19,361 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:22:19,361 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] [2021-12-18 21:22:19,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-12-18 21:22:19,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:22:19,562 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting inspectErr0REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:22:19,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:22:19,562 INFO L85 PathProgramCache]: Analyzing trace with hash 853896473, now seen corresponding path program 1 times [2021-12-18 21:22:19,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:22:19,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2033378253] [2021-12-18 21:22:19,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:22:19,563 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:22:19,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:22:19,564 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) [2021-12-18 21:22:19,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-18 21:22:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:22:19,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-18 21:22:19,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:22:19,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:22:19,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:22:19,761 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:22:19,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2033378253] [2021-12-18 21:22:19,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2033378253] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:22:19,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:22:19,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 21:22:19,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864925423] [2021-12-18 21:22:19,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:22:19,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 21:22:19,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:22:19,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 21:22:19,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-18 21:22:19,763 INFO L87 Difference]: Start difference. First operand 221 states and 243 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:22:20,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:22:20,203 INFO L93 Difference]: Finished difference Result 216 states and 238 transitions. [2021-12-18 21:22:20,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 21:22:20,203 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-12-18 21:22:20,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:22:20,204 INFO L225 Difference]: With dead ends: 216 [2021-12-18 21:22:20,204 INFO L226 Difference]: Without dead ends: 216 [2021-12-18 21:22:20,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-12-18 21:22:20,205 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 381 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-18 21:22:20,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 424 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-18 21:22:20,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-12-18 21:22:20,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-12-18 21:22:20,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 137 states have (on average 1.532846715328467) internal successors, (210), 203 states have internal predecessors, (210), 21 states have call successors, (21), 6 states have call predecessors, (21), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-18 21:22:20,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 238 transitions. [2021-12-18 21:22:20,209 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 238 transitions. Word has length 27 [2021-12-18 21:22:20,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:22:20,210 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 238 transitions. [2021-12-18 21:22:20,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:22:20,210 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 238 transitions. [2021-12-18 21:22:20,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-18 21:22:20,210 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:22:20,210 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] [2021-12-18 21:22:20,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-12-18 21:22:20,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:22:20,411 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting inspectErr1REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:22:20,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:22:20,411 INFO L85 PathProgramCache]: Analyzing trace with hash 853896474, now seen corresponding path program 1 times [2021-12-18 21:22:20,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:22:20,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524710086] [2021-12-18 21:22:20,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:22:20,412 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:22:20,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:22:20,423 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) [2021-12-18 21:22:20,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-18 21:22:20,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:22:20,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-18 21:22:20,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:22:20,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:22:20,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:22:20,717 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:22:20,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524710086] [2021-12-18 21:22:20,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524710086] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:22:20,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:22:20,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 21:22:20,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930022432] [2021-12-18 21:22:20,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:22:20,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 21:22:20,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:22:20,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 21:22:20,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-18 21:22:20,718 INFO L87 Difference]: Start difference. First operand 216 states and 238 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:22:21,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:22:21,406 INFO L93 Difference]: Finished difference Result 215 states and 237 transitions. [2021-12-18 21:22:21,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 21:22:21,407 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-12-18 21:22:21,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:22:21,408 INFO L225 Difference]: With dead ends: 215 [2021-12-18 21:22:21,408 INFO L226 Difference]: Without dead ends: 215 [2021-12-18 21:22:21,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-12-18 21:22:21,409 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 492 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-18 21:22:21,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [495 Valid, 480 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-18 21:22:21,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-12-18 21:22:21,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2021-12-18 21:22:21,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 137 states have (on average 1.5255474452554745) internal successors, (209), 202 states have internal predecessors, (209), 21 states have call successors, (21), 6 states have call predecessors, (21), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-18 21:22:21,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 237 transitions. [2021-12-18 21:22:21,413 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 237 transitions. Word has length 27 [2021-12-18 21:22:21,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:22:21,414 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 237 transitions. [2021-12-18 21:22:21,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:22:21,414 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 237 transitions. [2021-12-18 21:22:21,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-18 21:22:21,414 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:22:21,414 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] [2021-12-18 21:22:21,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-12-18 21:22:21,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:22:21,628 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:22:21,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:22:21,629 INFO L85 PathProgramCache]: Analyzing trace with hash -661448180, now seen corresponding path program 1 times [2021-12-18 21:22:21,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:22:21,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1182626564] [2021-12-18 21:22:21,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:22:21,630 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:22:21,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:22:21,632 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) [2021-12-18 21:22:21,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-18 21:22:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:22:21,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-18 21:22:21,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:22:21,834 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 21:22:21,835 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 13 treesize of output 13 [2021-12-18 21:22:21,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 21:22:22,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:22:22,057 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:22:22,058 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 19 treesize of output 22 [2021-12-18 21:22:22,147 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:22:22,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 11 [2021-12-18 21:22:22,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:22:22,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:22:22,165 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:22:22,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1182626564] [2021-12-18 21:22:22,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1182626564] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:22:22,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:22:22,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-18 21:22:22,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619553358] [2021-12-18 21:22:22,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:22:22,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-18 21:22:22,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:22:22,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-18 21:22:22,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-12-18 21:22:22,168 INFO L87 Difference]: Start difference. First operand 215 states and 237 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 10 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:22:23,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:22:23,566 INFO L93 Difference]: Finished difference Result 360 states and 397 transitions. [2021-12-18 21:22:23,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-18 21:22:23,566 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 10 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-12-18 21:22:23,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:22:23,568 INFO L225 Difference]: With dead ends: 360 [2021-12-18 21:22:23,569 INFO L226 Difference]: Without dead ends: 360 [2021-12-18 21:22:23,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2021-12-18 21:22:23,569 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 986 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-18 21:22:23,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [986 Valid, 995 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-18 21:22:23,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-12-18 21:22:23,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 294. [2021-12-18 21:22:23,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 211 states have (on average 1.5545023696682465) internal successors, (328), 277 states have internal predecessors, (328), 24 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-18 21:22:23,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 362 transitions. [2021-12-18 21:22:23,584 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 362 transitions. Word has length 30 [2021-12-18 21:22:23,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:22:23,584 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 362 transitions. [2021-12-18 21:22:23,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 10 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:22:23,584 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 362 transitions. [2021-12-18 21:22:23,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-18 21:22:23,587 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:22:23,587 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:22:23,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-12-18 21:22:23,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:22:23,796 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting list_addErr2REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:22:23,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:22:23,796 INFO L85 PathProgramCache]: Analyzing trace with hash -662300209, now seen corresponding path program 1 times [2021-12-18 21:22:23,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:22:23,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304641470] [2021-12-18 21:22:23,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:22:23,797 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:22:23,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:22:23,798 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) [2021-12-18 21:22:23,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-18 21:22:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:22:24,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 37 conjunts are in the unsatisfiable core [2021-12-18 21:22:24,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:22:24,095 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-18 21:22:24,096 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 19 treesize of output 26 [2021-12-18 21:22:24,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 21:22:24,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:22:24,617 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:22:24,617 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 31 treesize of output 32 [2021-12-18 21:22:24,701 INFO L354 Elim1Store]: treesize reduction 42, result has 44.0 percent of original size [2021-12-18 21:22:24,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 53 [2021-12-18 21:22:24,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2021-12-18 21:22:24,922 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 37 treesize of output 21 [2021-12-18 21:22:25,002 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:22:25,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 21:22:25,225 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_493 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_gl_insert_~node~1#1.base_16| (_ BitVec 32)) (v_ArrVal_492 (_ BitVec 1))) (or (not (= (_ bv0 1) (bvadd (bvneg v_ArrVal_492) (_ bv1 1)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_16|))) (= (_ bv0 1) (bvadd (select (store |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_16| v_ArrVal_492) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~1#1.base_16| v_ArrVal_493) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (_ bv1 1))))) is different from false [2021-12-18 21:22:25,409 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_493 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_gl_insert_~node~1#1.base_16| (_ BitVec 32)) (v_ArrVal_491 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_492 (_ BitVec 1))) (or (not (= (_ bv0 1) (bvadd (bvneg v_ArrVal_492) (_ bv1 1)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_16|))) (= (_ bv0 1) (bvadd (select (store |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_16| v_ArrVal_492) (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_491) |v_ULTIMATE.start_gl_insert_~node~1#1.base_16| v_ArrVal_493) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (_ bv1 1))))) is different from false [2021-12-18 21:22:25,611 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:22:25,611 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2021-12-18 21:22:25,614 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:22:25,618 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 44 treesize of output 36 [2021-12-18 21:22:25,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-12-18 21:22:25,974 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:22:25,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1304641470] [2021-12-18 21:22:25,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1304641470] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 21:22:25,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [542933886] [2021-12-18 21:22:25,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:22:25,975 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-18 21:22:25,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-18 21:22:26,005 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-18 21:22:26,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-12-18 21:22:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:22:26,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-18 21:22:26,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:22:26,491 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-12-18 21:22:26,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2021-12-18 21:22:27,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 21:22:27,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:22:27,223 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:22:27,223 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 39 treesize of output 38 [2021-12-18 21:22:27,358 INFO L354 Elim1Store]: treesize reduction 57, result has 44.1 percent of original size [2021-12-18 21:22:27,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 71 [2021-12-18 21:22:27,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 40 [2021-12-18 21:22:27,625 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 36 treesize of output 20 [2021-12-18 21:22:27,706 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:22:27,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 21:22:27,788 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_493 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_571 (_ BitVec 1)) (|v_ULTIMATE.start_gl_insert_~node~1#1.base_18| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_18|))) (= (_ bv0 1) (bvadd (select (store |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_18| v_ArrVal_571) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~1#1.base_18| v_ArrVal_493) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (_ bv1 1))))) is different from false [2021-12-18 21:22:27,831 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_570 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_493 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_571 (_ BitVec 1)) (|v_ULTIMATE.start_gl_insert_~node~1#1.base_18| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_18|))) (= (_ bv0 1) (bvadd (select (store |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_18| v_ArrVal_571) (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_570) |v_ULTIMATE.start_gl_insert_~node~1#1.base_18| v_ArrVal_493) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (_ bv1 1))))) is different from false [2021-12-18 21:22:27,970 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:22:27,970 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2021-12-18 21:22:27,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:22:27,973 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 44 treesize of output 36 [2021-12-18 21:22:27,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-12-18 21:22:30,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [542933886] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 21:22:30,132 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 21:22:30,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 29 [2021-12-18 21:22:30,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019277007] [2021-12-18 21:22:30,132 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 21:22:30,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-18 21:22:30,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:22:30,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-18 21:22:30,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1291, Unknown=9, NotChecked=308, Total=1806 [2021-12-18 21:22:30,133 INFO L87 Difference]: Start difference. First operand 294 states and 362 transitions. Second operand has 31 states, 29 states have (on average 1.793103448275862) internal successors, (52), 26 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-18 21:22:31,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:22:31,027 INFO L93 Difference]: Finished difference Result 334 states and 398 transitions. [2021-12-18 21:22:31,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-18 21:22:31,028 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 1.793103448275862) internal successors, (52), 26 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2021-12-18 21:22:31,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:22:31,030 INFO L225 Difference]: With dead ends: 334 [2021-12-18 21:22:31,030 INFO L226 Difference]: Without dead ends: 334 [2021-12-18 21:22:31,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=290, Invalid=1697, Unknown=9, NotChecked=356, Total=2352 [2021-12-18 21:22:31,031 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 176 mSDsluCounter, 1806 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 1989 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 674 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-18 21:22:31,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 1989 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 486 Invalid, 0 Unknown, 674 Unchecked, 0.5s Time] [2021-12-18 21:22:31,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-12-18 21:22:31,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 294. [2021-12-18 21:22:31,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 211 states have (on average 1.5497630331753554) internal successors, (327), 277 states have internal predecessors, (327), 24 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-18 21:22:31,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 361 transitions. [2021-12-18 21:22:31,037 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 361 transitions. Word has length 29 [2021-12-18 21:22:31,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:22:31,037 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 361 transitions. [2021-12-18 21:22:31,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 1.793103448275862) internal successors, (52), 26 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-18 21:22:31,037 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 361 transitions. [2021-12-18 21:22:31,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-18 21:22:31,038 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:22:31,038 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:22:31,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-12-18 21:22:31,253 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2021-12-18 21:22:31,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2021-12-18 21:22:31,451 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting list_addErr3REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:22:31,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:22:31,451 INFO L85 PathProgramCache]: Analyzing trace with hash -662300208, now seen corresponding path program 1 times [2021-12-18 21:22:31,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:22:31,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [716811556] [2021-12-18 21:22:31,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:22:31,452 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:22:31,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:22:31,453 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) [2021-12-18 21:22:31,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-18 21:22:31,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:22:31,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 53 conjunts are in the unsatisfiable core [2021-12-18 21:22:31,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:22:31,701 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 21:22:31,702 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 13 treesize of output 13 [2021-12-18 21:22:31,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-12-18 21:22:32,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 21:22:32,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 21:22:32,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:22:32,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:22:32,191 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:22:32,191 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 38 treesize of output 37 [2021-12-18 21:22:32,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-18 21:22:32,269 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 21:22:32,270 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 13 treesize of output 13 [2021-12-18 21:22:32,283 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-12-18 21:22:32,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:22:32,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:22:32,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-12-18 21:22:32,452 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 [2021-12-18 21:22:32,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-18 21:22:32,499 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:22:32,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 21:22:32,832 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_655 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_656 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_656) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_655) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))) (forall ((v_ArrVal_656 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_656) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32)))))) is different from false [2021-12-18 21:22:38,374 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:22:38,374 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 77 [2021-12-18 21:22:38,383 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:22:38,384 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 77 [2021-12-18 21:22:38,386 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:22:38,387 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 103 treesize of output 95 [2021-12-18 21:22:38,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:22:38,391 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 138 treesize of output 118 [2021-12-18 21:22:38,397 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-18 21:22:38,398 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 15 treesize of output 14 [2021-12-18 21:22:38,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 103 [2021-12-18 21:22:38,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 99 [2021-12-18 21:22:38,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 95 [2021-12-18 21:22:38,730 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:22:38,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [716811556] [2021-12-18 21:22:38,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [716811556] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 21:22:38,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [370242123] [2021-12-18 21:22:38,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:22:38,731 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-18 21:22:38,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-18 21:22:38,732 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-18 21:22:38,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-12-18 21:22:39,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:22:39,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 57 conjunts are in the unsatisfiable core [2021-12-18 21:22:39,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:22:39,414 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-18 21:22:39,415 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 19 treesize of output 26 [2021-12-18 21:22:39,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-12-18 21:22:40,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 21:22:40,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 21:22:40,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:22:40,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:22:40,596 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:22:40,596 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 50 treesize of output 47 [2021-12-18 21:22:40,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-18 21:22:40,748 INFO L354 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2021-12-18 21:22:40,749 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 1 case distinctions, treesize of input 16 treesize of output 26 [2021-12-18 21:22:40,771 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-12-18 21:22:40,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-12-18 21:22:40,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:22:40,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2021-12-18 21:22:41,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-18 21:22:41,136 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 [2021-12-18 21:22:41,143 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:22:41,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 21:22:41,233 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_745 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_745) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_744 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_745 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_745) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_744) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))) is different from false [2021-12-18 21:22:41,325 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_gl_insert_~node~1#1.base_22| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_22|))) (and (forall ((v_ArrVal_745 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_gl_insert_~node~1#1.base_22| v_ArrVal_745) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_743 (_ BitVec 32)) (v_ArrVal_744 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_745 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_gl_insert_~node~1#1.base_22| v_ArrVal_745) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) (_ bv8 32)) (select (store |c_#length| |v_ULTIMATE.start_gl_insert_~node~1#1.base_22| v_ArrVal_743) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~1#1.base_22| v_ArrVal_744) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))))) is different from false [2021-12-18 21:22:44,849 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:22:44,850 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 97 [2021-12-18 21:22:44,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:22:44,854 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 133 treesize of output 125 [2021-12-18 21:22:44,867 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:22:44,867 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 95 [2021-12-18 21:22:44,869 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:22:44,871 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 138 treesize of output 118 [2021-12-18 21:22:44,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 103 [2021-12-18 21:22:44,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 99 [2021-12-18 21:22:44,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 95 [2021-12-18 21:22:45,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [370242123] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 21:22:45,785 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 21:22:45,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2021-12-18 21:22:45,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129560241] [2021-12-18 21:22:45,788 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 21:22:45,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-18 21:22:45,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:22:45,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-18 21:22:45,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1376, Unknown=17, NotChecked=234, Total=1806 [2021-12-18 21:22:45,790 INFO L87 Difference]: Start difference. First operand 294 states and 361 transitions. Second operand has 30 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 25 states have internal predecessors, (50), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-18 21:22:47,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:22:47,894 INFO L93 Difference]: Finished difference Result 374 states and 411 transitions. [2021-12-18 21:22:47,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-18 21:22:47,895 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 25 states have internal predecessors, (50), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2021-12-18 21:22:47,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:22:47,897 INFO L225 Difference]: With dead ends: 374 [2021-12-18 21:22:47,897 INFO L226 Difference]: Without dead ends: 374 [2021-12-18 21:22:47,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=255, Invalid=1720, Unknown=17, NotChecked=264, Total=2256 [2021-12-18 21:22:47,898 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 448 mSDsluCounter, 1775 mSDsCounter, 0 mSdLazyCounter, 1347 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 1907 SdHoareTripleChecker+Invalid, 2584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1211 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-18 21:22:47,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [452 Valid, 1907 Invalid, 2584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1347 Invalid, 0 Unknown, 1211 Unchecked, 1.5s Time] [2021-12-18 21:22:47,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-12-18 21:22:47,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 280. [2021-12-18 21:22:47,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 199 states have (on average 1.5778894472361809) internal successors, (314), 264 states have internal predecessors, (314), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-18 21:22:47,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 346 transitions. [2021-12-18 21:22:47,903 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 346 transitions. Word has length 29 [2021-12-18 21:22:47,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:22:47,903 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 346 transitions. [2021-12-18 21:22:47,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 25 states have internal predecessors, (50), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-18 21:22:47,903 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 346 transitions. [2021-12-18 21:22:47,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-18 21:22:47,905 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:22:47,906 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] [2021-12-18 21:22:47,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-12-18 21:22:48,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-12-18 21:22:48,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:22:48,310 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting inspectErr3REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:22:48,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:22:48,311 INFO L85 PathProgramCache]: Analyzing trace with hash -661459978, now seen corresponding path program 1 times [2021-12-18 21:22:48,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:22:48,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [278769476] [2021-12-18 21:22:48,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:22:48,311 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:22:48,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:22:48,312 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:22:48,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-12-18 21:22:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:22:48,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-18 21:22:48,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:22:48,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:22:48,506 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 [2021-12-18 21:22:48,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:22:48,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:22:48,695 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:22:48,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [278769476] [2021-12-18 21:22:48,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [278769476] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:22:48,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:22:48,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 21:22:48,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191142745] [2021-12-18 21:22:48,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:22:48,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 21:22:48,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:22:48,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 21:22:48,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-18 21:22:48,696 INFO L87 Difference]: Start difference. First operand 280 states and 346 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:22:49,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:22:49,147 INFO L93 Difference]: Finished difference Result 278 states and 342 transitions. [2021-12-18 21:22:49,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 21:22:49,148 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-12-18 21:22:49,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:22:49,149 INFO L225 Difference]: With dead ends: 278 [2021-12-18 21:22:49,149 INFO L226 Difference]: Without dead ends: 278 [2021-12-18 21:22:49,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-18 21:22:49,149 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 451 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-18 21:22:49,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 219 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-18 21:22:49,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-12-18 21:22:49,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2021-12-18 21:22:49,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 199 states have (on average 1.5577889447236182) internal successors, (310), 262 states have internal predecessors, (310), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-18 21:22:49,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 342 transitions. [2021-12-18 21:22:49,154 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 342 transitions. Word has length 30 [2021-12-18 21:22:49,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:22:49,155 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 342 transitions. [2021-12-18 21:22:49,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:22:49,156 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 342 transitions. [2021-12-18 21:22:49,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-18 21:22:49,158 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:22:49,158 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:22:49,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-12-18 21:22:49,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:22:49,366 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:22:49,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:22:49,367 INFO L85 PathProgramCache]: Analyzing trace with hash -244243135, now seen corresponding path program 1 times [2021-12-18 21:22:49,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:22:49,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [540263751] [2021-12-18 21:22:49,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:22:49,367 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:22:49,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:22:49,368 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:22:49,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-12-18 21:22:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:22:49,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 50 conjunts are in the unsatisfiable core [2021-12-18 21:22:49,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:22:49,647 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 21:22:49,648 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 13 treesize of output 13 [2021-12-18 21:22:49,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:22:49,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:22:49,764 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 7 treesize of output 3 [2021-12-18 21:22:49,769 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 7 treesize of output 3 [2021-12-18 21:22:50,503 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 69 treesize of output 49 [2021-12-18 21:22:50,517 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-12-18 21:22:50,517 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 40 [2021-12-18 21:22:50,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:22:50,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 28 [2021-12-18 21:22:50,535 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-18 21:22:50,535 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 26 [2021-12-18 21:22:50,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:22:50,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:22:50,824 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:22:50,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-12-18 21:22:50,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:22:50,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:22:50,870 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:22:50,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [540263751] [2021-12-18 21:22:50,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [540263751] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:22:50,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:22:50,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-18 21:22:50,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246587268] [2021-12-18 21:22:50,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:22:50,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-18 21:22:50,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:22:50,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-18 21:22:50,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=223, Unknown=15, NotChecked=0, Total=272 [2021-12-18 21:22:50,872 INFO L87 Difference]: Start difference. First operand 278 states and 342 transitions. Second operand has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 14 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:22:53,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:22:53,288 INFO L93 Difference]: Finished difference Result 452 states and 534 transitions. [2021-12-18 21:22:53,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-18 21:22:53,289 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 14 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2021-12-18 21:22:53,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:22:53,290 INFO L225 Difference]: With dead ends: 452 [2021-12-18 21:22:53,290 INFO L226 Difference]: Without dead ends: 452 [2021-12-18 21:22:53,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=94, Invalid=530, Unknown=26, NotChecked=0, Total=650 [2021-12-18 21:22:53,291 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 399 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 1617 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 2031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 366 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-18 21:22:53,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [403 Valid, 1251 Invalid, 2031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1617 Invalid, 0 Unknown, 366 Unchecked, 1.9s Time] [2021-12-18 21:22:53,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-12-18 21:22:53,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 379. [2021-12-18 21:22:53,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 292 states have (on average 1.5273972602739727) internal successors, (446), 356 states have internal predecessors, (446), 28 states have call successors, (28), 10 states have call predecessors, (28), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-18 21:22:53,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 488 transitions. [2021-12-18 21:22:53,301 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 488 transitions. Word has length 33 [2021-12-18 21:22:53,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:22:53,302 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 488 transitions. [2021-12-18 21:22:53,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 14 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:22:53,302 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 488 transitions. [2021-12-18 21:22:53,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-18 21:22:53,303 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:22:53,303 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] [2021-12-18 21:22:53,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-12-18 21:22:53,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:22:53,512 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:22:53,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:22:53,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1920035533, now seen corresponding path program 1 times [2021-12-18 21:22:53,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:22:53,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [893036514] [2021-12-18 21:22:53,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:22:53,513 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:22:53,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:22:53,514 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:22:53,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-12-18 