./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/lis-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 35987657 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/array-memsafety/lis-alloca-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 319f31ab0b5c801309acd19f3e336c9a25177d3201cf5ea4438ad6227d5f71cf --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 16:54:49,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 16:54:49,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 16:54:49,578 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 16:54:49,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 16:54:49,580 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 16:54:49,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 16:54:49,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 16:54:49,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 16:54:49,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 16:54:49,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 16:54:49,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 16:54:49,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 16:54:49,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 16:54:49,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 16:54:49,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 16:54:49,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 16:54:49,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 16:54:49,612 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 16:54:49,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 16:54:49,619 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 16:54:49,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 16:54:49,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 16:54:49,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 16:54:49,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 16:54:49,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 16:54:49,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 16:54:49,632 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 16:54:49,633 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 16:54:49,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 16:54:49,634 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 16:54:49,634 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 16:54:49,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 16:54:49,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 16:54:49,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 16:54:49,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 16:54:49,639 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 16:54:49,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 16:54:49,640 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 16:54:49,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 16:54:49,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 16:54:49,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 16:54:49,643 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-21 16:54:49,678 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 16:54:49,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 16:54:49,678 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 16:54:49,679 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 16:54:49,679 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 16:54:49,680 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 16:54:49,680 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 16:54:49,681 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 16:54:49,681 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 16:54:49,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 16:54:49,682 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 16:54:49,682 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-21 16:54:49,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 16:54:49,683 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 16:54:49,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 16:54:49,683 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-21 16:54:49,683 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-21 16:54:49,683 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-21 16:54:49,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 16:54:49,684 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 16:54:49,684 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 16:54:49,684 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 16:54:49,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 16:54:49,684 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 16:54:49,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 16:54:49,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 16:54:49,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 16:54:49,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 16:54:49,685 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 16:54:49,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 16:54:49,686 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 319f31ab0b5c801309acd19f3e336c9a25177d3201cf5ea4438ad6227d5f71cf [2022-07-21 16:54:50,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 16:54:50,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 16:54:50,047 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 16:54:50,048 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 16:54:50,049 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 16:54:50,051 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/lis-alloca-1.i [2022-07-21 16:54:50,110 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc5fc94c1/c8c27e36a6684451917353df555c511e/FLAG1b4f99646 [2022-07-21 16:54:50,602 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 16:54:50,603 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/lis-alloca-1.i [2022-07-21 16:54:50,619 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc5fc94c1/c8c27e36a6684451917353df555c511e/FLAG1b4f99646 [2022-07-21 16:54:51,093 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc5fc94c1/c8c27e36a6684451917353df555c511e [2022-07-21 16:54:51,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 16:54:51,096 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 16:54:51,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 16:54:51,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 16:54:51,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 16:54:51,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:54:51" (1/1) ... [2022-07-21 16:54:51,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@489525ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:54:51, skipping insertion in model container [2022-07-21 16:54:51,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:54:51" (1/1) ... [2022-07-21 16:54:51,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 16:54:51,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 16:54:51,470 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 16:54:51,481 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-07-21 16:54:51,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6e99d253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:54:51, skipping insertion in model container [2022-07-21 16:54:51,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 16:54:51,484 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-07-21 16:54:51,486 INFO L158 Benchmark]: Toolchain (without parser) took 388.48ms. Allocated memory is still 56.6MB. Free memory was 34.4MB in the beginning and 38.7MB in the end (delta: -4.2MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. [2022-07-21 16:54:51,487 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 56.6MB. Free memory is still 38.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 16:54:51,488 INFO L158 Benchmark]: CACSL2BoogieTranslator took 386.84ms. Allocated memory is still 56.6MB. Free memory was 34.3MB in the beginning and 38.7MB in the end (delta: -4.4MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. [2022-07-21 16:54:51,490 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 56.6MB. Free memory is still 38.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 386.84ms. Allocated memory is still 56.6MB. Free memory was 34.3MB in the beginning and 38.7MB in the end (delta: -4.4MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 515]: Unsupported Syntax Found a cast between two array/pointer types of different sizes 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/array-memsafety/lis-alloca-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 319f31ab0b5c801309acd19f3e336c9a25177d3201cf5ea4438ad6227d5f71cf --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 16:54:53,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 16:54:53,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 16:54:53,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 16:54:53,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 16:54:53,287 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 16:54:53,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 16:54:53,295 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 16:54:53,298 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 16:54:53,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 16:54:53,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 16:54:53,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 16:54:53,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 16:54:53,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 16:54:53,303 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 16:54:53,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 16:54:53,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 16:54:53,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 16:54:53,306 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 16:54:53,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 16:54:53,309 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 16:54:53,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 16:54:53,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 16:54:53,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 16:54:53,312 