21:22:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:22:53,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 51 conjunts are in the unsatisfiable core [2021-12-18 21:22:53,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:22:53,742 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 21:22:53,742 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 13 treesize of output 13 [2021-12-18 21:22:53,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:22:53,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:22:53,806 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 7 treesize of output 3 [2021-12-18 21:22:53,814 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 7 treesize of output 3 [2021-12-18 21:22:54,447 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 69 treesize of output 49 [2021-12-18 21:22:54,468 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-12-18 21:22:54,469 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 40 [2021-12-18 21:22:54,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:22:54,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2021-12-18 21:22:54,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:22:54,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2021-12-18 21:22:54,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:22:54,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:22:54,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-18 21:22:54,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:22:54,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:22:54,792 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:22:54,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [893036514] [2021-12-18 21:22:54,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [893036514] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:22:54,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:22:54,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-12-18 21:22:54,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590648259] [2021-12-18 21:22:54,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:22:54,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-18 21:22:54,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:22:54,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-18 21:22:54,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=255, Unknown=15, NotChecked=0, Total=306 [2021-12-18 21:22:54,793 INFO L87 Difference]: Start difference. First operand 379 states and 488 transitions. Second operand has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 15 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:22:57,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:22:57,325 INFO L93 Difference]: Finished difference Result 451 states and 532 transitions. [2021-12-18 21:22:57,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-18 21:22:57,326 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 15 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2021-12-18 21:22:57,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:22:57,327 INFO L225 Difference]: With dead ends: 451 [2021-12-18 21:22:57,327 INFO L226 Difference]: Without dead ends: 451 [2021-12-18 21:22:57,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=104, Invalid=625, Unknown=27, NotChecked=0, Total=756 [2021-12-18 21:22:57,328 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 462 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 1699 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 2299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 555 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-18 21:22:57,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [466 Valid, 1468 Invalid, 2299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1699 Invalid, 0 Unknown, 555 Unchecked, 2.0s Time] [2021-12-18 21:22:57,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-12-18 21:22:57,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 379. [2021-12-18 21:22:57,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 292 states have (on average 1.523972602739726) internal successors, (445), 356 states have internal predecessors, (445), 28 states have call successors, (28), 10 states have call predecessors, (28), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-18 21:22:57,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 487 transitions. [2021-12-18 21:22:57,334 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 487 transitions. Word has length 37 [2021-12-18 21:22:57,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:22:57,334 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 487 transitions. [2021-12-18 21:22:57,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 15 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:22:57,334 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 487 transitions. [2021-12-18 21:22:57,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-18 21:22:57,335 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:22:57,335 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] [2021-12-18 21:22:57,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-12-18 21:22:57,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:22:57,536 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting inspectErr6REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:22:57,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:22:57,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1920024890, now seen corresponding path program 1 times [2021-12-18 21:22:57,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:22:57,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144695829] [2021-12-18 21:22:57,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:22:57,537 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:22:57,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:22:57,538 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:22:57,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-12-18 21:22:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:22:57,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-18 21:22:57,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:22:57,789 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-18 21:22:57,789 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 19 treesize of output 26 [2021-12-18 21:22:57,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:22:57,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:22:57,870 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 7 treesize of output 3 [2021-12-18 21:22:57,880 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 7 treesize of output 3 [2021-12-18 21:22:58,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:22:58,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 44 [2021-12-18 21:22:58,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:22:58,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 30 [2021-12-18 21:22:58,645 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 11 [2021-12-18 21:22:58,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:22:58,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2021-12-18 21:22:58,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:22:58,744 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:22:58,745 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 [2021-12-18 21:22:59,062 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 28 treesize of output 16 [2021-12-18 21:22:59,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:22:59,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:22:59,156 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:22:59,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144695829] [2021-12-18 21:22:59,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1144695829] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:22:59,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:22:59,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-18 21:22:59,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422182950] [2021-12-18 21:22:59,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:22:59,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-18 21:22:59,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:22:59,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-18 21:22:59,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=254, Unknown=15, NotChecked=0, Total=306 [2021-12-18 21:22:59,158 INFO L87 Difference]: Start difference. First operand 379 states and 487 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:23:00,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:23:00,395 INFO L93 Difference]: Finished difference Result 448 states and 529 transitions. [2021-12-18 21:23:00,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-18 21:23:00,395 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2021-12-18 21:23:00,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:23:00,396 INFO L225 Difference]: With dead ends: 448 [2021-12-18 21:23:00,397 INFO L226 Difference]: Without dead ends: 448 [2021-12-18 21:23:00,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=71, Invalid=460, Unknown=21, NotChecked=0, Total=552 [2021-12-18 21:23:00,397 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 351 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 2500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1723 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-18 21:23:00,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 1248 Invalid, 2500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 749 Invalid, 0 Unknown, 1723 Unchecked, 0.8s Time] [2021-12-18 21:23:00,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-12-18 21:23:00,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 379. [2021-12-18 21:23:00,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 292 states have (on average 1.5205479452054795) internal successors, (444), 356 states have internal predecessors, (444), 28 states have call successors, (28), 10 states have call predecessors, (28), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-18 21:23:00,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 486 transitions. [2021-12-18 21:23:00,405 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 486 transitions. Word has length 37 [2021-12-18 21:23:00,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:23:00,405 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 486 transitions. [2021-12-18 21:23:00,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:23:00,405 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 486 transitions. [2021-12-18 21:23:00,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-18 21:23:00,406 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:23:00,406 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] [2021-12-18 21:23:00,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-12-18 21:23:00,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:23:00,614 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting inspectErr7REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:23:00,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:23:00,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1920024891, now seen corresponding path program 1 times [2021-12-18 21:23:00,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:23:00,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1685646238] [2021-12-18 21:23:00,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:23:00,615 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:23:00,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:23:00,616 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:23:00,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-12-18 21:23:00,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:23:00,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 64 conjunts are in the unsatisfiable core [2021-12-18 21:23:00,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:23:00,859 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 [2021-12-18 21:23:00,876 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 21:23:00,877 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 13 treesize of output 13 [2021-12-18 21:23:00,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:23:00,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:23:00,966 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 7 treesize of output 3 [2021-12-18 21:23:00,971 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 7 treesize of output 3 [2021-12-18 21:23:02,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:02,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 89 [2021-12-18 21:23:02,169 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-12-18 21:23:02,169 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 49 [2021-12-18 21:23:02,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:02,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 30 [2021-12-18 21:23:02,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:02,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 37 [2021-12-18 21:23:02,199 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-18 21:23:02,199 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 33 [2021-12-18 21:23:02,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:02,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2021-12-18 21:23:02,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:23:02,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:23:02,353 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:23:02,353 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 46 treesize of output 45 [2021-12-18 21:23:02,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-18 21:23:02,679 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 [2021-12-18 21:23:02,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-18 21:23:02,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:23:02,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:23:02,790 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:23:02,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1685646238] [2021-12-18 21:23:02,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1685646238] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:23:02,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:23:02,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-18 21:23:02,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477020286] [2021-12-18 21:23:02,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:23:02,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-18 21:23:02,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:23:02,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-18 21:23:02,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=253, Unknown=14, NotChecked=0, Total=306 [2021-12-18 21:23:02,792 INFO L87 Difference]: Start difference. First operand 379 states and 486 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:23:04,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:23:04,246 INFO L93 Difference]: Finished difference Result 447 states and 528 transitions. [2021-12-18 21:23:04,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-18 21:23:04,248 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2021-12-18 21:23:04,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:23:04,250 INFO L225 Difference]: With dead ends: 447 [2021-12-18 21:23:04,250 INFO L226 Difference]: Without dead ends: 447 [2021-12-18 21:23:04,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=77, Invalid=502, Unknown=21, NotChecked=0, Total=600 [2021-12-18 21:23:04,250 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 345 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 2339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1468 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-18 21:23:04,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 1427 Invalid, 2339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 841 Invalid, 0 Unknown, 1468 Unchecked, 1.1s Time] [2021-12-18 21:23:04,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-12-18 21:23:04,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 379. [2021-12-18 21:23:04,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 292 states have (on average 1.5102739726027397) internal successors, (441), 356 states have internal predecessors, (441), 28 states have call successors, (28), 10 states have call predecessors, (28), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-18 21:23:04,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 483 transitions. [2021-12-18 21:23:04,257 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 483 transitions. Word has length 37 [2021-12-18 21:23:04,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:23:04,257 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 483 transitions. [2021-12-18 21:23:04,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 15 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:23:04,257 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 483 transitions. [2021-12-18 21:23:04,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-18 21:23:04,258 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:23:04,258 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:23:04,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-12-18 21:23:04,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:23:04,458 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:23:04,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:23:04,459 INFO L85 PathProgramCache]: Analyzing trace with hash -912874368, now seen corresponding path program 1 times [2021-12-18 21:23:04,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:23:04,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1534247571] [2021-12-18 21:23:04,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:23:04,459 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:23:04,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:23:04,472 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:23:04,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-12-18 21:23:04,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:23:04,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 68 conjunts are in the unsatisfiable core [2021-12-18 21:23:04,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:23:04,788 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 21:23:04,788 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 13 treesize of output 13 [2021-12-18 21:23:04,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:23:04,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:23:04,859 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 7 treesize of output 3 [2021-12-18 21:23:04,865 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 7 treesize of output 3 [2021-12-18 21:23:12,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:12,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 214 treesize of output 157 [2021-12-18 21:23:12,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:12,270 INFO L354 Elim1Store]: treesize reduction 17, result has 34.6 percent of original size [2021-12-18 21:23:12,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 134 treesize of output 52 [2021-12-18 21:23:12,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:12,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2021-12-18 21:23:12,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:12,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 29 [2021-12-18 21:23:12,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:12,452 INFO L354 Elim1Store]: treesize reduction 43, result has 14.0 percent of original size [2021-12-18 21:23:12,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 48 [2021-12-18 21:23:12,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:12,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:23:12,590 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-12-18 21:23:12,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 42 [2021-12-18 21:23:12,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:12,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2021-12-18 21:23:13,154 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 27 treesize of output 7 [2021-12-18 21:23:13,363 INFO L354 Elim1Store]: treesize reduction 25, result has 24.2 percent of original size [2021-12-18 21:23:13,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 25 [2021-12-18 21:23:13,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:23:13,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:23:13,445 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:23:13,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1534247571] [2021-12-18 21:23:13,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1534247571] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:23:13,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:23:13,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-18 21:23:13,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821065279] [2021-12-18 21:23:13,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:23:13,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-18 21:23:13,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:23:13,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-18 21:23:13,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=288, Unknown=14, NotChecked=0, Total=342 [2021-12-18 21:23:13,446 INFO L87 Difference]: Start difference. First operand 379 states and 483 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 16 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:23:15,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:23:15,463 INFO L93 Difference]: Finished difference Result 457 states and 570 transitions. [2021-12-18 21:23:15,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-18 21:23:15,464 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 16 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2021-12-18 21:23:15,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:23:15,465 INFO L225 Difference]: With dead ends: 457 [2021-12-18 21:23:15,466 INFO L226 Difference]: Without dead ends: 457 [2021-12-18 21:23:15,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=81, Invalid=548, Unknown=21, NotChecked=0, Total=650 [2021-12-18 21:23:15,466 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 78 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 1333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 685 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-18 21:23:15,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 1590 Invalid, 1333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 642 Invalid, 0 Unknown, 685 Unchecked, 1.4s Time] [2021-12-18 21:23:15,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2021-12-18 21:23:15,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 394. [2021-12-18 21:23:15,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 307 states have (on average 1.485342019543974) internal successors, (456), 370 states have internal predecessors, (456), 28 states have call successors, (28), 11 states have call predecessors, (28), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-18 21:23:15,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 498 transitions. [2021-12-18 21:23:15,479 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 498 transitions. Word has length 40 [2021-12-18 21:23:15,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:23:15,479 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 498 transitions. [2021-12-18 21:23:15,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 16 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:23:15,480 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 498 transitions. [2021-12-18 21:23:15,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-18 21:23:15,480 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:23:15,480 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:23:15,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-12-18 21:23:15,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:23:15,689 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:23:15,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:23:15,689 INFO L85 PathProgramCache]: Analyzing trace with hash -8084452, now seen corresponding path program 1 times [2021-12-18 21:23:15,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:23:15,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [425836947] [2021-12-18 21:23:15,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:23:15,690 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:23:15,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:23:15,691 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:23:15,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-12-18 21:23:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:23:15,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 67 conjunts are in the unsatisfiable core [2021-12-18 21:23:15,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:23:15,995 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 21:23:15,995 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 13 treesize of output 13 [2021-12-18 21:23:16,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:23:16,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:23:16,079 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 7 treesize of output 3 [2021-12-18 21:23:16,085 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 7 treesize of output 3 [2021-12-18 21:23:16,730 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 36 [2021-12-18 21:23:18,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:18,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 190 treesize of output 117 [2021-12-18 21:23:18,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:18,081 INFO L354 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2021-12-18 21:23:18,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 148 treesize of output 139 [2021-12-18 21:23:18,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:18,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 96 [2021-12-18 21:23:18,107 INFO L354 Elim1Store]: treesize reduction 31, result has 26.2 percent of original size [2021-12-18 21:23:18,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 86 treesize of output 59 [2021-12-18 21:23:18,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:18,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 57 [2021-12-18 21:23:18,123 INFO L354 Elim1Store]: treesize reduction 43, result has 14.0 percent of original size [2021-12-18 21:23:18,123 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 43 [2021-12-18 21:23:18,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:23:18,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:18,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2021-12-18 21:23:18,313 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:23:18,314 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 59 treesize of output 56 [2021-12-18 21:23:18,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2021-12-18 21:23:18,693 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 27 treesize of output 15 [2021-12-18 21:23:18,868 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-12-18 21:23:18,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 16 [2021-12-18 21:23:18,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:23:18,922 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:23:18,923 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:23:18,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [425836947] [2021-12-18 21:23:18,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [425836947] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:23:18,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:23:18,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-18 21:23:18,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221851821] [2021-12-18 21:23:18,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:23:18,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-18 21:23:18,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:23:18,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-18 21:23:18,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=286, Unknown=16, NotChecked=0, Total=342 [2021-12-18 21:23:18,924 INFO L87 Difference]: Start difference. First operand 394 states and 498 transitions. Second operand has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 16 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:23:22,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:23:22,776 INFO L93 Difference]: Finished difference Result 461 states and 541 transitions. [2021-12-18 21:23:22,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-18 21:23:22,777 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 16 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2021-12-18 21:23:22,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:23:22,792 INFO L225 Difference]: With dead ends: 461 [2021-12-18 21:23:22,792 INFO L226 Difference]: Without dead ends: 461 [2021-12-18 21:23:22,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=118, Invalid=723, Unknown=29, NotChecked=0, Total=870 [2021-12-18 21:23:22,793 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 383 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 1769 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 2344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 533 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-18 21:23:22,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [387 Valid, 1640 Invalid, 2344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1769 Invalid, 0 Unknown, 533 Unchecked, 2.8s Time] [2021-12-18 21:23:22,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-12-18 21:23:22,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 394. [2021-12-18 21:23:22,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 307 states have (on average 1.482084690553746) internal successors, (455), 370 states have internal predecessors, (455), 28 states have call successors, (28), 11 states have call predecessors, (28), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-18 21:23:22,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 497 transitions. [2021-12-18 21:23:22,806 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 497 transitions. Word has length 43 [2021-12-18 21:23:22,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:23:22,806 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 497 transitions. [2021-12-18 21:23:22,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 16 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:23:22,806 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 497 transitions. [2021-12-18 21:23:22,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-18 21:23:22,806 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:23:22,807 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] [2021-12-18 21:23:22,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-12-18 21:23:23,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:23:23,024 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:23:23,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:23:23,024 INFO L85 PathProgramCache]: Analyzing trace with hash -610222928, now seen corresponding path program 1 times [2021-12-18 21:23:23,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:23:23,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [190958409] [2021-12-18 21:23:23,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:23:23,025 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:23:23,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:23:23,025 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:23:23,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-12-18 21:23:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:23:23,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-18 21:23:23,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:23:23,234 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 [2021-12-18 21:23:23,334 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 21:23:23,334 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 13 treesize of output 13 [2021-12-18 21:23:23,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:23:23,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:23:23,362 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:23:23,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [190958409] [2021-12-18 21:23:23,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [190958409] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:23:23,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:23:23,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 21:23:23,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482160996] [2021-12-18 21:23:23,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:23:23,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 21:23:23,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:23:23,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 21:23:23,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 21:23:23,363 INFO L87 Difference]: Start difference. First operand 394 states and 497 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:23:23,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:23:23,700 INFO L93 Difference]: Finished difference Result 393 states and 493 transitions. [2021-12-18 21:23:23,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 21:23:23,701 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2021-12-18 21:23:23,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:23:23,702 INFO L225 Difference]: With dead ends: 393 [2021-12-18 21:23:23,702 INFO L226 Difference]: Without dead ends: 393 [2021-12-18 21:23:23,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-18 21:23:23,702 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 288 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 21:23:23,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 288 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 21:23:23,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-12-18 21:23:23,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2021-12-18 21:23:23,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 307 states have (on average 1.4723127035830619) internal successors, (452), 369 states have internal predecessors, (452), 27 states have call successors, (27), 11 states have call predecessors, (27), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-18 21:23:23,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 493 transitions. [2021-12-18 21:23:23,708 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 493 transitions. Word has length 46 [2021-12-18 21:23:23,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:23:23,708 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 493 transitions. [2021-12-18 21:23:23,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:23:23,708 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 493 transitions. [2021-12-18 21:23:23,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-18 21:23:23,709 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:23:23,709 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] [2021-12-18 21:23:23,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-12-18 21:23:23,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:23:23,918 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting inspectErr10REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:23:23,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:23:23,918 INFO L85 PathProgramCache]: Analyzing trace with hash -610231965, now seen corresponding path program 1 times [2021-12-18 21:23:23,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:23:23,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [199603833] [2021-12-18 21:23:23,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:23:23,919 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:23:23,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:23:23,920 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:23:23,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-12-18 21:23:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:23:24,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 21:23:24,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:23:24,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:23:24,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:23:24,168 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:23:24,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [199603833] [2021-12-18 21:23:24,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [199603833] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:23:24,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:23:24,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 21:23:24,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639727459] [2021-12-18 21:23:24,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:23:24,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 21:23:24,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:23:24,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 21:23:24,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 21:23:24,171 INFO L87 Difference]: Start difference. First operand 393 states and 493 transitions. Second operand has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:23:24,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:23:24,468 INFO L93 Difference]: Finished difference Result 387 states and 475 transitions. [2021-12-18 21:23:24,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 21:23:24,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2021-12-18 21:23:24,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:23:24,470 INFO L225 Difference]: With dead ends: 387 [2021-12-18 21:23:24,470 INFO L226 Difference]: Without dead ends: 387 [2021-12-18 21:23:24,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 21:23:24,471 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 121 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 21:23:24,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 295 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 21:23:24,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-12-18 21:23:24,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2021-12-18 21:23:24,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 307 states have (on average 1.4136807817589576) internal successors, (434), 363 states have internal predecessors, (434), 27 states have call successors, (27), 11 states have call predecessors, (27), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-18 21:23:24,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 475 transitions. [2021-12-18 21:23:24,485 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 475 transitions. Word has length 46 [2021-12-18 21:23:24,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:23:24,485 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 475 transitions. [2021-12-18 21:23:24,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:23:24,485 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 475 transitions. [2021-12-18 21:23:24,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-18 21:23:24,486 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:23:24,486 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] [2021-12-18 21:23:24,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-12-18 21:23:24,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:23:24,703 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting inspectErr11REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:23:24,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:23:24,704 INFO L85 PathProgramCache]: Analyzing trace with hash -610231964, now seen corresponding path program 1 times [2021-12-18 21:23:24,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:23:24,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1336804379] [2021-12-18 21:23:24,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:23:24,704 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:23:24,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:23:24,705 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:23:24,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-12-18 21:23:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:23:24,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 66 conjunts are in the unsatisfiable core [2021-12-18 21:23:24,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:23:25,030 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 21:23:25,030 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 13 treesize of output 13 [2021-12-18 21:23:25,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-12-18 21:23:25,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:23:25,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:23:25,118 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 7 treesize of output 3 [2021-12-18 21:23:25,127 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 7 treesize of output 3 [2021-12-18 21:23:26,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:26,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 89 [2021-12-18 21:23:26,277 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-12-18 21:23:26,278 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 49 [2021-12-18 21:23:26,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:26,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 30 [2021-12-18 21:23:26,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:26,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 37 [2021-12-18 21:23:26,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:26,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 25 [2021-12-18 21:23:26,318 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-18 21:23:26,318 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 35 [2021-12-18 21:23:26,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:23:26,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:23:26,472 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:23:26,472 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 46 treesize of output 45 [2021-12-18 21:23:26,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-18 21:23:26,858 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 [2021-12-18 21:23:26,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-18 21:23:27,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:23:27,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:23:27,118 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:23:27,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1336804379] [2021-12-18 21:23:27,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1336804379] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:23:27,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:23:27,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-12-18 21:23:27,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447465775] [2021-12-18 21:23:27,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:23:27,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-18 21:23:27,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:23:27,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-18 21:23:27,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=286, Unknown=15, NotChecked=0, Total=342 [2021-12-18 21:23:27,119 INFO L87 Difference]: Start difference. First operand 387 states and 475 transitions. Second operand has 19 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:23:29,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:23:29,133 INFO L93 Difference]: Finished difference Result 440 states and 510 transitions. [2021-12-18 21:23:29,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-18 21:23:29,134 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2021-12-18 21:23:29,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:23:29,136 INFO L225 Difference]: With dead ends: 440 [2021-12-18 21:23:29,136 INFO L226 Difference]: Without dead ends: 440 [2021-12-18 21:23:29,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=94, Invalid=638, Unknown=24, NotChecked=0, Total=756 [2021-12-18 21:23:29,136 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 296 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 1511 SdHoareTripleChecker+Invalid, 2416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1367 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-18 21:23:29,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 1511 Invalid, 2416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1020 Invalid, 0 Unknown, 1367 Unchecked, 1.4s Time] [2021-12-18 21:23:29,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-12-18 21:23:29,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 387. [2021-12-18 21:23:29,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 307 states have (on average 1.3908794788273615) internal successors, (427), 363 states have internal predecessors, (427), 27 states have call successors, (27), 11 states have call predecessors, (27), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-18 21:23:29,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 468 transitions. [2021-12-18 21:23:29,142 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 468 transitions. Word has length 46 [2021-12-18 21:23:29,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:23:29,142 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 468 transitions. [2021-12-18 21:23:29,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:23:29,142 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 468 transitions. [2021-12-18 21:23:29,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-18 21:23:29,142 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:23:29,142 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] [2021-12-18 21:23:29,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-12-18 21:23:29,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:23:29,352 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:23:29,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:23:29,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1176224425, now seen corresponding path program 1 times [2021-12-18 21:23:29,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:23:29,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894388356] [2021-12-18 21:23:29,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:23:29,353 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:23:29,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:23:29,354 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:23:29,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-12-18 21:23:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:23:29,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 72 conjunts are in the unsatisfiable core [2021-12-18 21:23:29,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:23:29,716 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 21:23:29,716 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 13 treesize of output 13 [2021-12-18 21:23:29,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:23:29,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:23:29,815 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 7 treesize of output 3 [2021-12-18 21:23:29,822 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 7 treesize of output 3 [2021-12-18 21:23:30,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:30,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 93 [2021-12-18 21:23:30,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:30,825 INFO L354 Elim1Store]: treesize reduction 44, result has 6.4 percent of original size [2021-12-18 21:23:30,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 104 treesize of output 95 [2021-12-18 21:23:30,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:30,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 76 [2021-12-18 21:23:30,843 INFO L354 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2021-12-18 21:23:30,844 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 51 [2021-12-18 21:23:30,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:30,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 41 [2021-12-18 21:23:30,857 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-18 21:23:30,858 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 37 [2021-12-18 21:23:30,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-18 21:23:30,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-12-18 21:23:31,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:31,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:31,060 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:23:31,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 52 [2021-12-18 21:23:31,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2021-12-18 21:23:31,871 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:23:31,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:31,878 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-18 21:23:31,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 27 [2021-12-18 21:23:31,887 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-12-18 21:23:31,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 18 [2021-12-18 21:23:31,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:23:31,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:23:31,974 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:23:31,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894388356] [2021-12-18 21:23:31,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [894388356] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:23:31,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:23:31,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-12-18 21:23:31,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471893789] [2021-12-18 21:23:31,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:23:31,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-18 21:23:31,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:23:31,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-18 21:23:31,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=358, Unknown=16, NotChecked=0, Total=420 [2021-12-18 21:23:31,975 INFO L87 Difference]: Start difference. First operand 387 states and 468 transitions. Second operand has 21 states, 21 states have (on average 2.142857142857143) internal successors, (45), 17 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:23:36,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:23:36,486 INFO L93 Difference]: Finished difference Result 438 states and 506 transitions. [2021-12-18 21:23:36,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-18 21:23:36,487 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.142857142857143) internal successors, (45), 17 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2021-12-18 21:23:36,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:23:36,488 INFO L225 Difference]: With dead ends: 438 [2021-12-18 21:23:36,488 INFO L226 Difference]: Without dead ends: 438 [2021-12-18 21:23:36,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=146, Invalid=945, Unknown=31, NotChecked=0, Total=1122 [2021-12-18 21:23:36,489 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 414 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 1770 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 2346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 533 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-18 21:23:36,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 1679 Invalid, 2346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1770 Invalid, 0 Unknown, 533 Unchecked, 3.2s Time] [2021-12-18 21:23:36,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-12-18 21:23:36,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 387. [2021-12-18 21:23:36,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 307 states have (on average 1.3843648208469055) internal successors, (425), 363 states have internal predecessors, (425), 27 states have call successors, (27), 11 states have call predecessors, (27), 9 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-18 21:23:36,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 466 transitions. [2021-12-18 21:23:36,494 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 466 transitions. Word has length 49 [2021-12-18 21:23:36,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:23:36,495 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 466 transitions. [2021-12-18 21:23:36,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.142857142857143) internal successors, (45), 17 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:23:36,495 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 466 transitions. [2021-12-18 21:23:36,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-18 21:23:36,495 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:23:36,496 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:23:36,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2021-12-18 21:23:36,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:23:36,705 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:23:36,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:23:36,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1567315803, now seen corresponding path program 1 times [2021-12-18 21:23:36,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:23:36,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [578755342] [2021-12-18 21:23:36,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:23:36,706 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:23:36,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:23:36,707 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:23:36,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-12-18 21:23:37,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:23:37,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 76 conjunts are in the unsatisfiable core [2021-12-18 21:23:37,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:23:37,198 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-12-18 21:23:37,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2021-12-18 21:23:37,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:23:37,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:23:37,353 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 7 treesize of output 3 [2021-12-18 21:23:37,360 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 7 treesize of output 3 [2021-12-18 21:23:38,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:38,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 44 [2021-12-18 21:23:38,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:38,496 INFO L354 Elim1Store]: treesize reduction 44, result has 6.4 percent of original size [2021-12-18 21:23:38,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 38 [2021-12-18 21:23:38,501 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 11 [2021-12-18 21:23:38,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:38,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2021-12-18 21:23:38,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-18 21:23:38,643 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:23:38,644 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 52 treesize of output 47 [2021-12-18 21:23:38,817 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-12-18 21:23:38,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 38 [2021-12-18 21:23:38,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 38 [2021-12-18 21:23:38,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:38,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 12 [2021-12-18 21:23:39,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:39,781 INFO L354 Elim1Store]: treesize reduction 66, result has 14.3 percent of original size [2021-12-18 21:23:39,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 96 treesize of output 89 [2021-12-18 21:23:39,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:39,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 65 [2021-12-18 21:23:39,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 27 [2021-12-18 21:23:39,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 35 [2021-12-18 21:23:39,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 35 [2021-12-18 21:23:40,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-12-18 21:23:40,288 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:23:40,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 21:23:40,633 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1595 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_1595) |c_~#gl_list~0.base|) (bvadd |c_~#gl_list~0.offset| (_ bv4 32))) |c_~#gl_list~0.base|))) is different from false [2021-12-18 21:23:40,983 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1605 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1595 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1606 (_ BitVec 32)) (v_ArrVal_1604 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store (let ((.cse0 (store (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) v_ArrVal_1605) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_1604))) (store .cse0 |c_~#gl_list~0.base| (store (select .cse0 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_1606))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_1595) |c_~#gl_list~0.base|) (bvadd |c_~#gl_list~0.offset| (_ bv4 32))) |c_~#gl_list~0.base|))) is different from false [2021-12-18 21:23:40,986 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:23:40,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [578755342] [2021-12-18 21:23:40,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [578755342] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 21:23:40,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [734744993] [2021-12-18 21:23:40,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:23:40,987 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-18 21:23:40,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-18 21:23:40,988 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-18 21:23:40,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2021-12-18 21:23:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:23:42,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 87 conjunts are in the unsatisfiable core [2021-12-18 21:23:42,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:23:42,280 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 21:23:42,281 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 13 treesize of output 13 [2021-12-18 21:23:42,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:23:42,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:23:42,477 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 7 treesize of output 3 [2021-12-18 21:23:42,486 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 7 treesize of output 3 [2021-12-18 21:23:43,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 21:23:44,379 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 77 treesize of output 57 [2021-12-18 21:23:44,399 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-12-18 21:23:44,400 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 48 [2021-12-18 21:23:44,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:44,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:44,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 30 [2021-12-18 21:23:44,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:44,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2021-12-18 21:23:44,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:23:44,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:23:44,676 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:23:44,676 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 29 treesize of output 30 [2021-12-18 21:23:44,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2021-12-18 21:23:44,842 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 21:23:44,842 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 13 treesize of output 13 [2021-12-18 21:23:44,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:23:44,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2021-12-18 21:23:45,002 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 9 treesize of output 3 [2021-12-18 21:23:45,010 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 8 treesize of output 4 [2021-12-18 21:23:46,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 28 [2021-12-18 21:23:46,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:46,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:46,507 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 21:23:46,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 30 [2021-12-18 21:23:46,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:23:46,513 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 16 treesize of output 20 [2021-12-18 21:23:46,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:23:46,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:23:47,221 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:23:47,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-12-18 21:23:47,358 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-18 21:23:47,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 21:23:47,938 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1737 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= |c_~#gl_list~0.offset| (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_1737) |c_~#gl_list~0.base|) (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))))) is different from false [2021-12-18 21:23:48,357 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1737 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1748 (_ BitVec 32)) (v_ArrVal_1746 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1747 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= |c_~#gl_list~0.offset| (select (select (store (let ((.cse0 (store (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) v_ArrVal_1746) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_1747))) (store .cse0 |c_~#gl_list~0.base| (store (select .cse0 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_1748))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_1737) |c_~#gl_list~0.base|) (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))))) is different from false [2021-12-18 21:23:48,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [734744993] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 21:23:48,360 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 21:23:48,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 50 [2021-12-18 21:23:48,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072339053] [2021-12-18 21:23:48,360 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 21:23:48,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-12-18 21:23:48,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:23:48,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-12-18 21:23:48,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=3086, Unknown=160, NotChecked=468, Total=3906 [2021-12-18 21:23:48,362 INFO L87 Difference]: Start difference. First operand 387 states and 466 transitions. Second operand has 51 states, 51 states have (on average 1.7843137254901962) internal successors, (91), 45 states have internal predecessors, (91), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-18 21:23:58,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:23:58,880 INFO L93 Difference]: Finished difference Result 611 states and 696 transitions. [2021-12-18 21:23:58,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-18 21:23:58,881 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.7843137254901962) internal successors, (91), 45 states have internal predecessors, (91), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 52 [2021-12-18 21:23:58,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:23:58,882 INFO L225 Difference]: With dead ends: 611 [2021-12-18 21:23:58,883 INFO L226 Difference]: Without dead ends: 611 [2021-12-18 21:23:58,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 75 SyntacticMatches, 8 SemanticMatches, 86 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1528 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=546, Invalid=6211, Unknown=231, NotChecked=668, Total=7656 [2021-12-18 21:23:58,884 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 1249 mSDsluCounter, 3318 mSDsCounter, 0 mSdLazyCounter, 3752 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 3535 SdHoareTripleChecker+Invalid, 6424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 3752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2508 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-12-18 21:23:58,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1249 Valid, 3535 Invalid, 6424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 3752 Invalid, 0 Unknown, 2508 Unchecked, 5.0s Time] [2021-12-18 21:23:58,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-12-18 21:23:58,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 488. [2021-12-18 21:23:58,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 400 states have (on average 1.385) internal successors, (554), 457 states have internal predecessors, (554), 32 states have call successors, (32), 14 states have call predecessors, (32), 12 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-18 21:23:58,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 605 transitions. [2021-12-18 21:23:58,891 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 605 transitions. Word has length 52 [2021-12-18 21:23:58,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:23:58,891 INFO L470 AbstractCegarLoop]: Abstraction has 488 states and 605 transitions. [2021-12-18 21:23:58,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.7843137254901962) internal successors, (91), 45 states have internal predecessors, (91), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-18 21:23:58,892 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 605 transitions. [2021-12-18 21:23:58,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-18 21:23:58,892 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:23:58,892 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] [2021-12-18 21:23:58,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-12-18 21:23:59,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2021-12-18 21:23:59,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2021-12-18 21:23:59,308 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:23:59,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:23:59,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1989130177, now seen corresponding path program 1 times [2021-12-18 21:23:59,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:23:59,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1078555303] [2021-12-18 21:23:59,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:23:59,309 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:23:59,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:23:59,310 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:23:59,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-12-18 21:23:59,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:23:59,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 70 conjunts are in the unsatisfiable core [2021-12-18 21:23:59,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:23:59,655 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 21:23:59,655 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 13 treesize of output 13 [2021-12-18 21:23:59,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:23:59,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:23:59,740 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 7 treesize of output 3 [2021-12-18 21:23:59,745 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 7 treesize of output 3 [2021-12-18 21:24:00,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:00,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 93 [2021-12-18 21:24:00,908 INFO L354 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2021-12-18 21:24:00,908 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 51 [2021-12-18 21:24:00,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:00,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 30 [2021-12-18 21:24:00,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:00,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 39 [2021-12-18 21:24:00,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:00,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 25 [2021-12-18 21:24:00,947 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-18 21:24:00,947 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 37 [2021-12-18 21:24:01,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:24:01,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-18 21:24:01,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:01,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 35 [2021-12-18 21:24:01,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 26 [2021-12-18 21:24:02,011 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-12-18 21:24:02,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 18 [2021-12-18 21:24:02,014 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:24:02,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:02,019 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-18 21:24:02,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 20 [2021-12-18 21:24:02,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:24:02,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:24:02,087 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:24:02,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1078555303] [2021-12-18 21:24:02,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1078555303] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:24:02,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:24:02,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-18 21:24:02,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458401882] [2021-12-18 21:24:02,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:24:02,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-18 21:24:02,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:24:02,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-18 21:24:02,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=323, Unknown=15, NotChecked=0, Total=380 [2021-12-18 21:24:02,089 INFO L87 Difference]: Start difference. First operand 488 states and 605 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 17 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:24:07,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:24:07,006 INFO L93 Difference]: Finished difference Result 535 states and 640 transitions. [2021-12-18 21:24:07,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-18 21:24:07,007 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 17 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2021-12-18 21:24:07,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:24:07,008 INFO L225 Difference]: With dead ends: 535 [2021-12-18 21:24:07,008 INFO L226 Difference]: Without dead ends: 535 [2021-12-18 21:24:07,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=146, Invalid=945, Unknown=31, NotChecked=0, Total=1122 [2021-12-18 21:24:07,009 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 405 mSDsluCounter, 1608 mSDsCounter, 0 mSdLazyCounter, 1799 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 2386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 545 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-18 21:24:07,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 1766 Invalid, 2386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1799 Invalid, 0 Unknown, 545 Unchecked, 3.5s Time] [2021-12-18 21:24:07,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2021-12-18 21:24:07,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 488. [2021-12-18 21:24:07,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 400 states have (on average 1.3825) internal successors, (553), 457 states have internal predecessors, (553), 32 states have call successors, (32), 14 states have call predecessors, (32), 12 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-18 21:24:07,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 604 transitions. [2021-12-18 21:24:07,022 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 604 transitions. Word has length 52 [2021-12-18 21:24:07,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:24:07,022 INFO L470 AbstractCegarLoop]: Abstraction has 488 states and 604 transitions. [2021-12-18 21:24:07,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 17 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:24:07,022 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 604 transitions. [2021-12-18 21:24:07,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-18 21:24:07,023 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:24:07,023 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] [2021-12-18 21:24:07,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-12-18 21:24:07,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:24:07,232 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:24:07,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:24:07,233 INFO L85 PathProgramCache]: Analyzing trace with hash -749843176, now seen corresponding path program 1 times [2021-12-18 21:24:07,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:24:07,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767560546] [2021-12-18 21:24:07,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:24:07,234 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:24:07,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:24:07,235 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:24:07,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-12-18 21:24:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:24:07,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 21:24:07,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:24:07,493 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 [2021-12-18 21:24:07,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:24:07,509 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:24:07,509 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:24:07,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [767560546] [2021-12-18 21:24:07,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [767560546] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:24:07,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:24:07,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 21:24:07,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333120486] [2021-12-18 21:24:07,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:24:07,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 21:24:07,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:24:07,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 21:24:07,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 21:24:07,510 INFO L87 Difference]: Start difference. First operand 488 states and 604 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:24:07,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:24:07,787 INFO L93 Difference]: Finished difference Result 487 states and 599 transitions. [2021-12-18 21:24:07,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 21:24:07,788 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-12-18 21:24:07,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:24:07,790 INFO L225 Difference]: With dead ends: 487 [2021-12-18 21:24:07,790 INFO L226 Difference]: Without dead ends: 487 [2021-12-18 21:24:07,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 21:24:07,791 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 46 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 21:24:07,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 585 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 21:24:07,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2021-12-18 21:24:07,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 487. [2021-12-18 21:24:07,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 400 states have (on average 1.3725) internal successors, (549), 456 states have internal predecessors, (549), 31 states have call successors, (31), 14 states have call predecessors, (31), 12 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-18 21:24:07,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 599 transitions. [2021-12-18 21:24:07,799 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 599 transitions. Word has length 55 [2021-12-18 21:24:07,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:24:07,799 INFO L470 AbstractCegarLoop]: Abstraction has 487 states and 599 transitions. [2021-12-18 21:24:07,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:24:07,799 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 599 transitions. [2021-12-18 21:24:07,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-18 21:24:07,799 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:24:07,799 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:24:07,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-12-18 21:24:08,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:24:08,007 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:24:08,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:24:08,008 INFO L85 PathProgramCache]: Analyzing trace with hash 362585137, now seen corresponding path program 1 times [2021-12-18 21:24:08,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:24:08,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676841460] [2021-12-18 21:24:08,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:24:08,008 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:24:08,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:24:08,009 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:24:08,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-12-18 21:24:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:24:08,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 78 conjunts are in the unsatisfiable core [2021-12-18 21:24:08,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:24:08,514 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-12-18 21:24:08,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2021-12-18 21:24:08,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:24:08,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:24:08,640 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 7 treesize of output 3 [2021-12-18 21:24:08,645 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 7 treesize of output 3 [2021-12-18 21:24:09,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:09,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 44 [2021-12-18 21:24:09,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:09,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 30 [2021-12-18 21:24:09,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:09,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 27 [2021-12-18 21:24:09,712 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 13 [2021-12-18 21:24:09,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-18 21:24:09,863 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:24:09,863 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 70 treesize of output 63 [2021-12-18 21:24:10,027 INFO L354 Elim1Store]: treesize reduction 12, result has 61.3 percent of original size [2021-12-18 21:24:10,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 39 [2021-12-18 21:24:10,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 52 [2021-12-18 21:24:10,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:10,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2021-12-18 21:24:11,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:11,050 INFO L354 Elim1Store]: treesize reduction 66, result has 14.3 percent of original size [2021-12-18 21:24:11,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 112 treesize of output 103 [2021-12-18 21:24:11,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:11,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 69 [2021-12-18 21:24:11,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 35 [2021-12-18 21:24:11,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 43 [2021-12-18 21:24:11,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 43 [2021-12-18 21:24:11,694 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 32 treesize of output 16 [2021-12-18 21:24:11,827 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:24:11,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 21:24:12,184 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1999 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (_ bv0 32) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_1999) |c_~#gl_list~0.base|) (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))))) is different from false [2021-12-18 21:24:12,517 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2010 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2008 (_ BitVec 32)) (v_ArrVal_1999 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2009 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (_ bv0 32) (select (select (store (let ((.cse0 (store (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) v_ArrVal_2009) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2010))) (store .cse0 |c_~#gl_list~0.base| (store (select .cse0 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_2008))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_1999) |c_~#gl_list~0.base|) (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))))) is different from false [2021-12-18 21:24:12,519 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:24:12,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [676841460] [2021-12-18 21:24:12,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [676841460] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 21:24:12,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [314444850] [2021-12-18 21:24:12,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:24:12,520 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-18 21:24:12,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-18 21:24:12,521 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-18 21:24:12,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2021-12-18 21:24:13,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:24:13,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 76 conjunts are in the unsatisfiable core [2021-12-18 21:24:13,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:24:13,628 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 21:24:13,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2021-12-18 21:24:13,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:24:13,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:24:13,746 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 7 treesize of output 3 [2021-12-18 21:24:13,750 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 7 treesize of output 3 [2021-12-18 21:24:15,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:15,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 44 [2021-12-18 21:24:15,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:15,334 INFO L354 Elim1Store]: treesize reduction 44, result has 6.4 percent of original size [2021-12-18 21:24:15,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 38 [2021-12-18 21:24:15,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:15,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 27 [2021-12-18 21:24:15,346 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 13 [2021-12-18 21:24:15,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-18 21:24:15,519 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:24:15,519 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 46 treesize of output 43 [2021-12-18 21:24:15,658 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 21:24:15,658 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 13 treesize of output 13 [2021-12-18 21:24:15,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2021-12-18 21:24:15,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:15,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 12 [2021-12-18 21:24:16,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:16,487 INFO L354 Elim1Store]: treesize reduction 58, result has 24.7 percent of original size [2021-12-18 21:24:16,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 95 [2021-12-18 21:24:16,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:16,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 62 [2021-12-18 21:24:16,561 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 12 treesize of output 11 [2021-12-18 21:24:16,629 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:24:16,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 70 [2021-12-18 21:24:16,640 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-18 21:24:16,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2021-12-18 21:24:16,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2021-12-18 21:24:17,160 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 [2021-12-18 21:24:17,287 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:24:17,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 21:24:17,415 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2135 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (_ bv0 32) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2135) |c_~#gl_list~0.base|) (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))))) is different from false [2021-12-18 21:24:17,784 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2145 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2146 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2135 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2144 (_ BitVec 32))) (not (= (_ bv0 32) (select (select (store (let ((.cse0 (store (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) v_ArrVal_2145) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2146))) (store .cse0 |c_~#gl_list~0.base| (store (select .cse0 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_2144))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2135) |c_~#gl_list~0.base|) (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))))) is different from false [2021-12-18 21:24:17,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [314444850] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 21:24:17,794 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 21:24:17,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 46 [2021-12-18 21:24:17,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579617491] [2021-12-18 21:24:17,795 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 21:24:17,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-12-18 21:24:17,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:24:17,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-12-18 21:24:17,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=2356, Unknown=109, NotChecked=412, Total=3080 [2021-12-18 21:24:17,796 INFO L87 Difference]: Start difference. First operand 487 states and 599 transitions. Second operand has 47 states, 47 states have (on average 1.9787234042553192) internal successors, (93), 41 states have internal predecessors, (93), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-18 21:24:23,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:24:23,898 INFO L93 Difference]: Finished difference Result 606 states and 685 transitions. [2021-12-18 21:24:23,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-18 21:24:23,899 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9787234042553192) internal successors, (93), 41 states have internal predecessors, (93), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 56 [2021-12-18 21:24:23,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:24:23,900 INFO L225 Difference]: With dead ends: 606 [2021-12-18 21:24:23,900 INFO L226 Difference]: Without dead ends: 606 [2021-12-18 21:24:23,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 92 SyntacticMatches, 8 SemanticMatches, 72 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1398 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=407, Invalid=4264, Unknown=175, NotChecked=556, Total=5402 [2021-12-18 21:24:23,903 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 993 mSDsluCounter, 3704 mSDsCounter, 0 mSdLazyCounter, 2155 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 3901 SdHoareTripleChecker+Invalid, 4539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2293 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-18 21:24:23,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1001 Valid, 3901 Invalid, 4539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2155 Invalid, 0 Unknown, 2293 Unchecked, 3.4s Time] [2021-12-18 21:24:23,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-12-18 21:24:23,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 487. [2021-12-18 21:24:23,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 400 states have (on average 1.37) internal successors, (548), 456 states have internal predecessors, (548), 31 states have call successors, (31), 14 states have call predecessors, (31), 12 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-18 21:24:23,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 598 transitions. [2021-12-18 21:24:23,912 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 598 transitions. Word has length 56 [2021-12-18 21:24:23,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:24:23,913 INFO L470 AbstractCegarLoop]: Abstraction has 487 states and 598 transitions. [2021-12-18 21:24:23,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9787234042553192) internal successors, (93), 41 states have internal predecessors, (93), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-18 21:24:23,913 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 598 transitions. [2021-12-18 21:24:23,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-18 21:24:23,913 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:24:23,914 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:24:23,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (37)] Forceful destruction successful, exit code 0 [2021-12-18 21:24:24,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-12-18 21:24:24,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:24:24,320 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting inspectErr6REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:24:24,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:24:24,320 INFO L85 PathProgramCache]: Analyzing trace with hash 362574494, now seen corresponding path program 1 times [2021-12-18 21:24:24,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:24:24,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597578433] [2021-12-18 21:24:24,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:24:24,321 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:24:24,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:24:24,322 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:24:24,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-12-18 21:24:24,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:24:24,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 78 conjunts are in the unsatisfiable core [2021-12-18 21:24:24,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:24:24,877 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-12-18 21:24:24,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2021-12-18 21:24:24,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:24:24,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:24:25,035 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 7 treesize of output 3 [2021-12-18 21:24:25,056 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 7 treesize of output 3 [2021-12-18 21:24:26,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:26,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 44 [2021-12-18 21:24:26,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:26,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 30 [2021-12-18 21:24:26,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:26,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 27 [2021-12-18 21:24:26,111 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 13 [2021-12-18 21:24:26,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-18 21:24:26,317 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:24:26,318 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 52 treesize of output 47 [2021-12-18 21:24:26,548 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-12-18 21:24:26,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 38 [2021-12-18 21:24:26,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 38 [2021-12-18 21:24:26,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:26,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 12 [2021-12-18 21:24:27,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:27,683 INFO L354 Elim1Store]: treesize reduction 66, result has 14.3 percent of original size [2021-12-18 21:24:27,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 107 treesize of output 98 [2021-12-18 21:24:27,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:27,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 72 [2021-12-18 21:24:27,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 27 [2021-12-18 21:24:27,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 46 [2021-12-18 21:24:27,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 46 [2021-12-18 21:24:28,147 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 35 treesize of output 19 [2021-12-18 21:24:28,276 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:24:28,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 21:24:29,197 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-12-18 