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 16:54:53,315 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 16:54:53,315 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 16:54:53,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 16:54:53,316 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 16:54:53,317 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 16:54:53,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 16:54:53,318 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 16:54:53,319 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 16:54:53,319 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 16:54:53,320 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 16:54:53,321 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 16:54:53,321 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 16:54:53,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 16:54:53,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 16:54:53,322 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 16:54:53,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 16:54:53,324 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 16:54:53,328 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-07-21 16:54:53,365 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 16:54:53,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 16:54:53,366 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 16:54:53,366 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 16:54:53,367 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 16:54:53,367 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 16:54:53,368 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 16:54:53,368 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 16:54:53,368 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 16:54:53,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 16:54:53,369 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 16:54:53,369 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-21 16:54:53,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 16:54:53,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 16:54:53,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 16:54:53,375 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-21 16:54:53,376 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-21 16:54:53,376 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-21 16:54:53,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 16:54:53,376 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 16:54:53,376 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 16:54:53,376 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 16:54:53,376 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 16:54:53,377 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 16:54:53,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 16:54:53,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 16:54:53,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 16:54:53,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 16:54:53,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 16:54:53,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 16:54:53,378 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 16:54:53,378 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 16:54:53,378 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 16:54:53,378 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 319f31ab0b5c801309acd19f3e336c9a25177d3201cf5ea4438ad6227d5f71cf [2022-07-21 16:54:53,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 16:54:53,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 16:54:53,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 16:54:53,710 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 16:54:53,711 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 16:54:53,712 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/lis-alloca-1.i [2022-07-21 16:54:53,759 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0832b7e1b/a0cfc72265c24327a218ccf271e27877/FLAG5d4f0520f [2022-07-21 16:54:54,300 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 16:54:54,301 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/lis-alloca-1.i [2022-07-21 16:54:54,316 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0832b7e1b/a0cfc72265c24327a218ccf271e27877/FLAG5d4f0520f [2022-07-21 16:54:54,628 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0832b7e1b/a0cfc72265c24327a218ccf271e27877 [2022-07-21 16:54:54,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 16:54:54,631 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 16:54:54,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 16:54:54,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 16:54:54,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 16:54:54,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:54:54" (1/1) ... [2022-07-21 16:54:54,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62810f86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:54:54, skipping insertion in model container [2022-07-21 16:54:54,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:54:54" (1/1) ... [2022-07-21 16:54:54,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 16:54:54,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 16:54:54,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 16:54:54,997 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-21 16:54:55,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 16:54:55,058 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 16:54:55,066 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 16:54:55,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 16:54:55,138 INFO L208 MainTranslator]: Completed translation [2022-07-21 16:54:55,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:54:55 WrapperNode [2022-07-21 16:54:55,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 16:54:55,140 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 16:54:55,140 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 16:54:55,140 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 16:54:55,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:54:55" (1/1) ... [2022-07-21 16:54:55,181 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:54:55" (1/1) ... [2022-07-21 16:54:55,212 INFO L137 Inliner]: procedures = 117, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 114 [2022-07-21 16:54:55,213 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 16:54:55,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 16:54:55,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 16:54:55,214 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 16:54:55,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:54:55" (1/1) ... [2022-07-21 16:54:55,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:54:55" (1/1) ... [2022-07-21 16:54:55,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:54:55" (1/1) ... [2022-07-21 16:54:55,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:54:55" (1/1) ... [2022-07-21 16:54:55,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:54:55" (1/1) ... [2022-07-21 16:54:55,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:54:55" (1/1) ... [2022-07-21 16:54:55,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:54:55" (1/1) ... [2022-07-21 16:54:55,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 16:54:55,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 16:54:55,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 16:54:55,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 16:54:55,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:54:55" (1/1) ... [2022-07-21 16:54:55,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 16:54:55,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 16:54:55,304 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) [2022-07-21 16:54:55,334 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 [2022-07-21 16:54:55,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-21 16:54:55,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 16:54:55,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 16:54:55,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-21 16:54:55,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 16:54:55,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 16:54:55,511 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 16:54:55,512 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 16:54:55,993 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 16:54:55,998 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 16:54:55,999 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-21 16:54:56,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:54:56 BoogieIcfgContainer [2022-07-21 16:54:56,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 16:54:56,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 16:54:56,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 16:54:56,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 16:54:56,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:54:54" (1/3) ... [2022-07-21 16:54:56,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41762818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:54:56, skipping insertion in model container [2022-07-21 16:54:56,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:54:55" (2/3) ... [2022-07-21 16:54:56,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41762818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:54:56, skipping insertion in model container [2022-07-21 16:54:56,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:54:56" (3/3) ... [2022-07-21 16:54:56,006 INFO L111 eAbstractionObserver]: Analyzing ICFG lis-alloca-1.i [2022-07-21 16:54:56,019 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 16:54:56,019 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2022-07-21 16:54:56,078 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 16:54:56,093 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@51d13a2d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2a0120d4 [2022-07-21 16:54:56,096 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-07-21 16:54:56,100 