21:24:29,198 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 57 treesize of output 56 [2021-12-18 21:24:29,207 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2271 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2282 (_ BitVec 32)) (v_ArrVal_2280 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2281 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (= .cse0 (select (select (store (let ((.cse1 (store (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_2281) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2280))) (store .cse1 |c_~#gl_list~0.base| (store (select .cse1 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_2282))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2271) |c_~#gl_list~0.base|) (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))))) is different from false [2021-12-18 21:24:29,209 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:24:29,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1597578433] [2021-12-18 21:24:29,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1597578433] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 21:24:29,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2052409721] [2021-12-18 21:24:29,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:24:29,209 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-18 21:24:29,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-18 21:24:29,210 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-18 21:24:29,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2021-12-18 21:24:30,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:24:30,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 81 conjunts are in the unsatisfiable core [2021-12-18 21:24:30,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:24:30,777 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-12-18 21:24:30,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2021-12-18 21:24:30,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:24:30,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:24:31,106 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 7 treesize of output 3 [2021-12-18 21:24:31,114 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 7 treesize of output 3 [2021-12-18 21:24:33,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:33,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 44 [2021-12-18 21:24:33,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:33,176 INFO L354 Elim1Store]: treesize reduction 44, result has 6.4 percent of original size [2021-12-18 21:24:33,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 38 [2021-12-18 21:24:33,181 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 11 [2021-12-18 21:24:33,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:33,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2021-12-18 21:24:33,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-18 21:24:33,438 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:24:33,439 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 60 treesize of output 55 [2021-12-18 21:24:33,710 INFO L354 Elim1Store]: treesize reduction 63, result has 43.8 percent of original size [2021-12-18 21:24:33,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 74 [2021-12-18 21:24:34,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 57 [2021-12-18 21:24:34,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:34,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 25 [2021-12-18 21:24:36,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:36,748 INFO L354 Elim1Store]: treesize reduction 66, result has 14.3 percent of original size [2021-12-18 21:24:36,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 117 treesize of output 108 [2021-12-18 21:24:36,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:36,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 74 [2021-12-18 21:24:36,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 35 [2021-12-18 21:24:37,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48 [2021-12-18 21:24:37,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48 [2021-12-18 21:24:38,097 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 45 treesize of output 25 [2021-12-18 21:24:38,450 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:24:38,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 21:24:38,864 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2422 (_ BitVec 32)) (v_ArrVal_2271 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2420 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2421 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store (let ((.cse0 (store (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) v_ArrVal_2421) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2420))) (store .cse0 |c_~#gl_list~0.base| (store (select .cse0 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_2422))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2271) |c_~#gl_list~0.base|) (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))) (_ bv1 1)))) is different from false [2021-12-18 21:24:38,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2052409721] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 21:24:38,866 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 21:24:38,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 52 [2021-12-18 21:24:38,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608368236] [2021-12-18 21:24:38,866 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 21:24:38,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-12-18 21:24:38,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:24:38,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-12-18 21:24:38,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=3305, Unknown=52, NotChecked=234, Total=3782 [2021-12-18 21:24:38,868 INFO L87 Difference]: Start difference. First operand 487 states and 598 transitions. Second operand has 54 states, 53 states have (on average 1.9245283018867925) internal successors, (102), 47 states have internal predecessors, (102), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-18 21:24:51,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:24:51,256 INFO L93 Difference]: Finished difference Result 668 states and 764 transitions. [2021-12-18 21:24:51,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-12-18 21:24:51,257 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 1.9245283018867925) internal successors, (102), 47 states have internal predecessors, (102), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 56 [2021-12-18 21:24:51,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:24:51,259 INFO L225 Difference]: With dead ends: 668 [2021-12-18 21:24:51,259 INFO L226 Difference]: Without dead ends: 668 [2021-12-18 21:24:51,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 89 SyntacticMatches, 15 SemanticMatches, 97 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2614 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=621, Invalid=8581, Unknown=118, NotChecked=382, Total=9702 [2021-12-18 21:24:51,276 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 1270 mSDsluCounter, 3776 mSDsCounter, 0 mSdLazyCounter, 2722 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 3952 SdHoareTripleChecker+Invalid, 9329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 2722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6504 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-12-18 21:24:51,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1270 Valid, 3952 Invalid, 9329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 2722 Invalid, 0 Unknown, 6504 Unchecked, 4.0s Time] [2021-12-18 21:24:51,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2021-12-18 21:24:51,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 544. [2021-12-18 21:24:51,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 456 states have (on average 1.3771929824561404) internal successors, (628), 512 states have internal predecessors, (628), 31 states have call successors, (31), 15 states have call predecessors, (31), 13 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-18 21:24:51,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 678 transitions. [2021-12-18 21:24:51,303 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 678 transitions. Word has length 56 [2021-12-18 21:24:51,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:24:51,303 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 678 transitions. [2021-12-18 21:24:51,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 1.9245283018867925) internal successors, (102), 47 states have internal predecessors, (102), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-18 21:24:51,304 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 678 transitions. [2021-12-18 21:24:51,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-18 21:24:51,304 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:24:51,304 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:24:51,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-12-18 21:24:51,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (39)] Forceful destruction successful, exit code 0 [2021-12-18 21:24:51,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2021-12-18 21:24:51,705 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting inspectErr7REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:24:51,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:24:51,705 INFO L85 PathProgramCache]: Analyzing trace with hash 362574495, now seen corresponding path program 1 times [2021-12-18 21:24:51,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:24:51,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [702265499] [2021-12-18 21:24:51,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:24:51,706 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:24:51,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:24:51,707 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:24:51,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-12-18 21:24:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:24:52,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 106 conjunts are in the unsatisfiable core [2021-12-18 21:24:52,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:24:52,266 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-12-18 21:24:52,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2021-12-18 21:24:52,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 21:24:52,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:24:52,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:24:52,430 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 7 treesize of output 3 [2021-12-18 21:24:52,434 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 7 treesize of output 3 [2021-12-18 21:24:53,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:53,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 89 [2021-12-18 21:24:53,670 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-12-18 21:24:53,670 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 49 [2021-12-18 21:24:53,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:53,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 39 [2021-12-18 21:24:53,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:53,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 28 [2021-12-18 21:24:53,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:53,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 25 [2021-12-18 21:24:53,697 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-18 21:24:53,697 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 35 [2021-12-18 21:24:53,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-18 21:24:53,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:24:53,950 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:24:53,950 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 71 treesize of output 62 [2021-12-18 21:24:53,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2021-12-18 21:24:54,151 INFO L354 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2021-12-18 21:24:54,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2021-12-18 21:24:54,180 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-12-18 21:24:54,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 38 [2021-12-18 21:24:54,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:24:54,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 45 [2021-12-18 21:24:54,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:54,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2021-12-18 21:24:54,409 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 9 treesize of output 3 [2021-12-18 21:24:55,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:55,473 INFO L354 Elim1Store]: treesize reduction 66, result has 14.3 percent of original size [2021-12-18 21:24:55,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 136 treesize of output 123 [2021-12-18 21:24:55,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:55,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 93 [2021-12-18 21:24:55,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:55,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:55,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2021-12-18 21:24:55,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:24:55,493 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 16 treesize of output 20 [2021-12-18 21:24:55,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 35 [2021-12-18 21:24:55,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2021-12-18 21:24:55,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:24:55,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2021-12-18 21:24:55,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:24:56,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-18 21:24:56,149 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 33 treesize of output 17 [2021-12-18 21:24:56,348 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:24:56,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 21:24:57,265 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2564 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2565 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2565) |c_~#gl_list~0.base|) .cse0) (_ bv4 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2564) |c_~#gl_list~0.base|) .cse0))))) (forall ((v_ArrVal_2565 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2565) |c_~#gl_list~0.base|) (bvadd |c_~#gl_list~0.offset| (_ bv4 32))))) (bvule .cse1 (bvadd .cse1 (_ bv4 32)))))) is different from false [2021-12-18 21:24:57,768 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2582 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2586 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2565 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2585 (_ BitVec 32))) (let ((.cse0 (select (select (store (let ((.cse1 (store (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) v_ArrVal_2586) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2582))) (store .cse1 |c_~#gl_list~0.base| (store (select .cse1 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_2585))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2565) |c_~#gl_list~0.base|) (bvadd |c_~#gl_list~0.offset| (_ bv4 32))))) (bvule .cse0 (bvadd .cse0 (_ bv4 32))))) (forall ((v_ArrVal_2582 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2586 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2564 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2583 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2587 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2565 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2584 (_ BitVec 32)) (v_ArrVal_2585 (_ BitVec 32))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (.cse4 (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))) (bvule (bvadd (select (select (store (let ((.cse2 (store (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_2586) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2582))) (store .cse2 |c_~#gl_list~0.base| (store (select .cse2 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_2585))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2565) |c_~#gl_list~0.base|) .cse4) (_ bv4 32)) (select |c_#length| (select (select (store (let ((.cse5 (store (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_2587) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2583))) (store .cse5 |c_~#gl_list~0.base| (store (select .cse5 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_2584))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2564) |c_~#gl_list~0.base|) .cse4)))))) is different from false [2021-12-18 21:24:57,774 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:24:57,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [702265499] [2021-12-18 21:24:57,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [702265499] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 21:24:57,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [206480786] [2021-12-18 21:24:57,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:24:57,774 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-18 21:24:57,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-18 21:24:57,775 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-18 21:24:57,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2021-12-18 21:24:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:24:59,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 108 conjunts are in the unsatisfiable core [2021-12-18 21:24:59,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:24:59,566 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-18 21:24:59,566 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 19 treesize of output 26 [2021-12-18 21:24:59,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-12-18 21:24:59,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:24:59,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:24:59,831 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 7 treesize of output 3 [2021-12-18 21:24:59,845 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 7 treesize of output 3 [2021-12-18 21:25:03,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:25:03,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 89 [2021-12-18 21:25:03,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:25:03,259 INFO L354 Elim1Store]: treesize reduction 44, result has 6.4 percent of original size [2021-12-18 21:25:03,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 100 treesize of output 91 [2021-12-18 21:25:03,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:25:03,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 72 [2021-12-18 21:25:03,290 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-12-18 21:25:03,291 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 49 [2021-12-18 21:25:03,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:25:03,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 39 [2021-12-18 21:25:03,309 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-18 21:25:03,309 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 35 [2021-12-18 21:25:03,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-18 21:25:03,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:25:03,812 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:25:03,812 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 73 treesize of output 66 [2021-12-18 21:25:03,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-18 21:25:04,177 INFO L354 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2021-12-18 21:25:04,178 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 1 case distinctions, treesize of input 18 treesize of output 30 [2021-12-18 21:25:04,220 INFO L354 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2021-12-18 21:25:04,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 30 [2021-12-18 21:25:04,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:25:04,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 45 [2021-12-18 21:25:04,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:25:04,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 13 [2021-12-18 21:25:04,483 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 9 treesize of output 3 [2021-12-18 21:25:06,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:25:07,032 INFO L354 Elim1Store]: treesize reduction 66, result has 14.3 percent of original size [2021-12-18 21:25:07,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 134 treesize of output 123 [2021-12-18 21:25:07,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:25:07,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 89 [2021-12-18 21:25:07,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:25:07,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:25:07,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2021-12-18 21:25:07,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:25:07,057 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 16 treesize of output 20 [2021-12-18 21:25:07,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 35 [2021-12-18 21:25:07,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36 [2021-12-18 21:25:07,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:25:07,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36 [2021-12-18 21:25:07,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:25:08,057 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 [2021-12-18 21:25:08,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-18 21:25:08,324 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:25:08,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 21:25:08,550 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2732 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2732) |c_~#gl_list~0.base|) (bvadd |c_~#gl_list~0.offset| (_ bv4 32))))) (bvule .cse0 (bvadd .cse0 (_ bv4 32))))) (forall ((v_ArrVal_2732 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2732) |c_~#gl_list~0.base|) .cse1) (_ bv4 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2733) |c_~#gl_list~0.base|) .cse1)))))) is different from false [2021-12-18 21:25:09,292 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2752 (_ BitVec 32)) (v_ArrVal_2755 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2732 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2753 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2756 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2757 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (.cse2 (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))) (bvule (bvadd (select (select (store (let ((.cse0 (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_2754) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2756))) (store .cse0 |c_~#gl_list~0.base| (store (select .cse0 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_2755))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2732) |c_~#gl_list~0.base|) .cse2) (_ bv4 32)) (select |c_#length| (select (select (store (let ((.cse3 (store (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_2753) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2757))) (store .cse3 |c_~#gl_list~0.base| (store (select .cse3 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_2752))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2733) |c_~#gl_list~0.base|) .cse2))))) (forall ((v_ArrVal_2755 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2732 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2756 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (let ((.cse5 (store (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) v_ArrVal_2754) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2756))) (store .cse5 |c_~#gl_list~0.base| (store (select .cse5 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_2755))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2732) |c_~#gl_list~0.base|) (bvadd |c_~#gl_list~0.offset| (_ bv4 32))))) (bvule .cse4 (bvadd .cse4 (_ bv4 32)))))) is different from false [2021-12-18 21:25:09,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [206480786] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 21:25:09,299 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 21:25:09,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 52 [2021-12-18 21:25:09,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433507060] [2021-12-18 21:25:09,299 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 21:25:09,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-12-18 21:25:09,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:25:09,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-12-18 21:25:09,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=3050, Unknown=145, NotChecked=468, Total=3906 [2021-12-18 21:25:09,301 INFO L87 Difference]: Start difference. First operand 544 states and 678 transitions. Second operand has 54 states, 53 states have (on average 1.9245283018867925) internal successors, (102), 47 states have internal predecessors, (102), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-18 21:25:22,202 WARN L227 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 128 DAG size of output: 102 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-18 21:25:26,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:25:26,657 INFO L93 Difference]: Finished difference Result 659 states and 759 transitions. [2021-12-18 21:25:26,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-18 21:25:26,658 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 1.9245283018867925) internal successors, (102), 47 states have internal predecessors, (102), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 56 [2021-12-18 21:25:26,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:25:26,660 INFO L225 Difference]: With dead ends: 659 [2021-12-18 21:25:26,660 INFO L226 Difference]: Without dead ends: 659 [2021-12-18 21:25:26,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 87 SyntacticMatches, 6 SemanticMatches, 77 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1660 ImplicationChecksByTransitivity, 24.9s TimeCoverageRelationStatistics Valid=447, Invalid=4932, Unknown=187, NotChecked=596, Total=6162 [2021-12-18 21:25:26,664 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 1116 mSDsluCounter, 2085 mSDsCounter, 0 mSdLazyCounter, 1786 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 2237 SdHoareTripleChecker+Invalid, 4204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2318 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-18 21:25:26,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1124 Valid, 2237 Invalid, 4204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1786 Invalid, 0 Unknown, 2318 Unchecked, 2.3s Time] [2021-12-18 21:25:26,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2021-12-18 21:25:26,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 544. [2021-12-18 21:25:26,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 456 states have (on average 1.3640350877192982) internal successors, (622), 512 states have internal predecessors, (622), 31 states have call successors, (31), 15 states have call predecessors, (31), 13 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-18 21:25:26,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 672 transitions. [2021-12-18 21:25:26,693 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 672 transitions. Word has length 56 [2021-12-18 21:25:26,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:25:26,694 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 672 transitions. [2021-12-18 21:25:26,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 1.9245283018867925) internal successors, (102), 47 states have internal predecessors, (102), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-18 21:25:26,694 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 672 transitions. [2021-12-18 21:25:26,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-18 21:25:26,694 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:25:26,695 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] [2021-12-18 21:25:26,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (41)] Forceful destruction successful, exit code 0 [2021-12-18 21:25:26,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-12-18 21:25:27,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:25:27,103 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:25:27,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:25:27,103 INFO L85 PathProgramCache]: Analyzing trace with hash -673388594, now seen corresponding path program 1 times [2021-12-18 21:25:27,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:25:27,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1631549463] [2021-12-18 21:25:27,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:25:27,104 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:25:27,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:25:27,104 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:25:27,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-12-18 21:25:27,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:25:27,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-18 21:25:27,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:25:27,487 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 [2021-12-18 21:25:27,571 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-18 21:25:27,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 14 [2021-12-18 21:25:27,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:25:27,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:25:27,597 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:25:27,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1631549463] [2021-12-18 21:25:27,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1631549463] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:25:27,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:25:27,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 21:25:27,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190364380] [2021-12-18 21:25:27,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:25:27,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 21:25:27,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:25:27,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 21:25:27,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-18 21:25:27,598 INFO L87 Difference]: Start difference. First operand 544 states and 672 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:25:28,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:25:28,190 INFO L93 Difference]: Finished difference Result 543 states and 666 transitions. [2021-12-18 21:25:28,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 21:25:28,192 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2021-12-18 21:25:28,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:25:28,194 INFO L225 Difference]: With dead ends: 543 [2021-12-18 21:25:28,194 INFO L226 Difference]: Without dead ends: 543 [2021-12-18 21:25:28,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-12-18 21:25:28,194 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 88 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-18 21:25:28,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 857 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-18 21:25:28,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2021-12-18 21:25:28,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 543. [2021-12-18 21:25:28,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 456 states have (on average 1.3530701754385965) internal successors, (617), 511 states have internal predecessors, (617), 30 states have call successors, (30), 15 states have call predecessors, (30), 13 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-18 21:25:28,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 666 transitions. [2021-12-18 21:25:28,201 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 666 transitions. Word has length 58 [2021-12-18 21:25:28,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:25:28,201 INFO L470 AbstractCegarLoop]: Abstraction has 543 states and 666 transitions. [2021-12-18 21:25:28,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:25:28,202 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 666 transitions. [2021-12-18 21:25:28,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-18 21:25:28,202 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:25:28,202 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:25:28,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2021-12-18 21:25:28,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:25:28,428 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:25:28,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:25:28,428 INFO L85 PathProgramCache]: Analyzing trace with hash -385922916, now seen corresponding path program 1 times [2021-12-18 21:25:28,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:25:28,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [68863297] [2021-12-18 21:25:28,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:25:28,429 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:25:28,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:25:28,430 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:25:28,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-12-18 21:25:28,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:25:29,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 116 conjunts are in the unsatisfiable core [2021-12-18 21:25:29,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:25:29,131 INFO L354 Elim1Store]: treesize reduction 45, result has 45.1 percent of original size [2021-12-18 21:25:29,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 60 [2021-12-18 21:25:29,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:25:29,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:25:29,328 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 7 treesize of output 3 [2021-12-18 21:25:29,335 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 7 treesize of output 3 [2021-12-18 21:25:38,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:25:38,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 216 treesize of output 159 [2021-12-18 21:25:38,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:25:38,298 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-12-18 21:25:38,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 136 treesize of output 54 [2021-12-18 21:25:38,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:25:38,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2021-12-18 21:25:38,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:25:38,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2021-12-18 21:25:38,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:25:38,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:25:38,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:25:38,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:25:38,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:25:38,597 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 21:25:38,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 48 [2021-12-18 21:25:38,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:25:38,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-18 21:25:38,712 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:25:38,712 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 106 treesize of output 95 [2021-12-18 21:25:38,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:25:38,760 INFO L354 Elim1Store]: treesize reduction 138, result has 17.9 percent of original size [2021-12-18 21:25:38,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 67 treesize of output 60 [2021-12-18 21:25:39,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:25:39,178 INFO L354 Elim1Store]: treesize reduction 16, result has 59.0 percent of original size [2021-12-18 21:25:39,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 44 treesize of output 50 [2021-12-18 21:25:39,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 59 [2021-12-18 21:25:39,415 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-12-18 21:25:39,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2021-12-18 21:25:39,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:25:39,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 23 [2021-12-18 21:25:39,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:25:39,575 INFO L354 Elim1Store]: treesize reduction 23, result has 14.8 percent of original size [2021-12-18 21:25:39,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 17 [2021-12-18 21:25:43,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:25:43,446 INFO L354 Elim1Store]: treesize reduction 66, result has 14.3 percent of original size [2021-12-18 21:25:43,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 180 treesize of output 163 [2021-12-18 21:25:43,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:25:43,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 121 [2021-12-18 21:25:43,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:25:43,515 INFO L354 Elim1Store]: treesize reduction 138, result has 17.9 percent of original size [2021-12-18 21:25:43,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 107 treesize of output 77 [2021-12-18 21:25:43,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:25:43,545 INFO L354 Elim1Store]: treesize reduction 50, result has 18.0 percent of original size [2021-12-18 21:25:43,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 50 [2021-12-18 21:25:43,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:25:43,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 36 [2021-12-18 21:25:43,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 27 [2021-12-18 21:25:43,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 46 [2021-12-18 21:25:43,764 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-12-18 21:25:43,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2021-12-18 21:25:43,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 46 [2021-12-18 21:25:43,817 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-12-18 21:25:43,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2021-12-18 21:25:44,431 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 35 treesize of output 19 [2021-12-18 21:25:44,741 INFO L354 Elim1Store]: treesize reduction 21, result has 27.6 percent of original size [2021-12-18 21:25:44,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 20 [2021-12-18 21:25:44,855 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:25:44,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 21:25:45,548 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2956 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2955 (Array (_ BitVec 32) (_ BitVec 32)))) (not (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2955)) (.cse1 (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))) (let ((.cse2 (select (select .cse0 |c_~#gl_list~0.base|) .cse1))) (= (select (select .cse0 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2956) |c_~#gl_list~0.base|) .cse1)) .cse2) .cse2))))) is different from false [2021-12-18 21:25:46,853 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2974 (_ BitVec 32)) (v_ArrVal_2979 (_ BitVec 32)) (v_ArrVal_2978 (_ BitVec 32)) (v_ArrVal_2975 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2956 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2976 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2955 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2977 (Array (_ BitVec 32) (_ BitVec 32)))) (not (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (let ((.cse0 (store (let ((.cse5 (store (store |c_#memory_$Pointer$.offset| .cse2 (store (select |c_#memory_$Pointer$.offset| .cse2) (bvadd (select (select |c_#memory_$Pointer$.offset| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) (_ bv4 32)) v_ArrVal_2974)) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2976))) (store .cse5 |c_~#gl_list~0.base| (store (select .cse5 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_2979))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2955)) (.cse3 (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))) (let ((.cse4 (select (select .cse0 |c_~#gl_list~0.base|) .cse3))) (= (select (select .cse0 (select (select (store (let ((.cse1 (store (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_2977) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2975))) (store .cse1 |c_~#gl_list~0.base| (store (select .cse1 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_2978))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_2956) |c_~#gl_list~0.base|) .cse3)) .cse4) .cse4)))))) is different from false [2021-12-18 21:25:46,857 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:25:46,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [68863297] [2021-12-18 21:25:46,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [68863297] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 21:25:46,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1920546559] [2021-12-18 21:25:46,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:25:46,858 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-18 21:25:46,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-18 21:25:46,859 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-18 21:25:46,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (44)] Waiting until timeout for monitored process [2021-12-18 21:25:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:25:48,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 117 conjunts are in the unsatisfiable core [2021-12-18 21:25:48,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:25:48,567 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-18 21:25:48,567 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 19 treesize of output 26 [2021-12-18 21:25:48,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:25:48,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:25:48,861 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 7 treesize of output 3 [2021-12-18 21:25:48,866 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 7 treesize of output 3 [2021-12-18 21:26:01,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:01,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 216 treesize of output 159 [2021-12-18 21:26:01,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:01,810 INFO L354 Elim1Store]: treesize reduction 44, result has 6.4 percent of original size [2021-12-18 21:26:01,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 186 treesize of output 169 [2021-12-18 21:26:01,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:01,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 142 [2021-12-18 21:26:01,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:01,837 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-12-18 21:26:01,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 136 treesize of output 54 [2021-12-18 21:26:02,162 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 21:26:02,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 27 [2021-12-18 21:26:02,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:02,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2021-12-18 21:26:02,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:02,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:02,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:02,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:02,192 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:26:02,195 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 21:26:02,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 48 [2021-12-18 21:26:02,370 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:26:02,370 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 86 treesize of output 79 [2021-12-18 21:26:02,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:02,402 INFO L354 Elim1Store]: treesize reduction 138, result has 17.9 percent of original size [2021-12-18 21:26:02,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 67 treesize of output 60 [2021-12-18 21:26:02,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:02,682 INFO L354 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2021-12-18 21:26:02,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 30 [2021-12-18 21:26:02,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 43 [2021-12-18 21:26:02,938 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-12-18 21:26:02,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2021-12-18 21:26:03,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:03,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-12-18 21:26:03,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:03,166 INFO L354 Elim1Store]: treesize reduction 23, result has 14.8 percent of original size [2021-12-18 21:26:03,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 17 [2021-12-18 21:26:06,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:07,058 INFO L354 Elim1Store]: treesize reduction 66, result has 14.3 percent of original size [2021-12-18 21:26:07,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 160 treesize of output 147 [2021-12-18 21:26:07,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:07,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 113 [2021-12-18 21:26:07,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:07,120 INFO L354 Elim1Store]: treesize reduction 138, result has 17.9 percent of original size [2021-12-18 21:26:07,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 107 treesize of output 77 [2021-12-18 21:26:07,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:07,145 INFO L354 Elim1Store]: treesize reduction 50, result has 18.0 percent of original size [2021-12-18 21:26:07,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 42 [2021-12-18 21:26:07,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:07,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2021-12-18 21:26:07,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 27 [2021-12-18 21:26:07,493 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-12-18 21:26:07,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2021-12-18 21:26:07,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2021-12-18 21:26:07,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2021-12-18 21:26:07,547 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-12-18 21:26:07,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2021-12-18 21:26:08,145 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 11 [2021-12-18 21:26:08,529 INFO L354 Elim1Store]: treesize reduction 21, result has 27.6 percent of original size [2021-12-18 21:26:08,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 20 [2021-12-18 21:26:08,653 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:26:08,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 21:26:08,864 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3129 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3128 (Array (_ BitVec 32) (_ BitVec 32)))) (not (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3129)) (.cse1 (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))) (let ((.cse2 (select (select .cse0 |c_~#gl_list~0.base|) .cse1))) (= (select (select .cse0 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3128) |c_~#gl_list~0.base|) .cse1)) .cse2) .cse2))))) is different from false [2021-12-18 21:26:10,335 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3155 (_ BitVec 32)) (v_ArrVal_3150 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3153 (_ BitVec 32)) (v_ArrVal_3154 (_ BitVec 32)) (v_ArrVal_3129 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3128 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3152 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3151 (Array (_ BitVec 32) (_ BitVec 32)))) (not (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (let ((.cse0 (store (let ((.cse5 (store (store |c_#memory_$Pointer$.offset| .cse2 (store (select |c_#memory_$Pointer$.offset| .cse2) (bvadd (select (select |c_#memory_$Pointer$.offset| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) (_ bv4 32)) v_ArrVal_3155)) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3152))) (store .cse5 |c_~#gl_list~0.base| (store (select .cse5 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_3154))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3129)) (.cse3 (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))) (let ((.cse4 (select (select .cse0 |c_~#gl_list~0.base|) .cse3))) (= (select (select .cse0 (select (select (store (let ((.cse1 (store (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_3150) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3151))) (store .cse1 |c_~#gl_list~0.base| (store (select .cse1 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_3153))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3128) |c_~#gl_list~0.base|) .cse3)) .cse4) .cse4)))))) is different from false [2021-12-18 21:26:10,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1920546559] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 21:26:10,340 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 21:26:10,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 50 [2021-12-18 21:26:10,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062436512] [2021-12-18 21:26:10,340 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 21:26:10,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-12-18 21:26:10,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:26:10,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-12-18 21:26:10,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=2855, Unknown=130, NotChecked=452, Total=3660 [2021-12-18 21:26:10,341 INFO L87 Difference]: Start difference. First operand 543 states and 666 transitions. Second operand has 51 states, 51 states have (on average 1.9607843137254901) internal successors, (100), 45 states have internal predecessors, (100), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-18 21:26:20,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:26:20,554 INFO L93 Difference]: Finished difference Result 654 states and 746 transitions. [2021-12-18 21:26:20,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-18 21:26:20,555 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.9607843137254901) internal successors, (100), 45 states have internal predecessors, (100), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 59 [2021-12-18 21:26:20,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:26:20,556 INFO L225 Difference]: With dead ends: 654 [2021-12-18 21:26:20,557 INFO L226 Difference]: Without dead ends: 654 [2021-12-18 21:26:20,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 98 SyntacticMatches, 9 SemanticMatches, 77 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1826 ImplicationChecksByTransitivity, 39.5s TimeCoverageRelationStatistics Valid=455, Invalid=4937, Unknown=174, NotChecked=596, Total=6162 [2021-12-18 21:26:20,557 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 1260 mSDsluCounter, 2639 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1268 SdHoareTripleChecker+Valid, 2811 SdHoareTripleChecker+Invalid, 3579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2023 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-18 21:26:20,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1268 Valid, 2811 Invalid, 3579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1430 Invalid, 0 Unknown, 2023 Unchecked, 2.3s Time] [2021-12-18 21:26:20,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2021-12-18 21:26:20,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 528. [2021-12-18 21:26:20,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 441 states have (on average 1.3582766439909297) internal successors, (599), 497 states have internal predecessors, (599), 30 states have call successors, (30), 14 states have call predecessors, (30), 13 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-18 21:26:20,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 648 transitions. [2021-12-18 21:26:20,563 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 648 transitions. Word has length 59 [2021-12-18 21:26:20,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:26:20,567 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 648 transitions. [2021-12-18 21:26:20,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.9607843137254901) internal successors, (100), 45 states have internal predecessors, (100), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-18 21:26:20,567 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 648 transitions. [2021-12-18 21:26:20,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-18 21:26:20,568 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:26:20,568 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:26:20,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (44)] Forceful destruction successful, exit code 0 [2021-12-18 21:26:20,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-12-18 21:26:21,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:26:21,008 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:26:21,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:26:21,008 INFO L85 PathProgramCache]: Analyzing trace with hash 297155200, now seen corresponding path program 1 times [2021-12-18 21:26:21,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:26:21,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840298935] [2021-12-18 21:26:21,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:26:21,009 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:26:21,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:26:21,010 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:26:21,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-12-18 21:26:21,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:26:21,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 107 conjunts are in the unsatisfiable core [2021-12-18 21:26:21,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:26:21,792 INFO L354 Elim1Store]: treesize reduction 45, result has 45.1 percent of original size [2021-12-18 21:26:21,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 60 [2021-12-18 21:26:21,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:26:21,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:26:21,999 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 7 treesize of output 3 [2021-12-18 21:26:22,040 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 7 treesize of output 3 [2021-12-18 21:26:24,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:24,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 89 [2021-12-18 21:26:24,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:24,297 INFO L354 Elim1Store]: treesize reduction 44, result has 6.4 percent of original size [2021-12-18 21:26:24,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 100 treesize of output 91 [2021-12-18 21:26:24,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:24,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 72 [2021-12-18 21:26:24,325 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-12-18 21:26:24,326 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 49 [2021-12-18 21:26:24,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:24,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2021-12-18 21:26:24,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:24,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-18 21:26:24,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-18 21:26:24,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2021-12-18 21:26:24,636 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:26:24,637 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 70 treesize of output 61 [2021-12-18 21:26:24,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-12-18 21:26:25,062 INFO L354 Elim1Store]: treesize reduction 16, result has 56.8 percent of original size [2021-12-18 21:26:25,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 42 treesize of output 48 [2021-12-18 21:26:25,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 44 [2021-12-18 21:26:25,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2021-12-18 21:26:25,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:25,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 3 [2021-12-18 21:26:25,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:25,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2021-12-18 21:26:27,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:27,175 INFO L354 Elim1Store]: treesize reduction 78, result has 17.9 percent of original size [2021-12-18 21:26:27,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 138 treesize of output 92 [2021-12-18 21:26:27,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:27,228 INFO L354 Elim1Store]: treesize reduction 42, result has 10.6 percent of original size [2021-12-18 21:26:27,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 122 treesize of output 109 [2021-12-18 21:26:27,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:27,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 72 [2021-12-18 21:26:27,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:27,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:27,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 51 [2021-12-18 21:26:27,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:27,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 35 [2021-12-18 21:26:27,397 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-18 21:26:27,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 68 [2021-12-18 21:26:27,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-12-18 21:26:27,448 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-12-18 21:26:27,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 195 treesize of output 150 [2021-12-18 21:26:27,460 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:26:27,462 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 141 treesize of output 136 [2021-12-18 21:26:28,419 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 102 treesize of output 78 [2021-12-18 21:26:29,000 INFO L354 Elim1Store]: treesize reduction 34, result has 8.1 percent of original size [2021-12-18 21:26:29,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 115 treesize of output 45 [2021-12-18 21:26:29,135 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:26:29,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 21:26:29,838 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3297 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3296 (Array (_ BitVec 32) (_ BitVec 32)))) (not (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3296)) (.cse2 (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))) (let ((.cse1 (select (select .cse0 |c_~#gl_list~0.base|) .cse2))) (= (select (select .cse0 .cse1) (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3297) |c_~#gl_list~0.base|) .cse2) (_ bv4 32))) .cse1))))) is different from false [2021-12-18 21:26:31,050 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3318 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3317 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3314 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3315 (_ BitVec 32)) (v_ArrVal_3316 (_ BitVec 32)) (v_ArrVal_3297 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3296 (Array (_ BitVec 32) (_ BitVec 32)))) (not (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (let ((.cse0 (store (let ((.cse5 (store (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) (bvadd (select (select |c_#memory_$Pointer$.offset| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) (_ bv4 32)) |c_ULTIMATE.start_gl_insert_~node~1#1.base|)) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3317))) (store .cse5 |c_~#gl_list~0.base| (store (select .cse5 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_3316))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3296)) (.cse4 (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))) (let ((.cse1 (select (select .cse0 |c_~#gl_list~0.base|) .cse4))) (= (select (select .cse0 .cse1) (bvadd (select (select (store (let ((.cse2 (store (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_3314) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3318))) (store .cse2 |c_~#gl_list~0.base| (store (select .cse2 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_3315))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3297) |c_~#gl_list~0.base|) .cse4) (_ bv4 32))) .cse1)))))) is different from false [2021-12-18 21:26:31,057 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:26:31,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840298935] [2021-12-18 21:26:31,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840298935] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 21:26:31,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1864359505] [2021-12-18 21:26:31,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:26:31,058 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-18 21:26:31,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-18 21:26:31,059 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-18 21:26:31,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (46)] Waiting until timeout for monitored process [2021-12-18 21:26:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:26:33,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 124 conjunts are in the unsatisfiable core [2021-12-18 21:26:33,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:26:33,906 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-18 21:26:33,906 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 19 treesize of output 26 [2021-12-18 21:26:34,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:26:34,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:26:34,183 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 7 treesize of output 3 [2021-12-18 21:26:34,192 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 7 treesize of output 3 [2021-12-18 21:26:37,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:37,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 89 [2021-12-18 21:26:37,500 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-12-18 21:26:37,501 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 49 [2021-12-18 21:26:37,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:37,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 39 [2021-12-18 21:26:37,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:37,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 28 [2021-12-18 21:26:37,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:37,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 25 [2021-12-18 21:26:37,536 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-18 21:26:37,537 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 35 [2021-12-18 21:26:37,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-18 21:26:37,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-18 21:26:38,053 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:26:38,054 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 62 treesize of output 57 [2021-12-18 21:26:38,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2021-12-18 21:26:38,386 INFO L354 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2021-12-18 21:26:38,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 30 [2021-12-18 21:26:38,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-18 21:26:38,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2021-12-18 21:26:38,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:38,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 8 [2021-12-18 21:26:38,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:38,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-12-18 21:26:40,595 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 21 [2021-12-18 21:26:43,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:43,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:43,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:43,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 100 [2021-12-18 21:26:43,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:43,184 INFO L354 Elim1Store]: treesize reduction 46, result has 9.8 percent of original size [2021-12-18 21:26:43,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 128 treesize of output 119 [2021-12-18 21:26:43,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:43,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 76 [2021-12-18 21:26:43,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:43,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:43,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 62 [2021-12-18 21:26:43,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:43,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 44 [2021-12-18 21:26:43,576 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-18 21:26:43,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 44 [2021-12-18 21:26:43,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:43,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-12-18 21:26:43,670 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-12-18 21:26:43,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 76 [2021-12-18 21:26:43,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 50 [2021-12-18 21:26:45,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:26:45,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-12-18 21:26:45,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:26:45,686 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-18 21:26:45,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 25 [2021-12-18 21:26:45,912 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:26:45,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 21:26:47,856 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3466 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3467 (_ BitVec 32))) (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base|) (bvadd |c_ULTIMATE.start_gl_insert_~node~1#1.offset| (_ bv16 32)) v_ArrVal_3467))) (.cse5 (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3466)) (.cse0 (select (select .cse1 |c_~#gl_list~0.base|) .cse5))) (let ((.cse3 (bvadd .cse0 (_ bv4 32))) (.cse2 (select (select .cse4 |c_~#gl_list~0.base|) .cse5))) (or (not (= .cse0 (select (select .cse1 .cse2) .cse3))) (not (= (select (select .cse4 .cse2) .cse3) .cse2))))))) is different from false [2021-12-18 21:26:47,891 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3464 (_ BitVec 32)) (v_ArrVal_3466 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3467 (_ BitVec 32))) (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base|) (bvadd |c_ULTIMATE.start_gl_insert_~node~1#1.offset| (_ bv12 32)) v_ArrVal_3464) (bvadd |c_ULTIMATE.start_gl_insert_~node~1#1.offset| (_ bv16 32)) v_ArrVal_3467))) (.cse5 (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))) (let ((.cse3 (select (select .cse4 |c_~#gl_list~0.base|) .cse5)) (.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3466))) (let ((.cse1 (select (select .cse0 |c_~#gl_list~0.base|) .cse5)) (.cse2 (bvadd .cse3 (_ bv4 32)))) (or (not (= (select (select .cse0 .cse1) .cse2) .cse1)) (not (= .cse3 (select (select .cse4 .cse1) .cse2)))))))) is different from false [2021-12-18 21:26:51,533 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:26:51,534 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 665 treesize of output 593 [2021-12-18 21:26:52,138 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_61 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3464 (_ BitVec 32)) (v_ArrVal_3490 (_ BitVec 32)) (v_ArrVal_3491 (_ BitVec 32)) (v_ArrVal_3488 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3466 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3487 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3467 (_ BitVec 32))) (let ((.cse7 (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (let ((.cse4 (let ((.cse8 (let ((.cse9 (store (store |c_#memory_$Pointer$.offset| .cse7 v_ArrVal_3488) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_arrayElimArr_61))) (store .cse9 |c_~#gl_list~0.base| (store (select .cse9 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_3490))))) (store .cse8 |c_ULTIMATE.start_gl_insert_~node~1#1.base| (store (store (select .cse8 |c_ULTIMATE.start_gl_insert_~node~1#1.base|) (bvadd |c_ULTIMATE.start_gl_insert_~node~1#1.offset| (_ bv12 32)) v_ArrVal_3464) (bvadd |c_ULTIMATE.start_gl_insert_~node~1#1.offset| (_ bv16 32)) v_ArrVal_3467)))) (.cse5 (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))) (let ((.cse3 (select (select .cse4 |c_~#gl_list~0.base|) .cse5)) (.cse0 (store (let ((.cse6 (store (store |c_#memory_$Pointer$.base| .cse7 (store (select |c_#memory_$Pointer$.base| .cse7) (bvadd (select (select |c_#memory_$Pointer$.offset| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) (_ bv4 32)) |c_ULTIMATE.start_gl_insert_~node~1#1.base|)) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3487))) (store .cse6 |c_~#gl_list~0.base| (store (select .cse6 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_3491))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3466))) (let ((.cse1 (select (select .cse0 |c_~#gl_list~0.base|) .cse5)) (.cse2 (bvadd .cse3 (_ bv4 32)))) (or (not (= (select (select .cse0 .cse1) .cse2) .cse1)) (not (= .cse3 (select (select .cse4 .cse1) .cse2))) (not (= (select v_arrayElimArr_61 (bvadd |c_ULTIMATE.start_gl_insert_~node~1#1.offset| (_ bv8 32))) |c_~#gl_list~0.offset|)))))))) is different from false [2021-12-18 21:26:52,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1864359505] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 21:26:52,184 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 21:26:52,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2021-12-18 21:26:52,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629322138] [2021-12-18 21:26:52,185 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 21:26:52,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-12-18 21:26:52,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:26:52,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-12-18 21:26:52,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=4057, Unknown=138, NotChecked=670, Total=5112 [2021-12-18 21:26:52,186 INFO L87 Difference]: Start difference. First operand 528 states and 648 transitions. Second operand has 55 states, 55 states have (on average 2.018181818181818) internal successors, (111), 49 states have internal predecessors, (111), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-18 21:27:16,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:27:16,715 INFO L93 Difference]: Finished difference Result 620 states and 710 transitions. [2021-12-18 21:27:16,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-18 21:27:16,716 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.018181818181818) internal successors, (111), 49 states have internal predecessors, (111), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 62 [2021-12-18 21:27:16,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:27:16,718 INFO L225 Difference]: With dead ends: 620 [2021-12-18 21:27:16,718 INFO L226 Difference]: Without dead ends: 620 [2021-12-18 21:27:16,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 104 SyntacticMatches, 7 SemanticMatches, 92 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 2390 ImplicationChecksByTransitivity, 31.2s TimeCoverageRelationStatistics Valid=493, Invalid=7143, Unknown=216, NotChecked=890, Total=8742 [2021-12-18 21:27:16,724 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 1076 mSDsluCounter, 2998 mSDsCounter, 0 mSdLazyCounter, 4960 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 3230 SdHoareTripleChecker+Invalid, 9323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 4960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4255 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2021-12-18 21:27:16,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1076 Valid, 3230 Invalid, 9323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 4960 Invalid, 0 Unknown, 4255 Unchecked, 9.0s Time] [2021-12-18 21:27:16,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2021-12-18 21:27:16,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 528. [2021-12-18 21:27:16,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 441 states have (on average 1.3537414965986394) internal successors, (597), 497 states have internal predecessors, (597), 30 states have call successors, (30), 14 states have call predecessors, (30), 13 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-18 21:27:16,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 646 transitions. [2021-12-18 21:27:16,754 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 646 transitions. Word has length 62 [2021-12-18 21:27:16,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:27:16,754 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 646 transitions. [2021-12-18 21:27:16,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.018181818181818) internal successors, (111), 49 states have internal predecessors, (111), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-18 21:27:16,755 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 646 transitions. [2021-12-18 21:27:16,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-18 21:27:16,755 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:27:16,755 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:27:16,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-12-18 21:27:16,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (46)] Forceful destruction successful, exit code 0 [2021-12-18 21:27:17,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2021-12-18 21:27:17,156 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting inspectErr11REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:27:17,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:27:17,157 INFO L85 PathProgramCache]: Analyzing trace with hash 338475136, now seen corresponding path program 1 times [2021-12-18 21:27:17,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:27:17,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1300898988] [2021-12-18 21:27:17,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:27:17,157 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:27:17,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:27:17,159 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:27:17,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-12-18 21:27:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:27:17,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 108 conjunts are in the unsatisfiable core [2021-12-18 21:27:17,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:27:17,923 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-12-18 21:27:17,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2021-12-18 21:27:17,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 21:27:18,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:27:18,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:27:18,071 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 7 treesize of output 3 [2021-12-18 21:27:18,094 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 7 treesize of output 3 [2021-12-18 21:27:19,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:27:19,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 89 [2021-12-18 21:27:19,617 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-12-18 21:27:19,618 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 49 [2021-12-18 21:27:19,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:27:19,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 39 [2021-12-18 21:27:19,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:27:19,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 28 [2021-12-18 21:27:19,647 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-18 21:27:19,647 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 33 [2021-12-18 21:27:19,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:27:19,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2021-12-18 21:27:19,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-18 21:27:19,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:27:19,981 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:27:19,981 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 71 treesize of output 62 [2021-12-18 21:27:19,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2021-12-18 21:27:20,293 INFO L354 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2021-12-18 21:27:20,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2021-12-18 21:27:20,348 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-12-18 21:27:20,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 37 [2021-12-18 21:27:20,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 45 [2021-12-18 21:27:20,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:27:20,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:27:20,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2021-12-18 21:27:20,657 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 9 treesize of output 3 [2021-12-18 21:27:21,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:27:21,997 INFO L354 Elim1Store]: treesize reduction 66, result has 14.3 percent of original size [2021-12-18 21:27:21,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 136 treesize of output 123 [2021-12-18 21:27:22,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:27:22,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 93 [2021-12-18 21:27:22,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:27:22,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:27:22,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2021-12-18 21:27:22,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:27:22,017 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 16 treesize of output 20 [2021-12-18 21:27:22,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 35 [2021-12-18 21:27:22,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:27:22,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2021-12-18 21:27:22,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2021-12-18 21:27:22,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:27:22,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-18 21:27:22,687 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 33 treesize of output 17 [2021-12-18 21:27:23,038 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:27:23,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 21:27:24,126 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_3633 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3634 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3633) |c_~#gl_list~0.base|) .cse0) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3634) |c_~#gl_list~0.base|) .cse0))))) (forall ((v_ArrVal_3633 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3633) |c_~#gl_list~0.base|) (bvadd |c_~#gl_list~0.offset| (_ bv4 32))))) (bvule (bvadd .cse1 (_ bv8 32)) (bvadd .cse1 (_ bv12 32)))))) is different from false [2021-12-18 21:27:24,727 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_3633 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3651 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3652 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3656 (_ BitVec 32))) (let ((.cse0 (select (select (store (let ((.cse1 (store (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) v_ArrVal_3652) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3651))) (store .cse1 |c_~#gl_list~0.base| (store (select .cse1 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_3656))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3633) |c_~#gl_list~0.base|) (bvadd |c_~#gl_list~0.offset| (_ bv4 32))))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_3633 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3654 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3634 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3651 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3653 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3652 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3656 (_ BitVec 32)) (v_ArrVal_3655 (_ BitVec 32))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (.cse4 (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))) (bvule (bvadd (select (select (store (let ((.cse2 (store (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_3652) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3651))) (store .cse2 |c_~#gl_list~0.base| (store (select .cse2 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_3656))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3633) |c_~#gl_list~0.base|) .cse4) (_ bv12 32)) (select |c_#length| (select (select (store (let ((.cse5 (store (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_3653) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3654))) (store .cse5 |c_~#gl_list~0.base| (store (select .cse5 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_3655))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3634) |c_~#gl_list~0.base|) .cse4)))))) is different from false [2021-12-18 21:27:24,733 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:27:24,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1300898988] [2021-12-18 21:27:24,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1300898988] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 21:27:24,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1162429664] [2021-12-18 21:27:24,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:27:24,733 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-18 21:27:24,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-18 21:27:24,734 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-18 21:27:24,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (48)] Waiting until timeout for monitored process [2021-12-18 21:27:27,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:27:27,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 109 conjunts are in the unsatisfiable core [2021-12-18 21:27:27,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:27:27,632 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 [2021-12-18 21:27:27,656 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-18 21:27:27,657 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 19 treesize of output 26 [2021-12-18 21:27:27,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:27:27,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:27:28,041 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 7 treesize of output 3 [2021-12-18 21:27:28,065 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 7 treesize of output 3 [2021-12-18 21:27:31,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:27:31,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 89 [2021-12-18 21:27:31,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:27:31,118 INFO L354 Elim1Store]: treesize reduction 44, result has 6.4 percent of original size [2021-12-18 21:27:31,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 100 treesize of output 91 [2021-12-18 21:27:31,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:27:31,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 72 [2021-12-18 21:27:31,137 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-12-18 21:27:31,138 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 49 [2021-12-18 21:27:31,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:27:31,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2021-12-18 21:27:31,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:27:31,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2021-12-18 21:27:31,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:27:31,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-18 21:27:31,526 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:27:31,526 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 63 treesize of output 56 [2021-12-18 21:27:31,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2021-12-18 21:27:31,775 INFO L354 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2021-12-18 21:27:31,775 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 1 case distinctions, treesize of input 16 treesize of output 26 [2021-12-18 21:27:31,814 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-12-18 21:27:31,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 27 [2021-12-18 21:27:32,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:27:32,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 39 [2021-12-18 21:27:32,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:27:32,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2021-12-18 21:27:32,108 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 9 treesize of output 3 [2021-12-18 21:27:34,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:27:34,930 INFO L354 Elim1Store]: treesize reduction 66, result has 14.3 percent of original size [2021-12-18 21:27:34,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 128 treesize of output 117 [2021-12-18 21:27:34,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:27:34,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 89 [2021-12-18 21:27:34,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:27:34,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:27:34,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2021-12-18 21:27:34,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:27:34,952 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 16 treesize of output 20 [2021-12-18 21:27:34,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 35 [2021-12-18 21:27:35,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:27:35,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36 [2021-12-18 21:27:35,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36 [2021-12-18 21:27:35,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:27:35,807 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 [2021-12-18 21:27:35,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-18 21:27:36,245 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:27:36,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 21:27:36,538 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_3801 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3800 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3801) |c_~#gl_list~0.base|) .cse0) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3800) |c_~#gl_list~0.base|) .cse0))))) (forall ((v_ArrVal_3801 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3801) |c_~#gl_list~0.base|) (bvadd |c_~#gl_list~0.offset| (_ bv4 32))))) (bvule (bvadd .cse1 (_ bv8 32)) (bvadd .cse1 (_ bv12 32)))))) is different from false [2021-12-18 21:27:37,380 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_3823 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3801 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3820 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3819 (_ BitVec 32)) (v_ArrVal_3822 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3800 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3821 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3824 (_ BitVec 32))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (.cse2 (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))) (bvule (bvadd (select (select (store (let ((.cse0 (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_3822) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3821))) (store .cse0 |c_~#gl_list~0.base| (store (select .cse0 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_3819))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3801) |c_~#gl_list~0.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store (let ((.cse3 (store (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_3823) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3820))) (store .cse3 |c_~#gl_list~0.base| (store (select .cse3 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_3824))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3800) |c_~#gl_list~0.base|) .cse2))))) (forall ((v_ArrVal_3801 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3819 (_ BitVec 32)) (v_ArrVal_3822 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3821 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (let ((.cse5 (store (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) v_ArrVal_3822) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3821))) (store .cse5 |c_~#gl_list~0.base| (store (select .cse5 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_3819))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_3801) |c_~#gl_list~0.base|) (bvadd |c_~#gl_list~0.offset| (_ bv4 32))))) (bvule (bvadd .cse4 (_ bv8 32)) (bvadd .cse4 (_ bv12 32)))))) is different from false [2021-12-18 21:27:37,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1162429664] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 21:27:37,388 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 21:27:37,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 54 [2021-12-18 21:27:37,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098586397] [2021-12-18 21:27:37,391 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 21:27:37,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-12-18 21:27:37,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:27:37,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-12-18 21:27:37,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=3396, Unknown=150, NotChecked=492, Total=4290 [2021-12-18 21:27:37,394 INFO L87 Difference]: Start difference. First operand 528 states and 646 transitions. Second operand has 56 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 49 states have internal predecessors, (120), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-18 21:27:52,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:27:52,430 INFO L93 Difference]: Finished difference Result 631 states and 713 transitions. [2021-12-18 21:27:52,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-18 21:27:52,431 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 49 states have internal predecessors, (120), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 65 [2021-12-18 21:27:52,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:27:52,433 INFO L225 Difference]: With dead ends: 631 [2021-12-18 21:27:52,433 INFO L226 Difference]: Without dead ends: 631 [2021-12-18 21:27:52,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 120 SyntacticMatches, 6 SemanticMatches, 84 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1953 ImplicationChecksByTransitivity, 22.6s TimeCoverageRelationStatistics Valid=524, Invalid=5934, Unknown=200, NotChecked=652, Total=7310 [2021-12-18 21:27:52,434 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 842 mSDsluCounter, 2568 mSDsCounter, 0 mSdLazyCounter, 2236 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 2714 SdHoareTripleChecker+Invalid, 5357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3049 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-18 21:27:52,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [850 Valid, 2714 Invalid, 5357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2236 Invalid, 0 Unknown, 3049 Unchecked, 3.0s Time] [2021-12-18 21:27:52,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2021-12-18 21:27:52,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 528. [2021-12-18 21:27:52,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 441 states have (on average 1.3219954648526078) internal successors, (583), 497 states have internal predecessors, (583), 30 states have call successors, (30), 14 states have call predecessors, (30), 13 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-18 21:27:52,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 632 transitions. [2021-12-18 21:27:52,440 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 632 transitions. Word has length 65 [2021-12-18 21:27:52,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:27:52,441 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 632 transitions. [2021-12-18 21:27:52,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 49 states have internal predecessors, (120), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-18 21:27:52,441 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 632 transitions. [2021-12-18 21:27:52,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-18 21:27:52,441 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:27:52,442 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] [2021-12-18 21:27:52,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (48)] Forceful destruction successful, exit code 0 [2021-12-18 21:27:52,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-12-18 21:27:52,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:27:52,864 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting inspectErr20REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:27:52,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:27:52,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1797918788, now seen corresponding path program 1 times [2021-12-18 21:27:52,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:27:52,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1279977818] [2021-12-18 21:27:52,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:27:52,865 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:27:52,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:27:52,867 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:27:52,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-12-18 21:27:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:27:53,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 71 conjunts are in the unsatisfiable core [2021-12-18 21:27:53,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:27:53,445 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 21:27:53,445 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 13 treesize of output 13 [2021-12-18 21:27:53,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:27:53,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:27:53,512 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 7 treesize of output 3 [2021-12-18 21:27:53,516 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 7 treesize of output 3 [2021-12-18 21:28:00,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:28:00,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:28:00,997 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:28:01,023 INFO L354 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2021-12-18 21:28:01,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 210 treesize of output 94 [2021-12-18 21:28:01,038 INFO L354 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2021-12-18 21:28:01,038 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 63 [2021-12-18 21:28:01,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:28:01,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 34 [2021-12-18 21:28:01,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:28:01,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 37 [2021-12-18 21:28:01,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:28:01,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:28:01,186 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:28:01,188 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 21:28:01,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 48 [2021-12-18 21:28:01,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:28:01,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-12-18 21:28:01,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:28:01,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2021-12-18 21:28:01,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:28:01,227 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:28:01,229 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 21:28:01,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 42 [2021-12-18 21:28:01,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-18 21:28:02,673 INFO L354 Elim1Store]: treesize reduction 34, result has 17.1 percent of original size [2021-12-18 21:28:02,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 22 [2021-12-18 21:28:02,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:28:02,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:28:02,746 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:28:02,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1279977818] [2021-12-18 21:28:02,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1279977818] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:28:02,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:28:02,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-18 21:28:02,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483351324] [2021-12-18 21:28:02,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:28:02,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-18 21:28:02,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:28:02,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-18 21:28:02,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=330, Unknown=8, NotChecked=0, Total=380 [2021-12-18 21:28:02,747 INFO L87 Difference]: Start difference. First operand 528 states and 632 transitions. Second operand has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 17 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:28:04,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:28:04,883 INFO L93 Difference]: Finished difference Result 604 states and 705 transitions. [2021-12-18 21:28:04,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-18 21:28:04,884 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 17 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2021-12-18 21:28:04,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:28:04,885 INFO L225 Difference]: With dead ends: 604 [2021-12-18 21:28:04,885 INFO L226 Difference]: Without dead ends: 604 [2021-12-18 21:28:04,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=79, Invalid=560, Unknown=11, NotChecked=0, Total=650 [2021-12-18 21:28:04,886 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 68 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1681 SdHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1114 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-18 21:28:04,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 1681 Invalid, 1684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 561 Invalid, 0 Unknown, 1114 Unchecked, 1.4s Time] [2021-12-18 21:28:04,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-12-18 21:28:04,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 570. [2021-12-18 21:28:04,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 483 states have (on average 1.2960662525879918) internal successors, (626), 538 states have internal predecessors, (626), 30 states have call successors, (30), 15 states have call predecessors, (30), 13 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-18 21:28:04,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 675 transitions. [2021-12-18 21:28:04,891 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 675 transitions. Word has length 65 [2021-12-18 21:28:04,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:28:04,891 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 675 transitions. [2021-12-18 21:28:04,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 17 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:28:04,891 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 675 transitions. [2021-12-18 21:28:04,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-18 21:28:04,892 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:28:04,892 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] [2021-12-18 21:28:04,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-12-18 21:28:05,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:28:05,092 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting inspectErr21REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:28:05,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:28:05,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1797918789, now seen corresponding path program 1 times [2021-12-18 21:28:05,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:28:05,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1437115501] [2021-12-18 21:28:05,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:28:05,093 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:28:05,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:28:05,094 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:28:05,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-12-18 21:28:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:28:05,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 78 conjunts are in the unsatisfiable core [2021-12-18 21:28:05,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:28:05,554 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 21:28:05,555 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 13 treesize of output 13 [2021-12-18 21:28:05,566 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 [2021-12-18 21:28:05,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:28:05,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:28:05,697 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 7 treesize of output 3 [2021-12-18 21:28:05,702 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 7 treesize of output 3 [2021-12-18 21:28:39,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:28:39,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:28:39,792 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:28:39,843 INFO L354 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2021-12-18 21:28:39,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 290 treesize of output 158 [2021-12-18 21:28:39,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:28:39,868 INFO L354 Elim1Store]: treesize reduction 17, result has 34.6 percent of original size [2021-12-18 21:28:39,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 134 treesize of output 52 [2021-12-18 21:28:42,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:28:42,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:28:42,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:28:42,096 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 21:28:42,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2021-12-18 21:28:42,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:28:42,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:28:42,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-12-18 21:28:44,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:28:44,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:28:44,239 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 21:28:44,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 48 [2021-12-18 21:28:44,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:28:44,246 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:28:44,248 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-12-18 21:28:44,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 42 [2021-12-18 21:28:47,878 INFO L354 Elim1Store]: treesize reduction 25, result has 32.4 percent of original size [2021-12-18 21:28:47,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 35 [2021-12-18 21:28:47,882 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 21:28:47,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 14 [2021-12-18 21:28:47,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:28:47,990 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:28:47,990 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:28:47,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1437115501] [2021-12-18 21:28:47,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1437115501] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:28:47,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:28:47,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-18 21:28:47,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009023975] [2021-12-18 21:28:47,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:28:47,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-18 21:28:47,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:28:47,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-18 21:28:47,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=324, Unknown=14, NotChecked=0, Total=380 [2021-12-18 21:28:47,991 INFO L87 Difference]: Start difference. First operand 570 states and 675 transitions. Second operand has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 17 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:29:22,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:29:22,907 INFO L93 Difference]: Finished difference Result 613 states and 706 transitions. [2021-12-18 21:29:22,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-18 21:29:22,907 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 17 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2021-12-18 21:29:22,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:29:22,909 INFO L225 Difference]: With dead ends: 613 [2021-12-18 21:29:22,909 INFO L226 Difference]: Without dead ends: 613 [2021-12-18 21:29:22,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 70.1s TimeCoverageRelationStatistics Valid=142, Invalid=886, Unknown=28, NotChecked=0, Total=1056 [2021-12-18 21:29:22,909 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 319 mSDsluCounter, 1247 mSDsCounter, 0 mSdLazyCounter, 1999 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 1391 SdHoareTripleChecker+Invalid, 2582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 550 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-12-18 21:29:22,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 1391 Invalid, 2582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1999 Invalid, 0 Unknown, 550 Unchecked, 5.5s Time] [2021-12-18 21:29:22,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-12-18 21:29:22,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 570. [2021-12-18 21:29:22,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 483 states have (on average 1.2919254658385093) internal successors, (624), 538 states have internal predecessors, (624), 30 states have call successors, (30), 15 states have call predecessors, (30), 13 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-18 21:29:22,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 673 transitions. [2021-12-18 21:29:22,930 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 673 transitions. Word has length 65 [2021-12-18 21:29:22,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:29:22,931 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 673 transitions. [2021-12-18 21:29:22,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 17 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:29:22,931 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 673 transitions. [2021-12-18 21:29:22,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-18 21:29:22,931 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:29:22,931 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:29:22,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-12-18 21:29:23,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:29:23,142 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:29:23,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:29:23,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1070334451, now seen corresponding path program 1 times [2021-12-18 21:29:23,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:29:23,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1632630882] [2021-12-18 21:29:23,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:29:23,143 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:29:23,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:29:23,144 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:29:23,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-12-18 21:29:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:29:23,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 119 conjunts are in the unsatisfiable core [2021-12-18 21:29:23,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:29:23,883 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-12-18 21:29:23,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2021-12-18 21:29:23,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:29:24,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:29:24,066 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 7 treesize of output 3 [2021-12-18 21:29:24,075 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 7 treesize of output 3 [2021-12-18 21:29:25,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:25,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 95 [2021-12-18 21:29:25,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:25,958 INFO L354 Elim1Store]: treesize reduction 44, result has 6.4 percent of original size [2021-12-18 21:29:25,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 106 treesize of output 97 [2021-12-18 21:29:25,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:25,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 78 [2021-12-18 21:29:25,992 INFO L354 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2021-12-18 21:29:25,992 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 53 [2021-12-18 21:29:25,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:26,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 30 [2021-12-18 21:29:26,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:26,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 27 [2021-12-18 21:29:26,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:26,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2021-12-18 21:29:26,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:26,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-12-18 21:29:26,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:26,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:26,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:26,354 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:29:26,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 126 treesize of output 74 [2021-12-18 21:29:26,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:26,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 52 [2021-12-18 21:29:26,604 INFO L354 Elim1Store]: treesize reduction 12, result has 61.3 percent of original size [2021-12-18 21:29:26,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 39 [2021-12-18 21:29:26,791 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-18 21:29:26,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 82 treesize of output 76 [2021-12-18 21:29:26,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 39 [2021-12-18 21:29:26,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:26,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:26,957 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:29:26,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 25 [2021-12-18 21:29:26,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:26,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2021-12-18 21:29:40,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:40,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:40,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:40,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:40,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:40,691 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:29:40,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 198 treesize of output 130 [2021-12-18 21:29:40,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:40,732 INFO L354 Elim1Store]: treesize reduction 42, result has 10.6 percent of original size [2021-12-18 21:29:40,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 159 treesize of output 140 [2021-12-18 21:29:40,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:40,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 91 [2021-12-18 21:29:40,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:40,765 INFO L354 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2021-12-18 21:29:40,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 74 [2021-12-18 21:29:40,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:40,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 42 [2021-12-18 21:29:40,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:40,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2021-12-18 21:29:40,994 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-18 21:29:40,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 67 [2021-12-18 21:29:41,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 34 [2021-12-18 21:29:41,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 34 [2021-12-18 21:29:41,063 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-18 21:29:41,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 67 [2021-12-18 21:29:42,365 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:29:42,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:42,373 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-18 21:29:42,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 31 [2021-12-18 21:29:42,383 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-12-18 21:29:42,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 18 [2021-12-18 21:29:42,517 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:29:42,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 21:29:43,755 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_4126 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4125 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4125)) (.cse1 (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))) (let ((.cse2 (bvadd (select (select .cse0 |c_~#gl_list~0.base|) .cse1) (_ bv8 32)))) (= (select (select .cse0 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4126) |c_~#gl_list~0.base|) .cse1)) .cse2) .cse2)))) (forall ((v_ArrVal_4126 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4125 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4126)) (.cse5 (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))) (let ((.cse4 (select (select .cse3 |c_~#gl_list~0.base|) .cse5))) (= (select (select .cse3 .cse4) (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4125) |c_~#gl_list~0.base|) .cse5) (_ bv8 32))) .cse4))))) is different from false [2021-12-18 21:29:45,998 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_4147 (_ BitVec 32)) (v_ArrVal_4145 (_ BitVec 32)) (v_ArrVal_4146 (_ BitVec 32)) (v_ArrVal_4149 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4150 (_ BitVec 32)) (v_ArrVal_4148 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4126 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4125 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (.cse4 (bvadd (select (select |c_#memory_$Pointer$.offset| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) (_ bv4 32)))) (let ((.cse0 (store (let ((.cse6 (store (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) .cse4 v_ArrVal_4150)) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4148))) (store .cse6 |c_~#gl_list~0.base| (store (select .cse6 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_4146))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4126)) (.cse5 (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))) (let ((.cse1 (select (select .cse0 |c_~#gl_list~0.base|) .cse5))) (= (select (select .cse0 .cse1) (bvadd (select (select (store (let ((.cse2 (store (store |c_#memory_$Pointer$.offset| .cse3 (store (select |c_#memory_$Pointer$.offset| .cse3) .cse4 v_ArrVal_4145)) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4149))) (store .cse2 |c_~#gl_list~0.base| (store (select .cse2 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_4147))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4125) |c_~#gl_list~0.base|) .cse5) (_ bv8 32))) .cse1))))) (forall ((v_ArrVal_4147 (_ BitVec 32)) (v_ArrVal_4145 (_ BitVec 32)) (v_ArrVal_4146 (_ BitVec 32)) (v_ArrVal_4149 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4150 (_ BitVec 32)) (v_ArrVal_4148 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4126 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4125 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse9 (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (.cse10 (bvadd (select (select |c_#memory_$Pointer$.offset| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) (_ bv4 32)))) (let ((.cse7 (store (let ((.cse13 (store (store |c_#memory_$Pointer$.offset| .cse9 (store (select |c_#memory_$Pointer$.offset| .cse9) .cse10 v_ArrVal_4145)) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4149))) (store .cse13 |c_~#gl_list~0.base| (store (select .cse13 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_4147))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4125)) (.cse11 (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))) (let ((.cse12 (bvadd (select (select .cse7 |c_~#gl_list~0.base|) .cse11) (_ bv8 32)))) (= (select (select .cse7 (select (select (store (let ((.cse8 (store (store |c_#memory_$Pointer$.base| .cse9 (store (select |c_#memory_$Pointer$.base| .cse9) .cse10 v_ArrVal_4150)) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4148))) (store .cse8 |c_~#gl_list~0.base| (store (select .cse8 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_4146))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4126) |c_~#gl_list~0.base|) .cse11)) .cse12) .cse12)))))) is different from false [2021-12-18 21:29:46,009 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:29:46,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1632630882] [2021-12-18 21:29:46,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1632630882] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 21:29:46,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [626607030] [2021-12-18 21:29:46,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:29:46,009 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-18 21:29:46,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-18 21:29:46,011 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-18 21:29:46,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (52)] Waiting until timeout for monitored process [2021-12-18 21:29:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:29:47,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 121 conjunts are in the unsatisfiable core [2021-12-18 21:29:47,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:29:47,801 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-18 21:29:47,802 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 19 treesize of output 26 [2021-12-18 21:29:47,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:29:47,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:29:48,100 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 7 treesize of output 3 [2021-12-18 21:29:48,105 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 7 treesize of output 3 [2021-12-18 21:29:57,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:57,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 95 [2021-12-18 21:29:57,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:57,297 INFO L354 Elim1Store]: treesize reduction 44, result has 6.4 percent of original size [2021-12-18 21:29:57,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 106 treesize of output 97 [2021-12-18 21:29:57,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:57,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 78 [2021-12-18 21:29:57,328 INFO L354 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2021-12-18 21:29:57,328 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 53 [2021-12-18 21:29:57,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:57,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 30 [2021-12-18 21:29:57,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:57,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 27 [2021-12-18 21:29:57,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:57,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2021-12-18 21:29:57,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:57,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-12-18 21:29:58,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:58,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:58,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:58,115 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:29:58,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 98 treesize of output 70 [2021-12-18 21:29:58,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:58,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 48 [2021-12-18 21:29:58,631 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-12-18 21:29:58,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-12-18 21:29:59,049 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-18 21:29:59,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 58 [2021-12-18 21:29:59,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 37 [2021-12-18 21:29:59,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:59,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:59,126 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:29:59,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 21 [2021-12-18 21:29:59,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:29:59,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2021-12-18 21:30:05,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:30:05,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:30:05,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:30:05,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:30:05,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:30:05,948 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:30:05,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 178 treesize of output 123 [2021-12-18 21:30:05,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:30:05,998 INFO L354 Elim1Store]: treesize reduction 42, result has 10.6 percent of original size [2021-12-18 21:30:05,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 148 treesize of output 125 [2021-12-18 21:30:06,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:30:06,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 100 [2021-12-18 21:30:06,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:30:06,027 INFO L354 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2021-12-18 21:30:06,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 89 [2021-12-18 21:30:06,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:30:06,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 42 [2021-12-18 21:30:06,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:30:06,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2021-12-18 21:30:06,302 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-18 21:30:06,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 64 [2021-12-18 21:30:06,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 34 [2021-12-18 21:30:06,544 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-12-18 21:30:06,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 80 [2021-12-18 21:30:06,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2021-12-18 21:30:08,498 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:30:08,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:30:08,507 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-18 21:30:08,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 79 treesize of output 35 [2021-12-18 21:30:08,532 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-12-18 21:30:08,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 18 [2021-12-18 21:30:08,674 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:30:08,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 21:30:08,875 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_4299 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4298 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4299)) (.cse2 (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))) (let ((.cse1 (select (select .cse0 |c_~#gl_list~0.base|) .cse2))) (= (select (select .cse0 .cse1) (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4298) |c_~#gl_list~0.base|) .cse2) (_ bv8 32))) .cse1)))) (forall ((v_ArrVal_4299 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4298 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4298)) (.cse4 (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))) (let ((.cse5 (bvadd (select (select .cse3 |c_~#gl_list~0.base|) .cse4) (_ bv8 32)))) (= (select (select .cse3 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4299) |c_~#gl_list~0.base|) .cse4)) .cse5) .cse5))))) is different from false [2021-12-18 21:30:11,607 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_4319 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4318 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4321 (_ BitVec 32)) (v_ArrVal_4322 (_ BitVec 32)) (v_ArrVal_4320 (_ BitVec 32)) (v_ArrVal_4299 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4298 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (.cse3 (bvadd (select (select |c_#memory_$Pointer$.offset| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) (_ bv4 32)))) (let ((.cse0 (store (let ((.cse6 (store (store |c_#memory_$Pointer$.offset| .cse2 (store (select |c_#memory_$Pointer$.offset| .cse2) .cse3 v_ArrVal_4321)) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4318))) (store .cse6 |c_~#gl_list~0.base| (store (select .cse6 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_4320))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4298)) (.cse4 (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))) (let ((.cse5 (bvadd (select (select .cse0 |c_~#gl_list~0.base|) .cse4) (_ bv8 32)))) (= (select (select .cse0 (select (select (store (let ((.cse1 (store (store |c_#memory_$Pointer$.base| .cse2 (store (select |c_#memory_$Pointer$.base| .cse2) .cse3 |c_ULTIMATE.start_gl_insert_~node~1#1.base|)) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4319))) (store .cse1 |c_~#gl_list~0.base| (store (select .cse1 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_4322))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4299) |c_~#gl_list~0.base|) .cse4)) .cse5) .cse5))))) (forall ((v_ArrVal_4319 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4318 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4321 (_ BitVec 32)) (v_ArrVal_4322 (_ BitVec 32)) (v_ArrVal_4320 (_ BitVec 32)) (v_ArrVal_4299 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4298 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse10 (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (.cse11 (bvadd (select (select |c_#memory_$Pointer$.offset| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) (_ bv4 32)))) (let ((.cse7 (store (let ((.cse13 (store (store |c_#memory_$Pointer$.base| .cse10 (store (select |c_#memory_$Pointer$.base| .cse10) .cse11 |c_ULTIMATE.start_gl_insert_~node~1#1.base|)) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4319))) (store .cse13 |c_~#gl_list~0.base| (store (select .cse13 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_4322))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4299)) (.cse12 (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))) (let ((.cse8 (select (select .cse7 |c_~#gl_list~0.base|) .cse12))) (= (select (select .cse7 .cse8) (bvadd (select (select (store (let ((.cse9 (store (store |c_#memory_$Pointer$.offset| .cse10 (store (select |c_#memory_$Pointer$.offset| .cse10) .cse11 v_ArrVal_4321)) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4318))) (store .cse9 |c_~#gl_list~0.base| (store (select .cse9 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_4320))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4298) |c_~#gl_list~0.base|) .cse12) (_ bv8 32))) .cse8)))))) is different from false [2021-12-18 21:30:11,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [626607030] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 21:30:11,626 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 21:30:11,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 55 [2021-12-18 21:30:11,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026023940] [2021-12-18 21:30:11,626 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 21:30:11,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-12-18 21:30:11,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:30:11,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-12-18 21:30:11,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=3550, Unknown=141, NotChecked=500, Total=4422 [2021-12-18 21:30:11,627 INFO L87 Difference]: Start difference. First operand 570 states and 673 transitions. Second operand has 56 states, 56 states have (on average 2.142857142857143) internal successors, (120), 48 states have internal predecessors, (120), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-18 21:30:28,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:30:28,616 INFO L93 Difference]: Finished difference Result 670 states and 748 transitions. [2021-12-18 21:30:28,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-18 21:30:28,616 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.142857142857143) internal successors, (120), 48 states have internal predecessors, (120), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 68 [2021-12-18 21:30:28,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:30:28,618 INFO L225 Difference]: With dead ends: 670 [2021-12-18 21:30:28,618 INFO L226 Difference]: Without dead ends: 670 [2021-12-18 21:30:28,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 132 SyntacticMatches, 9 SemanticMatches, 90 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 2449 ImplicationChecksByTransitivity, 44.5s TimeCoverageRelationStatistics Valid=565, Invalid=6906, Unknown=201, NotChecked=700, Total=8372 [2021-12-18 21:30:28,619 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 1194 mSDsluCounter, 3120 mSDsCounter, 0 mSdLazyCounter, 4599 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 3319 SdHoareTripleChecker+Invalid, 6400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 4599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1698 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-12-18 21:30:28,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1198 Valid, 3319 Invalid, 6400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 4599 Invalid, 0 Unknown, 1698 Unchecked, 7.7s Time] [2021-12-18 21:30:28,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-12-18 21:30:28,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 570. [2021-12-18 21:30:28,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 483 states have (on average 1.2836438923395446) internal successors, (620), 538 states have internal predecessors, (620), 30 states have call successors, (30), 15 states have call predecessors, (30), 13 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-18 21:30:28,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 669 transitions. [2021-12-18 21:30:28,624 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 669 transitions. Word has length 68 [2021-12-18 21:30:28,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:30:28,624 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 669 transitions. [2021-12-18 21:30:28,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.142857142857143) internal successors, (120), 48 states have internal predecessors, (120), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-18 21:30:28,625 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 669 transitions. [2021-12-18 21:30:28,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-18 21:30:28,625 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:30:28,625 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, 1] [2021-12-18 21:30:28,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-12-18 21:30:28,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (52)] Forceful destruction successful, exit code 0 [2021-12-18 21:30:29,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2021-12-18 21:30:29,036 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:30:29,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:30:29,036 INFO L85 PathProgramCache]: Analyzing trace with hash -738282855, now seen corresponding path program 1 times [2021-12-18 21:30:29,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:30:29,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398838393] [2021-12-18 21:30:29,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:30:29,037 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:30:29,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:30:29,039 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:30:29,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-12-18 21:30:29,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:30:29,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 78 conjunts are in the unsatisfiable core [2021-12-18 21:30:29,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:30:29,641 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 21:30:29,641 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 13 treesize of output 13 [2021-12-18 21:30:29,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:30:29,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:30:29,746 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 7 treesize of output 3 [2021-12-18 21:30:29,750 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 7 treesize of output 3 [2021-12-18 21:31:04,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:31:04,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:31:04,010 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:31:04,065 INFO L354 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2021-12-18 21:31:04,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 290 treesize of output 158 [2021-12-18 21:31:04,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:31:04,088 INFO L354 Elim1Store]: treesize reduction 23, result has 39.5 percent of original size [2021-12-18 21:31:04,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 188 treesize of output 64 [2021-12-18 21:31:06,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:31:06,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:31:06,314 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:31:06,316 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 21:31:06,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 48 [2021-12-18 21:31:06,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:31:06,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:31:06,327 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:31:06,329 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 21:31:06,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2021-12-18 21:31:08,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:31:08,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:31:08,587 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 21:31:08,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 42 [2021-12-18 21:31:08,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:31:08,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:31:08,598 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-18 21:31:08,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-12-18 21:31:12,930 INFO L354 Elim1Store]: treesize reduction 80, result has 8.0 percent of original size [2021-12-18 21:31:12,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 86 treesize of output 52 [2021-12-18 21:31:12,973 INFO L354 Elim1Store]: treesize reduction 50, result has 18.0 percent of original size [2021-12-18 21:31:12,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 28 [2021-12-18 21:31:13,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:31:13,125 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:31:13,126 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:31:13,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398838393] [2021-12-18 21:31:13,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1398838393] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:31:13,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:31:13,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-12-18 21:31:13,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845069858] [2021-12-18 21:31:13,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:31:13,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-18 21:31:13,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:31:13,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-18 21:31:13,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=360, Unknown=14, NotChecked=0, Total=420 [2021-12-18 21:31:13,127 INFO L87 Difference]: Start difference. First operand 570 states and 669 transitions. Second operand has 21 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 18 states have internal predecessors, (64), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:31:30,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:31:30,841 INFO L93 Difference]: Finished difference Result 605 states and 700 transitions. [2021-12-18 21:31:30,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-18 21:31:30,841 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 18 states have internal predecessors, (64), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2021-12-18 21:31:30,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:31:30,843 INFO L225 Difference]: With dead ends: 605 [2021-12-18 21:31:30,843 INFO L226 Difference]: Without dead ends: 605 [2021-12-18 21:31:30,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 55.7s TimeCoverageRelationStatistics Valid=83, Invalid=598, Unknown=21, NotChecked=0, Total=702 [2021-12-18 21:31:30,843 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 76 mSDsluCounter, 1853 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 2020 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 735 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-18 21:31:30,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 2020 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 787 Invalid, 0 Unknown, 735 Unchecked, 3.1s Time] [2021-12-18 21:31:30,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-12-18 21:31:30,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 571. [2021-12-18 21:31:30,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 484 states have (on average 1.2830578512396693) internal successors, (621), 539 states have internal predecessors, (621), 30 states have call successors, (30), 15 states have call predecessors, (30), 13 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-18 21:31:30,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 670 transitions. [2021-12-18 21:31:30,853 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 670 transitions. Word has length 68 [2021-12-18 21:31:30,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:31:30,853 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 670 transitions. [2021-12-18 21:31:30,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 18 states have internal predecessors, (64), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:31:30,854 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 670 transitions. [2021-12-18 21:31:30,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-18 21:31:30,854 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:31:30,854 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:31:30,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2021-12-18 21:31:31,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:31:31,061 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:31:31,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:31:31,061 INFO L85 PathProgramCache]: Analyzing trace with hash -327417151, now seen corresponding path program 2 times [2021-12-18 21:31:31,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:31:31,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1509793114] [2021-12-18 21:31:31,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 21:31:31,062 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:31:31,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:31:31,063 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:31:31,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-12-18 21:31:31,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 21:31:31,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 21:31:31,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 142 conjunts are in the unsatisfiable core [2021-12-18 21:31:31,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:31:32,019 INFO L354 Elim1Store]: treesize reduction 45, result has 45.1 percent of original size [2021-12-18 21:31:32,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 60 [2021-12-18 21:31:32,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:31:32,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:31:32,215 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 7 treesize of output 3 [2021-12-18 21:31:32,229 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 7 treesize of output 3 [2021-12-18 21:31:33,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:31:33,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 89 [2021-12-18 21:31:33,890 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-12-18 21:31:33,891 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 49 [2021-12-18 21:31:33,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:31:33,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2021-12-18 21:31:33,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:31:33,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2021-12-18 21:31:33,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:31:33,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2021-12-18 21:31:33,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:31:33,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2021-12-18 21:31:34,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:31:34,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-18 21:31:34,252 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:31:34,252 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 68 treesize of output 61 [2021-12-18 21:31:34,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-18 21:31:34,560 INFO L354 Elim1Store]: treesize reduction 45, result has 45.1 percent of original size [2021-12-18 21:31:34,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 62 [2021-12-18 21:31:34,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 44 [2021-12-18 21:31:34,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:31:34,977 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 9 treesize of output 3 [2021-12-18 21:31:34,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:31:34,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2021-12-18 21:31:36,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:31:36,390 INFO L354 Elim1Store]: treesize reduction 58, result has 24.7 percent of original size [2021-12-18 21:31:36,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 133 treesize of output 130 [2021-12-18 21:31:36,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:31:36,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 89 [2021-12-18 21:31:36,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:31:36,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:31:36,448 INFO L354 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2021-12-18 21:31:36,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 42 [2021-12-18 21:31:36,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:31:36,458 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 16 treesize of output 20 [2021-12-18 21:31:36,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 49 [2021-12-18 21:31:36,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:31:36,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-12-18 21:31:36,530 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-12-18 21:31:36,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 86 treesize of output 69 [2021-12-18 21:31:36,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:31:36,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 28 [2021-12-18 21:31:36,704 INFO L354 Elim1Store]: treesize reduction 15, result has 48.3 percent of original size [2021-12-18 21:31:36,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 101 treesize of output 101 [2021-12-18 21:31:36,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:31:36,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 40 [2021-12-18 21:31:37,093 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:31:37,093 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 83 treesize of output 72 [2021-12-18 21:31:37,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2021-12-18 21:31:37,462 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-12-18 21:31:37,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 34 [2021-12-18 21:31:37,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:31:37,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 59 [2021-12-18 21:31:37,759 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 9 treesize of output 3 [2021-12-18 21:31:37,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:31:37,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 29 [2021-12-18 21:31:39,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:31:39,196 INFO L354 Elim1Store]: treesize reduction 58, result has 24.7 percent of original size [2021-12-18 21:31:39,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 152 treesize of output 145 [2021-12-18 21:31:39,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:31:39,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 102 [2021-12-18 21:31:39,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:31:39,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:31:39,286 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 21:31:39,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 30 [2021-12-18 21:31:39,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:31:39,298 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 16 treesize of output 20 [2021-12-18 21:31:39,520 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 12 treesize of output 11 [2021-12-18 21:31:39,569 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:31:39,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 44 [2021-12-18 21:31:39,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-12-18 21:31:39,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:31:39,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 35 [2021-12-18 21:31:39,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:31:39,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 35 [2021-12-18 21:31:40,383 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:31:40,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-12-18 21:31:40,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:31:40,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-12-18 21:31:40,503 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 51 refuted. 5 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-18 21:31:40,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 21:31:41,015 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_4612 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= |c_~#gl_list~0.offset| (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4612) |c_~#gl_list~0.base|) (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))))) (forall ((v_ArrVal_4611 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= |c_~#gl_list~0.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4611) |c_~#gl_list~0.base|) (bvadd |c_~#gl_list~0.offset| (_ bv4 32))))))) is different from false [2021-12-18 21:31:41,782 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_4634 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4612 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4633 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4629 (_ BitVec 32))) (not (= |c_~#gl_list~0.offset| (select (select (store (let ((.cse0 (store (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) v_ArrVal_4633) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4634))) (store .cse0 |c_~#gl_list~0.base| (store (select .cse0 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_4629))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4612) |c_~#gl_list~0.base|) (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))))) (forall ((v_ArrVal_4630 (_ BitVec 32)) (v_ArrVal_4611 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4632 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4631 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= |c_~#gl_list~0.base| (select (select (store (let ((.cse1 (store (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) v_ArrVal_4631) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4632))) (store .cse1 |c_~#gl_list~0.base| (store (select .cse1 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_4630))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4611) |c_~#gl_list~0.base|) (bvadd |c_~#gl_list~0.offset| (_ bv4 32))))))) is different from false [2021-12-18 21:31:41,785 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:31:41,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1509793114] [2021-12-18 21:31:41,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1509793114] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 21:31:41,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2124975535] [2021-12-18 21:31:41,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 21:31:41,786 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-18 21:31:41,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-18 21:31:41,787 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-18 21:31:41,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (55)] Waiting until timeout for monitored process [2021-12-18 21:31:44,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 21:31:44,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 21:31:44,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 130 conjunts are in the unsatisfiable core [2021-12-18 21:31:44,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:31:44,758 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 21:31:44,758 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 13 treesize of output 13 [2021-12-18 21:31:45,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:31:45,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:31:45,194 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 7 treesize of output 3 [2021-12-18 21:31:45,203 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 7 treesize of output 3 [2021-12-18 21:31:46,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 21:31:47,034 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 69 treesize of output 49 [2021-12-18 21:31:47,056 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-12-18 21:31:47,056 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 40 [2021-12-18 21:31:47,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:31:47,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2021-12-18 21:31:47,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:31:47,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2021-12-18 21:31:47,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:31:47,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:31:47,421 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:31:47,421 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 29 treesize of output 30 [2021-12-18 21:31:47,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2021-12-18 21:31:47,610 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 21:31:47,610 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 13 treesize of output 13 [2021-12-18 21:31:47,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:31:47,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2021-12-18 21:31:47,837 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 8 treesize of output 4 [2021-12-18 21:31:47,842 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 9 treesize of output 3 [2021-12-18 21:31:49,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 21:31:49,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2021-12-18 21:31:49,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:31:49,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:31:49,412 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-18 21:31:49,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 38 [2021-12-18 21:31:49,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:31:49,419 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 16 treesize of output 20 [2021-12-18 21:31:49,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:31:49,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:31:49,733 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:31:49,733 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 29 treesize of output 30 [2021-12-18 21:31:49,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2021-12-18 21:31:49,824 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 21:31:49,824 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 13 treesize of output 13 [2021-12-18 21:31:50,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2021-12-18 21:31:50,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:31:50,068 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 8 treesize of output 4 [2021-12-18 21:31:50,074 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 9 treesize of output 3 [2021-12-18 21:31:52,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 28 [2021-12-18 21:31:52,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:31:52,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:31:52,081 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 21:31:52,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 30 [2021-12-18 21:31:52,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:31:52,090 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 16 treesize of output 20 [2021-12-18 21:31:52,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:31:52,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 21:31:53,253 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:31:53,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-12-18 21:31:53,267 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 9 treesize of output 3 [2021-12-18 21:31:53,492 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 4 proven. 38 refuted. 5 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-18 21:31:53,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 21:31:53,520 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 10 treesize of output 4 [2021-12-18 21:31:54,398 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4832 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4832) |c_~#gl_list~0.base|) (bvadd |c_~#gl_list~0.offset| (_ bv4 32))) |c_~#gl_list~0.offset|))) is different from false [2021-12-18 21:31:55,184 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4843 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4832 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4844 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4842 (_ BitVec 32))) (not (= (select (select (store (let ((.cse0 (store (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) v_ArrVal_4843) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4844))) (store .cse0 |c_~#gl_list~0.base| (store (select .cse0 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_4842))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_4832) |c_~#gl_list~0.base|) (bvadd |c_~#gl_list~0.offset| (_ bv4 32))) |c_~#gl_list~0.offset|))) is different from false [2021-12-18 21:31:55,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2124975535] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 21:31:55,188 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 21:31:55,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 31] total 63 [2021-12-18 21:31:55,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326220680] [2021-12-18 21:31:55,189 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 21:31:55,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-12-18 21:31:55,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:31:55,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-12-18 21:31:55,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=4402, Unknown=250, NotChecked=564, Total=5550 [2021-12-18 21:31:55,190 INFO L87 Difference]: Start difference. First operand 571 states and 670 transitions. Second operand has 64 states, 64 states have (on average 1.84375) internal successors, (118), 59 states have internal predecessors, (118), 9 states have call successors, (9), 5 states have call predecessors, (9), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-18 21:32:23,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:32:23,534 INFO L93 Difference]: Finished difference Result 890 states and 962 transitions. [2021-12-18 21:32:23,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-12-18 21:32:23,535 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.84375) internal successors, (118), 59 states have internal predecessors, (118), 9 states have call successors, (9), 5 states have call predecessors, (9), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) Word has length 71 [2021-12-18 21:32:23,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:32:23,537 INFO L225 Difference]: With dead ends: 890 [2021-12-18 21:32:23,537 INFO L226 Difference]: Without dead ends: 890 [2021-12-18 21:32:23,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 90 SyntacticMatches, 15 SemanticMatches, 115 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 3729 ImplicationChecksByTransitivity, 28.7s TimeCoverageRelationStatistics Valid=1065, Invalid=11189, Unknown=418, NotChecked=900, Total=13572 [2021-12-18 21:32:23,540 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 2467 mSDsluCounter, 2683 mSDsCounter, 0 mSdLazyCounter, 5875 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2479 SdHoareTripleChecker+Valid, 2909 SdHoareTripleChecker+Invalid, 8199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 5875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2039 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2021-12-18 21:32:23,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2479 Valid, 2909 Invalid, 8199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 5875 Invalid, 0 Unknown, 2039 Unchecked, 12.2s Time] [2021-12-18 21:32:23,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2021-12-18 21:32:23,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 571. [2021-12-18 21:32:23,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 484 states have (on average 1.28099173553719) internal successors, (620), 539 states have internal predecessors, (620), 30 states have call successors, (30), 15 states have call predecessors, (30), 13 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-18 21:32:23,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 669 transitions. [2021-12-18 21:32:23,548 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 669 transitions. Word has length 71 [2021-12-18 21:32:23,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:32:23,549 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 669 transitions. [2021-12-18 21:32:23,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.84375) internal successors, (118), 59 states have internal predecessors, (118), 9 states have call successors, (9), 5 states have call predecessors, (9), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-18 21:32:23,550 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 669 transitions. [2021-12-18 21:32:23,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-18 21:32:23,550 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:32:23,550 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, 1, 1] [2021-12-18 21:32:23,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (55)] Forceful destruction successful, exit code 0 [2021-12-18 21:32:23,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-12-18 21:32:23,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:32:23,960 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting inspectErr24REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:32:23,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:32:23,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1412082453, now seen corresponding path program 1 times [2021-12-18 21:32:23,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:32:23,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1714785126] [2021-12-18 21:32:23,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:32:23,961 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:32:23,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:32:23,962 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:32:23,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-12-18 21:32:24,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:32:24,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 70 conjunts are in the unsatisfiable core [2021-12-18 21:32:24,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:32:24,618 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 21:32:24,619 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 13 treesize of output 13 [2021-12-18 21:32:24,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:32:24,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:32:24,722 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 7 treesize of output 3 [2021-12-18 21:32:24,731 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 7 treesize of output 3 [2021-12-18 21:32:25,546 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 36 [2021-12-18 21:32:27,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:32:27,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 198 treesize of output 125 [2021-12-18 21:32:27,113 INFO L354 Elim1Store]: treesize reduction 23, result has 32.4 percent of original size [2021-12-18 21:32:27,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 90 treesize of output 63 [2021-12-18 21:32:27,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:32:27,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 45 [2021-12-18 21:32:27,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:32:27,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 32 [2021-12-18 21:32:27,178 INFO L354 Elim1Store]: treesize reduction 31, result has 29.5 percent of original size [2021-12-18 21:32:27,178 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 47 [2021-12-18 21:32:27,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:32:27,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 35 [2021-12-18 21:32:27,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:32:27,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:32:27,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:32:27,360 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:32:27,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 55 [2021-12-18 21:32:27,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:32:27,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-12-18 21:32:27,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:32:27,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:32:27,493 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:32:27,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 49 [2021-12-18 21:32:27,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-18 21:32:28,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-18 21:32:29,216 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:32:29,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 14 [2021-12-18 21:32:29,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:32:29,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:32:29,307 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:32:29,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1714785126] [2021-12-18 21:32:29,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1714785126] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:32:29,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:32:29,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-18 21:32:29,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143416537] [2021-12-18 21:32:29,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:32:29,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-18 21:32:29,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:32:29,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-18 21:32:29,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=328, Unknown=10, NotChecked=0, Total=380 [2021-12-18 21:32:29,308 INFO L87 Difference]: Start difference. First operand 571 states and 669 transitions. Second operand has 20 states, 19 states have (on average 3.473684210526316) internal successors, (66), 17 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:32:34,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:32:34,981 INFO L93 Difference]: Finished difference Result 611 states and 699 transitions. [2021-12-18 21:32:34,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-18 21:32:34,982 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.473684210526316) internal successors, (66), 17 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-12-18 21:32:34,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:32:34,984 INFO L225 Difference]: With dead ends: 611 [2021-12-18 21:32:34,984 INFO L226 Difference]: Without dead ends: 611 [2021-12-18 21:32:34,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=142, Invalid=900, Unknown=14, NotChecked=0, Total=1056 [2021-12-18 21:32:34,984 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 309 mSDsluCounter, 1334 mSDsCounter, 0 mSdLazyCounter, 1774 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 2478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 670 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-12-18 21:32:34,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 1479 Invalid, 2478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1774 Invalid, 0 Unknown, 670 Unchecked, 4.0s Time] [2021-12-18 21:32:34,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-12-18 21:32:34,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 571. [2021-12-18 21:32:34,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 484 states have (on average 1.2789256198347108) internal successors, (619), 539 states have internal predecessors, (619), 30 states have call successors, (30), 15 states have call predecessors, (30), 13 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-18 21:32:34,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 668 transitions. [2021-12-18 21:32:34,989 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 668 transitions. Word has length 69 [2021-12-18 21:32:34,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:32:34,990 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 668 transitions. [2021-12-18 21:32:34,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.473684210526316) internal successors, (66), 17 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:32:34,990 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 668 transitions. [2021-12-18 21:32:34,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-18 21:32:34,990 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:32:34,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:32:35,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2021-12-18 21:32:35,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:32:35,200 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting inspectErr25REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:32:35,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:32:35,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1412082452, now seen corresponding path program 1 times [2021-12-18 21:32:35,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:32:35,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426704074] [2021-12-18 21:32:35,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:32:35,201 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:32:35,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:32:35,202 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:32:35,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-12-18 21:32:35,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:32:35,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 76 conjunts are in the unsatisfiable core [2021-12-18 21:32:35,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:32:35,888 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 21:32:35,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2021-12-18 21:32:35,920 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 21:32:35,920 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 13 treesize of output 13 [2021-12-18 21:32:36,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:32:36,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:32:36,131 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 7 treesize of output 3 [2021-12-18 21:32:36,150 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 7 treesize of output 3 [2021-12-18 21:32:37,178 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 36 [2021-12-18 21:32:37,218 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 36 [2021-12-18 21:32:41,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:32:41,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 206 treesize of output 133 [2021-12-18 21:32:41,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:32:41,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:32:41,599 INFO L354 Elim1Store]: treesize reduction 64, result has 4.5 percent of original size [2021-12-18 21:32:41,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 164 treesize of output 127 [2021-12-18 21:32:41,647 INFO L354 Elim1Store]: treesize reduction 25, result has 34.2 percent of original size [2021-12-18 21:32:41,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 110 treesize of output 73 [2021-12-18 21:32:41,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:32:41,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:32:41,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 49 [2021-12-18 21:32:41,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:32:41,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 43 [2021-12-18 21:32:41,705 INFO L354 Elim1Store]: treesize reduction 49, result has 21.0 percent of original size [2021-12-18 21:32:41,705 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 61 [2021-12-18 21:32:41,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:32:41,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:32:41,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:32:41,958 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:32:41,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 48 [2021-12-18 21:32:41,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:32:41,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2021-12-18 21:32:42,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:32:42,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:32:42,156 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:32:42,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 42 [2021-12-18 21:32:42,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2021-12-18 21:32:44,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:32:44,600 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:32:44,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 37 [2021-12-18 21:32:44,623 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-18 21:32:44,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2021-12-18 21:32:44,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:32:44,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:32:44,753 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:32:44,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426704074] [2021-12-18 21:32:44,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426704074] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:32:44,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:32:44,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-18 21:32:44,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079480502] [2021-12-18 21:32:44,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:32:44,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-18 21:32:44,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:32:44,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-18 21:32:44,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=322, Unknown=16, NotChecked=0, Total=380 [2021-12-18 21:32:44,754 INFO L87 Difference]: Start difference. First operand 571 states and 668 transitions. Second operand has 20 states, 19 states have (on average 3.473684210526316) internal successors, (66), 17 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:32:53,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:32:53,880 INFO L93 Difference]: Finished difference Result 612 states and 700 transitions. [2021-12-18 21:32:53,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-18 21:32:53,881 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.473684210526316) internal successors, (66), 17 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-12-18 21:32:53,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:32:53,883 INFO L225 Difference]: With dead ends: 612 [2021-12-18 21:32:53,883 INFO L226 Difference]: Without dead ends: 612 [2021-12-18 21:32:53,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=142, Invalid=883, Unknown=31, NotChecked=0, Total=1056 [2021-12-18 21:32:53,883 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 304 mSDsluCounter, 1333 mSDsCounter, 0 mSdLazyCounter, 1902 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 2684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 749 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-12-18 21:32:53,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 1482 Invalid, 2684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1902 Invalid, 0 Unknown, 749 Unchecked, 6.5s Time] [2021-12-18 21:32:53,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-12-18 21:32:53,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 571. [2021-12-18 21:32:53,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 484 states have (on average 1.2768595041322315) internal successors, (618), 539 states have internal predecessors, (618), 30 states have call successors, (30), 15 states have call predecessors, (30), 13 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-18 21:32:53,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 667 transitions. [2021-12-18 21:32:53,890 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 667 transitions. Word has length 69 [2021-12-18 21:32:53,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:32:53,891 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 667 transitions. [2021-12-18 21:32:53,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.473684210526316) internal successors, (66), 17 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:32:53,891 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 667 transitions. [2021-12-18 21:32:53,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-18 21:32:53,891 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:32:53,891 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:32:53,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2021-12-18 21:32:54,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:32:54,102 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:32:54,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:32:54,103 INFO L85 PathProgramCache]: Analyzing trace with hash -749231525, now seen corresponding path program 1 times [2021-12-18 21:32:54,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:32:54,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1087656367] [2021-12-18 21:32:54,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:32:54,104 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:32:54,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:32:54,105 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:32:54,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-12-18 21:32:54,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:32:54,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 122 conjunts are in the unsatisfiable core [2021-12-18 21:32:54,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:32:55,111 INFO L354 Elim1Store]: treesize reduction 45, result has 45.1 percent of original size [2021-12-18 21:32:55,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 60 [2021-12-18 21:32:55,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 [2021-12-18 21:32:55,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:32:55,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:32:55,405 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 7 treesize of output 3 [2021-12-18 21:32:55,417 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 7 treesize of output 3 [2021-12-18 21:32:57,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:32:57,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 95 [2021-12-18 21:32:57,905 INFO L354 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2021-12-18 21:32:57,905 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 53 [2021-12-18 21:32:57,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:32:57,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 30 [2021-12-18 21:32:57,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:32:57,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2021-12-18 21:32:57,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:32:57,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 27 [2021-12-18 21:32:57,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:32:57,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2021-12-18 21:32:58,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-18 21:32:58,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2021-12-18 21:32:58,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:32:58,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:32:58,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:32:58,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 84 [2021-12-18 21:32:58,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:32:58,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 58 [2021-12-18 21:32:59,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-12-18 21:32:59,364 INFO L354 Elim1Store]: treesize reduction 16, result has 56.8 percent of original size [2021-12-18 21:32:59,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 47 [2021-12-18 21:32:59,739 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-18 21:32:59,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 96 treesize of output 88 [2021-12-18 21:32:59,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 66 [2021-12-18 21:32:59,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:32:59,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:32:59,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:32:59,888 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:32:59,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 82 treesize of output 41 [2021-12-18 21:32:59,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:32:59,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 17 [2021-12-18 21:33:14,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:33:14,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:33:14,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:33:14,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:33:14,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:33:14,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:33:14,452 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:33:14,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 212 treesize of output 149 [2021-12-18 21:33:14,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:33:14,529 INFO L354 Elim1Store]: treesize reduction 42, result has 10.6 percent of original size [2021-12-18 21:33:14,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 165 treesize of output 144 [2021-12-18 21:33:14,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:33:14,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 113 [2021-12-18 21:33:14,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:33:14,571 INFO L354 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2021-12-18 21:33:14,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 140 treesize of output 102 [2021-12-18 21:33:14,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:33:14,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 42 [2021-12-18 21:33:14,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:33:14,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2021-12-18 21:33:14,881 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-18 21:33:14,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 79 treesize of output 75 [2021-12-18 21:33:14,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 34 [2021-12-18 21:33:14,980 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-18 21:33:14,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 79 treesize of output 75 [2021-12-18 21:33:14,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 34 [2021-12-18 21:33:16,713 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-12-18 21:33:16,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 18 [2021-12-18 21:33:16,717 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:33:16,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:33:16,724 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-18 21:33:16,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 28 [2021-12-18 21:33:16,883 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:33:16,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 21:33:18,482 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_5142 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5143 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_5142)) (.cse1 (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))) (let ((.cse2 (select (select .cse0 |c_~#gl_list~0.base|) .cse1))) (= (select (select .cse0 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_5143) |c_~#gl_list~0.base|) .cse1)) (bvadd .cse2 (_ bv12 32))) (bvadd .cse2 (_ bv8 32)))))) (forall ((v_ArrVal_5142 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5143 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_5143)) (.cse5 (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))) (let ((.cse4 (select (select .cse3 |c_~#gl_list~0.base|) .cse5))) (= (select (select .cse3 .cse4) (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_5142) |c_~#gl_list~0.base|) .cse5) (_ bv12 32))) .cse4))))) is different from false [2021-12-18 21:33:21,286 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_5162 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5167 (_ BitVec 32)) (v_ArrVal_5166 (_ BitVec 32)) (v_ArrVal_5165 (_ BitVec 32)) (v_ArrVal_5163 (_ BitVec 32)) (v_ArrVal_5164 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5142 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5143 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (.cse4 (bvadd (select (select |c_#memory_$Pointer$.offset| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) (_ bv4 32)))) (let ((.cse0 (store (let ((.cse6 (store (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) .cse4 v_ArrVal_5163)) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_5164))) (store .cse6 |c_~#gl_list~0.base| (store (select .cse6 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_5166))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_5143)) (.cse5 (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))) (let ((.cse1 (select (select .cse0 |c_~#gl_list~0.base|) .cse5))) (= (select (select .cse0 .cse1) (bvadd (select (select (store (let ((.cse2 (store (store |c_#memory_$Pointer$.offset| .cse3 (store (select |c_#memory_$Pointer$.offset| .cse3) .cse4 v_ArrVal_5165)) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_5162))) (store .cse2 |c_~#gl_list~0.base| (store (select .cse2 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_5167))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_5142) |c_~#gl_list~0.base|) .cse5) (_ bv12 32))) .cse1))))) (forall ((v_ArrVal_5162 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5167 (_ BitVec 32)) (v_ArrVal_5166 (_ BitVec 32)) (v_ArrVal_5165 (_ BitVec 32)) (v_ArrVal_5163 (_ BitVec 32)) (v_ArrVal_5164 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5142 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5143 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse9 (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (.cse10 (bvadd (select (select |c_#memory_$Pointer$.offset| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) (_ bv4 32)))) (let ((.cse7 (store (let ((.cse13 (store (store |c_#memory_$Pointer$.offset| .cse9 (store (select |c_#memory_$Pointer$.offset| .cse9) .cse10 v_ArrVal_5165)) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_5162))) (store .cse13 |c_~#gl_list~0.base| (store (select .cse13 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_5167))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_5142)) (.cse11 (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))) (let ((.cse12 (select (select .cse7 |c_~#gl_list~0.base|) .cse11))) (= (select (select .cse7 (select (select (store (let ((.cse8 (store (store |c_#memory_$Pointer$.base| .cse9 (store (select |c_#memory_$Pointer$.base| .cse9) .cse10 v_ArrVal_5163)) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_5164))) (store .cse8 |c_~#gl_list~0.base| (store (select .cse8 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_5166))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_5143) |c_~#gl_list~0.base|) .cse11)) (bvadd .cse12 (_ bv12 32))) (bvadd .cse12 (_ bv8 32)))))))) is different from false [2021-12-18 21:33:21,311 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:33:21,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1087656367] [2021-12-18 21:33:21,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1087656367] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 21:33:21,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1595707732] [2021-12-18 21:33:21,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:33:21,312 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-18 21:33:21,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-18 21:33:21,313 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-18 21:33:21,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (59)] Waiting until timeout for monitored process [2021-12-18 21:33:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:33:23,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 122 conjunts are in the unsatisfiable core [2021-12-18 21:33:23,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:33:23,795 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-18 21:33:23,796 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 19 treesize of output 26 [2021-12-18 21:33:24,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:33:24,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:33:24,252 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 7 treesize of output 3 [2021-12-18 21:33:24,267 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 7 treesize of output 3 [2021-12-18 21:33:34,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:33:34,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 95 [2021-12-18 21:33:34,115 INFO L354 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2021-12-18 21:33:34,116 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 53 [2021-12-18 21:33:34,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:33:34,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 43 [2021-12-18 21:33:34,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:33:34,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 28 [2021-12-18 21:33:34,144 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-12-18 21:33:34,145 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 37 [2021-12-18 21:33:34,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:33:34,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2021-12-18 21:33:34,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-18 21:33:34,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2021-12-18 21:33:34,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:33:34,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:33:34,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 53 [2021-12-18 21:33:34,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:33:34,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2021-12-18 21:33:34,839 INFO L354 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2021-12-18 21:33:34,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 30 [2021-12-18 21:33:35,111 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-18 21:33:35,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 68 [2021-12-18 21:33:35,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 39 [2021-12-18 21:33:35,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:33:35,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:33:35,321 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:33:35,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 21 [2021-12-18 21:33:35,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:33:35,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2021-12-18 21:33:42,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:33:42,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:33:42,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:33:42,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:33:42,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:33:42,154 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:33:42,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 188 treesize of output 126 [2021-12-18 21:33:42,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:33:42,199 INFO L354 Elim1Store]: treesize reduction 42, result has 10.6 percent of original size [2021-12-18 21:33:42,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 148 treesize of output 125 [2021-12-18 21:33:42,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:33:42,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 100 [2021-12-18 21:33:42,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:33:42,227 INFO L354 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2021-12-18 21:33:42,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 89 [2021-12-18 21:33:42,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:33:42,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 42 [2021-12-18 21:33:42,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:33:42,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2021-12-18 21:33:42,543 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-18 21:33:42,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 64 [2021-12-18 21:33:42,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 34 [2021-12-18 21:33:42,785 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-12-18 21:33:42,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 80 [2021-12-18 21:33:42,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2021-12-18 21:33:45,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:33:45,242 INFO L354 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2021-12-18 21:33:45,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 23 [2021-12-18 21:33:45,246 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:33:45,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:33:45,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:33:45,255 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-18 21:33:45,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 28 [2021-12-18 21:33:45,434 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:33:45,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 21:33:47,725 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5315 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5314 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_5315)) (.cse6 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_5314)) (.cse7 (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))) (let ((.cse5 (select (select .cse6 |c_~#gl_list~0.base|) .cse7)) (.cse1 (select (select .cse0 |c_~#gl_list~0.base|) .cse7))) (let ((.cse3 (select .cse6 .cse1)) (.cse4 (bvadd .cse5 (_ bv8 32)))) (or (let ((.cse2 (bvadd .cse5 (_ bv12 32)))) (and (= (select (select .cse0 .cse1) .cse2) .cse1) (= (select .cse3 .cse2) .cse4))) (not (= .cse4 (select .cse3 .cse4)))))))) is different from false [2021-12-18 21:33:50,274 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5336 (_ BitVec 32)) (v_ArrVal_5335 (_ BitVec 32)) (v_ArrVal_5315 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5338 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5339 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5314 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5337 (_ BitVec 32))) (let ((.cse9 (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (.cse10 (bvadd (select (select |c_#memory_$Pointer$.offset| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) (_ bv4 32)))) (let ((.cse0 (store (let ((.cse11 (store (store |c_#memory_$Pointer$.base| .cse9 (store (select |c_#memory_$Pointer$.base| .cse9) .cse10 |c_ULTIMATE.start_gl_insert_~node~1#1.base|)) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_5339))) (store .cse11 |c_~#gl_list~0.base| (store (select .cse11 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_5336))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_5315)) (.cse6 (store (let ((.cse8 (store (store |c_#memory_$Pointer$.offset| .cse9 (store (select |c_#memory_$Pointer$.offset| .cse9) .cse10 v_ArrVal_5335)) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_5338))) (store .cse8 |c_~#gl_list~0.base| (store (select .cse8 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_5337))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_5314)) (.cse7 (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))) (let ((.cse5 (select (select .cse6 |c_~#gl_list~0.base|) .cse7)) (.cse1 (select (select .cse0 |c_~#gl_list~0.base|) .cse7))) (let ((.cse3 (select .cse6 .cse1)) (.cse4 (bvadd .cse5 (_ bv8 32)))) (or (let ((.cse2 (bvadd .cse5 (_ bv12 32)))) (and (= (select (select .cse0 .cse1) .cse2) .cse1) (= (select .cse3 .cse2) .cse4))) (not (= .cse4 (select .cse3 .cse4))))))))) is different from false [2021-12-18 21:33:50,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1595707732] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 21:33:50,294 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 21:33:50,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 31] total 55 [2021-12-18 21:33:50,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504446346] [2021-12-18 21:33:50,294 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 21:33:50,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-12-18 21:33:50,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:33:50,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-12-18 21:33:50,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=4440, Unknown=138, NotChecked=556, Total=5402 [2021-12-18 21:33:50,295 INFO L87 Difference]: Start difference. First operand 571 states and 667 transitions. Second operand has 56 states, 56 states have (on average 2.25) internal successors, (126), 50 states have internal predecessors, (126), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-18 21:34:08,014 WARN L227 SmtUtils]: Spent 6.77s on a formula simplification. DAG size of input: 119 DAG size of output: 111 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-18 21:34:21,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:34:21,407 INFO L93 Difference]: Finished difference Result 668 states and 743 transitions. [2021-12-18 21:34:21,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-12-18 21:34:21,408 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.25) internal successors, (126), 50 states have internal predecessors, (126), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 71 [2021-12-18 21:34:21,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:34:21,410 INFO L225 Difference]: With dead ends: 668 [2021-12-18 21:34:21,410 INFO L226 Difference]: Without dead ends: 668 [2021-12-18 21:34:21,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 137 SyntacticMatches, 6 SemanticMatches, 99 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 2870 ImplicationChecksByTransitivity, 64.0s TimeCoverageRelationStatistics Valid=671, Invalid=8455, Unknown=202, NotChecked=772, Total=10100 [2021-12-18 21:34:21,418 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 1154 mSDsluCounter, 4308 mSDsCounter, 0 mSdLazyCounter, 3287 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1154 SdHoareTripleChecker+Valid, 4500 SdHoareTripleChecker+Invalid, 6675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 3287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3263 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-12-18 21:34:21,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1154 Valid, 4500 Invalid, 6675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 3287 Invalid, 0 Unknown, 3263 Unchecked, 6.7s Time] [2021-12-18 21:34:21,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2021-12-18 21:34:21,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 571. [2021-12-18 21:34:21,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 484 states have (on average 1.2727272727272727) internal successors, (616), 539 states have internal predecessors, (616), 30 states have call successors, (30), 15 states have call predecessors, (30), 13 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-18 21:34:21,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 665 transitions. [2021-12-18 21:34:21,423 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 665 transitions. Word has length 71 [2021-12-18 21:34:21,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:34:21,423 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 665 transitions. [2021-12-18 21:34:21,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.25) internal successors, (126), 50 states have internal predecessors, (126), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-18 21:34:21,424 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 665 transitions. [2021-12-18 21:34:21,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-18 21:34:21,424 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:34:21,424 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, 1, 1, 1, 1, 1] [2021-12-18 21:34:21,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Ended with exit code 0 [2021-12-18 21:34:21,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (59)] Forceful destruction successful, exit code 0 [2021-12-18 21:34:21,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2021-12-18 21:34:21,835 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:34:21,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:34:21,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1856580454, now seen corresponding path program 1 times [2021-12-18 21:34:21,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:34:21,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1662714160] [2021-12-18 21:34:21,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:34:21,836 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:34:21,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:34:21,837 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:34:21,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-12-18 21:34:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:34:22,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 78 conjunts are in the unsatisfiable core [2021-12-18 21:34:22,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:34:22,419 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 21:34:22,419 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 13 treesize of output 13 [2021-12-18 21:34:22,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:34:22,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:34:22,512 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 7 treesize of output 3 [2021-12-18 21:34:22,520 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 7 treesize of output 3 [2021-12-18 21:34:23,121 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 36 [2021-12-18 21:34:23,139 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 36 [2021-12-18 21:34:27,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:34:27,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 151 [2021-12-18 21:34:27,346 INFO L354 Elim1Store]: treesize reduction 35, result has 30.0 percent of original size [2021-12-18 21:34:27,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 108 treesize of output 73 [2021-12-18 21:34:27,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:34:27,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 63 [2021-12-18 21:34:27,398 INFO L354 Elim1Store]: treesize reduction 49, result has 18.3 percent of original size [2021-12-18 21:34:27,398 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 53 [2021-12-18 21:34:27,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:34:27,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 42 [2021-12-18 21:34:27,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:34:27,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 41 [2021-12-18 21:34:27,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:34:27,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:34:27,718 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-12-18 21:34:27,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 76 [2021-12-18 21:34:27,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:34:27,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:34:27,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:34:27,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:34:27,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:34:27,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:34:27,739 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:34:27,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 95 treesize of output 79 [2021-12-18 21:34:27,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:34:27,804 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-12-18 21:34:27,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 62 [2021-12-18 21:34:27,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:34:27,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:34:27,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:34:27,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:34:27,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:34:27,823 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:34:27,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 67 [2021-12-18 21:34:31,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:34:31,721 INFO L354 Elim1Store]: treesize reduction 110, result has 6.0 percent of original size [2021-12-18 21:34:31,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 110 treesize of output 67 [2021-12-18 21:34:31,778 INFO L354 Elim1Store]: treesize reduction 28, result has 20.0 percent of original size [2021-12-18 21:34:31,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 46 treesize of output 28 [2021-12-18 21:34:31,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:34:31,943 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:34:31,943 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:34:31,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1662714160] [2021-12-18 21:34:31,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1662714160] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:34:31,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:34:31,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-12-18 21:34:31,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797978617] [2021-12-18 21:34:31,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:34:31,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-18 21:34:31,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:34:31,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-18 21:34:31,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=357, Unknown=16, NotChecked=0, Total=420 [2021-12-18 21:34:31,951 INFO L87 Difference]: Start difference. First operand 571 states and 665 transitions. Second operand has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 18 states have internal predecessors, (68), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:34:43,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:34:43,599 INFO L93 Difference]: Finished difference Result 602 states and 687 transitions. [2021-12-18 21:34:43,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-18 21:34:43,600 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 18 states have internal predecessors, (68), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2021-12-18 21:34:43,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:34:43,602 INFO L225 Difference]: With dead ends: 602 [2021-12-18 21:34:43,602 INFO L226 Difference]: Without dead ends: 602 [2021-12-18 21:34:43,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=151, Invalid=940, Unknown=31, NotChecked=0, Total=1122 [2021-12-18 21:34:43,602 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 324 mSDsluCounter, 1340 mSDsCounter, 0 mSdLazyCounter, 1542 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 1973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 403 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-12-18 21:34:43,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 1496 Invalid, 1973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1542 Invalid, 0 Unknown, 403 Unchecked, 5.9s Time] [2021-12-18 21:34:43,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-12-18 21:34:43,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 571. [2021-12-18 21:34:43,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 484 states have (on average 1.2706611570247934) internal successors, (615), 539 states have internal predecessors, (615), 30 states have call successors, (30), 15 states have call predecessors, (30), 13 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-18 21:34:43,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 664 transitions. [2021-12-18 21:34:43,616 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 664 transitions. Word has length 72 [2021-12-18 21:34:43,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:34:43,617 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 664 transitions. [2021-12-18 21:34:43,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 18 states have internal predecessors, (68), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:34:43,617 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 664 transitions. [2021-12-18 21:34:43,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-18 21:34:43,617 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:34:43,617 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:34:43,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2021-12-18 21:34:43,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:34:43,827 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:34:43,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:34:43,827 INFO L85 PathProgramCache]: Analyzing trace with hash 164726861, now seen corresponding path program 2 times [2021-12-18 21:34:43,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:34:43,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990623070] [2021-12-18 21:34:43,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 21:34:43,828 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:34:43,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:34:43,829 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:34:43,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-12-18 21:34:44,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 21:34:44,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 21:34:44,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 110 conjunts are in the unsatisfiable core [2021-12-18 21:34:44,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:34:44,837 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-12-18 21:34:44,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 51 [2021-12-18 21:34:45,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:34:45,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:34:45,143 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 7 treesize of output 3 [2021-12-18 21:34:45,157 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 7 treesize of output 3 [2021-12-18 21:34:46,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:34:46,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 44 [2021-12-18 21:34:46,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:34:46,796 INFO L354 Elim1Store]: treesize reduction 44, result has 6.4 percent of original size [2021-12-18 21:34:46,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 38 [2021-12-18 21:34:46,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:34:46,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 27 [2021-12-18 21:34:46,815 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 13 [2021-12-18 21:34:47,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-18 21:34:47,065 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:34:47,065 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 48 treesize of output 43 [2021-12-18 21:34:47,498 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-12-18 21:34:47,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 53 [2021-12-18 21:34:47,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 38 [2021-12-18 21:34:47,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:34:47,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2021-12-18 21:34:50,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:34:50,527 INFO L354 Elim1Store]: treesize reduction 58, result has 24.7 percent of original size [2021-12-18 21:34:50,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 107 treesize of output 106 [2021-12-18 21:34:50,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:34:50,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 73 [2021-12-18 21:34:50,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-18 21:34:50,726 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:34:50,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 62 [2021-12-18 21:34:50,746 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-18 21:34:51,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 43 [2021-12-18 21:34:51,529 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:34:51,530 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 72 treesize of output 65 [2021-12-18 21:34:52,120 INFO L354 Elim1Store]: treesize reduction 50, result has 47.4 percent of original size [2021-12-18 21:34:52,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 54 treesize of output 76 [2021-12-18 21:34:52,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 67 [2021-12-18 21:34:52,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:34:52,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 25 [2021-12-18 21:34:54,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:34:54,730 INFO L354 Elim1Store]: treesize reduction 66, result has 14.3 percent of original size [2021-12-18 21:34:54,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 131 treesize of output 118 [2021-12-18 21:34:54,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:34:54,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 82 [2021-12-18 21:34:54,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-12-18 21:34:55,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 43 [2021-12-18 21:34:55,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 43 [2021-12-18 21:34:56,274 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 32 treesize of output 16 [2021-12-18 21:34:56,713 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 52 refuted. 5 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:34:56,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 21:34:57,788 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5603 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (_ bv0 32) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_5603) |c_~#gl_list~0.base|) (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))))) is different from false [2021-12-18 21:34:58,370 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5613 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5614 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5603 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5612 (_ BitVec 32))) (not (= (_ bv0 32) (select (select (store (let ((.cse0 (store (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) v_ArrVal_5613) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_5614))) (store .cse0 |c_~#gl_list~0.base| (store (select .cse0 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_5612))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_5603) |c_~#gl_list~0.base|) (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))))) is different from false [2021-12-18 21:34:58,374 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:34:58,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [990623070] [2021-12-18 21:34:58,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [990623070] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 21:34:58,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1391196333] [2021-12-18 21:34:58,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 21:34:58,375 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-18 21:34:58,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-18 21:34:58,376 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-18 21:34:58,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (62)] Waiting until timeout for monitored process [2021-12-18 21:35:00,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 21:35:00,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 21:35:00,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 115 conjunts are in the unsatisfiable core [2021-12-18 21:35:00,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:35:00,643 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 21:35:00,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2021-12-18 21:35:00,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:35:00,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:35:01,219 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 7 treesize of output 3 [2021-12-18 21:35:01,248 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 7 treesize of output 3 [2021-12-18 21:35:05,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:35:05,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 44 [2021-12-18 21:35:05,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:35:05,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 30 [2021-12-18 21:35:05,169 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 11 [2021-12-18 21:35:05,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:35:05,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2021-12-18 21:35:05,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-18 21:35:05,915 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:35:05,915 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 46 treesize of output 43 [2021-12-18 21:35:06,414 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 21:35:06,415 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 13 treesize of output 13 [2021-12-18 21:35:06,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2021-12-18 21:35:06,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:35:06,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 12 [2021-12-18 21:35:09,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:35:09,933 INFO L354 Elim1Store]: treesize reduction 58, result has 24.7 percent of original size [2021-12-18 21:35:09,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 95 [2021-12-18 21:35:09,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:35:09,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 62 [2021-12-18 21:35:09,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2021-12-18 21:35:10,089 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-12-18 21:35:10,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 23 [2021-12-18 21:35:10,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2021-12-18 21:35:10,997 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:35:10,997 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 39 treesize of output 38 [2021-12-18 21:35:11,565 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 21:35:11,565 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 13 treesize of output 13 [2021-12-18 21:35:12,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2021-12-18 21:35:12,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:35:12,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-12-18 21:35:16,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:35:16,726 INFO L354 Elim1Store]: treesize reduction 164, result has 18.4 percent of original size [2021-12-18 21:35:16,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 223 treesize of output 218 [2021-12-18 21:35:16,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:35:16,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 213 treesize of output 174 [2021-12-18 21:35:16,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:35:16,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2021-12-18 21:35:16,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 39 [2021-12-18 21:35:16,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 39 [2021-12-18 21:35:16,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2021-12-18 21:35:17,087 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:35:17,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 43 [2021-12-18 21:35:17,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 50 [2021-12-18 21:35:17,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:35:17,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2021-12-18 21:35:17,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 47 [2021-12-18 21:35:17,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:35:17,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 26 [2021-12-18 21:35:18,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2021-12-18 21:35:18,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2021-12-18 21:35:18,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-18 21:35:19,526 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 [2021-12-18 21:35:20,040 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 1 proven. 50 refuted. 5 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-18 21:35:20,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 21:35:20,517 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5805 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (_ bv0 32) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_5805) |c_~#gl_list~0.base|) (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))))) is different from false [2021-12-18 21:35:21,710 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5805 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5818 (_ BitVec 32)) (v_ArrVal_5817 (_ BitVec 32)) (v_ArrVal_5819 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (_ bv0 32) (select (select (store (let ((.cse0 (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (let ((.cse1 (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_5819))) (store .cse1 |c_ULTIMATE.start_gl_insert_~node~1#1.base| (store (store (select .cse1 |c_ULTIMATE.start_gl_insert_~node~1#1.base|) (bvadd |c_ULTIMATE.start_gl_insert_~node~1#1.offset| (_ bv4 32)) .cse2) (bvadd |c_ULTIMATE.start_gl_insert_~node~1#1.offset| (_ bv8 32)) v_ArrVal_5818)))))) (store .cse0 |c_~#gl_list~0.base| (store (select .cse0 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_5817))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_5805) |c_~#gl_list~0.base|) (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))))) is different from false [2021-12-18 21:35:21,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1391196333] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 21:35:21,716 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 21:35:21,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 71 [2021-12-18 21:35:21,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067508885] [2021-12-18 21:35:21,717 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 21:35:21,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2021-12-18 21:35:21,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:35:21,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-12-18 21:35:21,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=5279, Unknown=261, NotChecked=612, Total=6480 [2021-12-18 21:35:21,718 INFO L87 Difference]: Start difference. First operand 571 states and 664 transitions. Second operand has 72 states, 72 states have (on average 1.8333333333333333) internal successors, (132), 64 states have internal predecessors, (132), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-18 21:35:58,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:35:58,621 INFO L93 Difference]: Finished difference Result 819 states and 907 transitions. [2021-12-18 21:35:58,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-12-18 21:35:58,622 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.8333333333333333) internal successors, (132), 64 states have internal predecessors, (132), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 75 [2021-12-18 21:35:58,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:35:58,624 INFO L225 Difference]: With dead ends: 819 [2021-12-18 21:35:58,624 INFO L226 Difference]: Without dead ends: 819 [2021-12-18 21:35:58,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 102 SyntacticMatches, 19 SemanticMatches, 117 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 4341 ImplicationChecksByTransitivity, 42.4s TimeCoverageRelationStatistics Valid=980, Invalid=11687, Unknown=459, NotChecked=916, Total=14042 [2021-12-18 21:35:58,625 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 2334 mSDsluCounter, 3262 mSDsCounter, 0 mSdLazyCounter, 4640 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2334 SdHoareTripleChecker+Valid, 3426 SdHoareTripleChecker+Invalid, 9756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 4640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4875 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2021-12-18 21:35:58,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2334 Valid, 3426 Invalid, 9756 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [241 Valid, 4640 Invalid, 0 Unknown, 4875 Unchecked, 16.9s Time] [2021-12-18 21:35:58,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2021-12-18 21:35:58,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 672. [2021-12-18 21:35:58,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 577 states have (on average 1.2842287694974004) internal successors, (741), 633 states have internal predecessors, (741), 35 states have call successors, (35), 18 states have call predecessors, (35), 16 states have return successors, (24), 20 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-18 21:35:58,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 800 transitions. [2021-12-18 21:35:58,632 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 800 transitions. Word has length 75 [2021-12-18 21:35:58,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:35:58,632 INFO L470 AbstractCegarLoop]: Abstraction has 672 states and 800 transitions. [2021-12-18 21:35:58,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 1.8333333333333333) internal successors, (132), 64 states have internal predecessors, (132), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-18 21:35:58,632 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 800 transitions. [2021-12-18 21:35:58,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-18 21:35:58,632 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:35:58,633 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:35:58,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2021-12-18 21:35:58,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (62)] Forceful destruction successful, exit code 0 [2021-12-18 21:35:59,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2021-12-18 21:35:59,043 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting inspectErr6REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, failErr0ASSERT_VIOLATIONMEMORY_LEAK, inspectErr0REQUIRES_VIOLATION (and 67 more)] === [2021-12-18 21:35:59,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:35:59,044 INFO L85 PathProgramCache]: Analyzing trace with hash 164716218, now seen corresponding path program 2 times [2021-12-18 21:35:59,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:35:59,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1394958231] [2021-12-18 21:35:59,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 21:35:59,046 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:35:59,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:35:59,048 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:35:59,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-12-18 21:36:00,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 21:36:00,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 21:36:00,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 110 conjunts are in the unsatisfiable core [2021-12-18 21:36:00,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:36:00,364 INFO L354 Elim1Store]: treesize reduction 45, result has 45.1 percent of original size [2021-12-18 21:36:00,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 60 [2021-12-18 21:36:00,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:36:00,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:36:00,695 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 7 treesize of output 3 [2021-12-18 21:36:00,709 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 7 treesize of output 3 [2021-12-18 21:36:02,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:36:02,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 44 [2021-12-18 21:36:02,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:36:02,830 INFO L354 Elim1Store]: treesize reduction 44, result has 6.4 percent of original size [2021-12-18 21:36:02,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 38 [2021-12-18 21:36:02,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:36:02,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 27 [2021-12-18 21:36:02,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 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 13 [2021-12-18 21:36:03,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-18 21:36:03,292 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:36:03,292 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 60 treesize of output 53 [2021-12-18 21:36:03,892 INFO L354 Elim1Store]: treesize reduction 72, result has 44.2 percent of original size [2021-12-18 21:36:03,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 48 treesize of output 89 [2021-12-18 21:36:04,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 55 [2021-12-18 21:36:04,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:36:04,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-12-18 21:36:06,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:36:07,027 INFO L354 Elim1Store]: treesize reduction 66, result has 14.3 percent of original size [2021-12-18 21:36:07,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 128 treesize of output 115 [2021-12-18 21:36:07,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:36:07,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 85 [2021-12-18 21:36:07,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 23 [2021-12-18 21:36:07,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 61 [2021-12-18 21:36:07,763 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:36:07,763 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 102 treesize of output 87 [2021-12-18 21:36:08,611 INFO L354 Elim1Store]: treesize reduction 78, result has 43.9 percent of original size [2021-12-18 21:36:08,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 54 treesize of output 97 [2021-12-18 21:36:09,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 91 [2021-12-18 21:36:09,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:36:09,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 43 [2021-12-18 21:36:12,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:36:12,286 INFO L354 Elim1Store]: treesize reduction 58, result has 24.7 percent of original size [2021-12-18 21:36:12,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 161 treesize of output 150 [2021-12-18 21:36:12,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:36:12,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 97 [2021-12-18 21:36:12,384 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 12 treesize of output 11 [2021-12-18 21:36:12,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-12-18 21:36:12,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-12-18 21:36:12,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:36:12,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 23 [2021-12-18 21:36:12,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 57 [2021-12-18 21:36:13,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 57 [2021-12-18 21:36:14,543 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 46 treesize of output 26 [2021-12-18 21:36:15,124 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 50 refuted. 5 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-18 21:36:15,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 21:36:16,117 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6007 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_6007) |c_~#gl_list~0.base|) (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))) (_ bv1 1)))) is different from false [2021-12-18 21:36:16,626 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6018 (_ BitVec 32)) (v_ArrVal_6016 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6017 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6007 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store (let ((.cse0 (store (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) v_ArrVal_6017) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_6016))) (store .cse0 |c_~#gl_list~0.base| (store (select .cse0 |c_~#gl_list~0.base|) |c_~#gl_list~0.offset| v_ArrVal_6018))) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_6007) |c_~#gl_list~0.base|) (bvadd |c_~#gl_list~0.offset| (_ bv4 32)))) (_ bv1 1)))) is different from false [2021-12-18 21:36:16,630 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:36:16,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1394958231] [2021-12-18 21:36:16,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1394958231] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 21:36:16,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [23849537] [2021-12-18 21:36:16,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 21:36:16,630 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-18 21:36:16,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-18 21:36:16,631 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-18 21:36:16,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (64)] Waiting until timeout for monitored process [2021-12-18 21:36:20,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 21:36:20,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 21:36:21,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 121 conjunts are in the unsatisfiable core [2021-12-18 21:36:21,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:36:21,528 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-12-18 21:36:21,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2021-12-18 21:36:21,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:36:22,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:36:22,369 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 7 treesize of output 3 [2021-12-18 21:36:22,383 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 7 treesize of output 3 [2021-12-18 21:36:26,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:36:26,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 44 [2021-12-18 21:36:26,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:36:26,173 INFO L354 Elim1Store]: treesize reduction 44, result has 6.4 percent of original size [2021-12-18 21:36:26,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 38 [2021-12-18 21:36:26,181 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 11 [2021-12-18 21:36:26,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:36:26,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2021-12-18 21:36:26,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-12-18 21:36:26,640 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:36:26,641 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 52 treesize of output 47 [2021-12-18 21:36:27,182 INFO L354 Elim1Store]: treesize reduction 57, result has 44.1 percent of original size [2021-12-18 21:36:27,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 70 [2021-12-18 21:36:27,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 49 [2021-12-18 21:36:27,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:36:27,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-12-18 21:36:34,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:36:34,958 INFO L354 Elim1Store]: treesize reduction 66, result has 14.3 percent of original size [2021-12-18 21:36:34,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 109 treesize of output 100 [2021-12-18 21:36:34,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:36:34,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 74 [2021-12-18 21:36:35,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 23 [2021-12-18 21:36:35,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 53 [2021-12-18 21:36:35,775 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:36:35,775 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 88 treesize of output 77 [2021-12-18 21:36:36,545 INFO L354 Elim1Store]: treesize reduction 74, result has 36.8 percent of original size [2021-12-18 21:36:36,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 74 [2021-12-18 21:36:37,173 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 21:36:37,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2021-12-18 21:36:37,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:36:37,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 40 [2021-12-18 21:36:38,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:36:38,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 84 Killed by 15