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 41 states have (on average 1.951219512195122) internal successors, (80), 66 states have internal predecessors, (80), 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) [2022-07-21 16:54:56,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-21 16:54:56,107 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:54:56,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-21 16:54:56,109 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:54:56,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:54:56,115 INFO L85 PathProgramCache]: Analyzing trace with hash 889508873, now seen corresponding path program 1 times [2022-07-21 16:54:56,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:54:56,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [169566898] [2022-07-21 16:54:56,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:54:56,128 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:54:56,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:54:56,135 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) [2022-07-21 16:54:56,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 16:54:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:54:56,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 16:54:56,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:54:56,300 INFO L390 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 [2022-07-21 16:54:56,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:54:56,314 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 16:54:56,314 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:54:56,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [169566898] [2022-07-21 16:54:56,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [169566898] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:54:56,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:54:56,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 16:54:56,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683046279] [2022-07-21 16:54:56,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:54:56,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 16:54:56,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:54:56,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 16:54:56,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 16:54:56,351 INFO L87 Difference]: Start difference. First operand has 67 states, 41 states have (on average 1.951219512195122) internal successors, (80), 66 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:54:56,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:54:56,517 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2022-07-21 16:54:56,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 16:54:56,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-07-21 16:54:56,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:54:56,526 INFO L225 Difference]: With dead ends: 66 [2022-07-21 16:54:56,527 INFO L226 Difference]: Without dead ends: 64 [2022-07-21 16:54:56,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 16:54:56,533 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 62 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 16:54:56,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 51 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 16:54:56,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-07-21 16:54:56,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-07-21 16:54:56,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 40 states have (on average 1.8) internal successors, (72), 63 states have internal predecessors, (72), 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) [2022-07-21 16:54:56,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2022-07-21 16:54:56,573 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 6 [2022-07-21 16:54:56,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:54:56,574 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2022-07-21 16:54:56,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:54:56,574 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2022-07-21 16:54:56,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-21 16:54:56,575 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:54:56,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-21 16:54:56,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-21 16:54:56,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:54:56,788 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:54:56,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:54:56,789 INFO L85 PathProgramCache]: Analyzing trace with hash 889508874, now seen corresponding path program 1 times [2022-07-21 16:54:56,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:54:56,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1463633804] [2022-07-21 16:54:56,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:54:56,790 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:54:56,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:54:56,791 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) [2022-07-21 16:54:56,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-21 16:54:56,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:54:56,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 16:54:56,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:54:56,868 INFO L390 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 [2022-07-21 16:54:56,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:54:56,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 16:54:56,897 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:54:56,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1463633804] [2022-07-21 16:54:56,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1463633804] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:54:56,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:54:56,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 16:54:56,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221907187] [2022-07-21 16:54:56,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:54:56,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 16:54:56,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:54:56,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 16:54:56,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 16:54:56,901 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:54:57,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:54:57,258 INFO L93 Difference]: Finished difference Result 129 states and 144 transitions. [2022-07-21 16:54:57,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 16:54:57,259 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-07-21 16:54:57,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:54:57,261 INFO L225 Difference]: With dead ends: 129 [2022-07-21 16:54:57,261 INFO L226 Difference]: Without dead ends: 129 [2022-07-21 16:54:57,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 16:54:57,262 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 73 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 16:54:57,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 275 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 16:54:57,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-07-21 16:54:57,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 67. [2022-07-21 16:54:57,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 43 states have (on average 1.744186046511628) internal successors, (75), 66 states have internal predecessors, (75), 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) [2022-07-21 16:54:57,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2022-07-21 16:54:57,277 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 6 [2022-07-21 16:54:57,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:54:57,278 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2022-07-21 16:54:57,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:54:57,278 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2022-07-21 16:54:57,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-21 16:54:57,279 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:54:57,279 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-21 16:54:57,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-21 16:54:57,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:54:57,488 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:54:57,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:54:57,489 INFO L85 PathProgramCache]: Analyzing trace with hash 889568456, now seen corresponding path program 1 times [2022-07-21 16:54:57,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:54:57,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1321270138] [2022-07-21 16:54:57,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:54:57,490 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:54:57,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:54:57,491 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) [2022-07-21 16:54:57,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-21 16:54:57,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:54:57,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 16:54:57,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:54:57,564 INFO L390 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 8 treesize of output 7 [2022-07-21 16:54:57,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:54:57,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 16:54:57,631 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:54:57,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1321270138] [2022-07-21 16:54:57,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1321270138] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:54:57,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:54:57,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 16:54:57,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15735] [2022-07-21 16:54:57,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:54:57,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 16:54:57,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:54:57,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 16:54:57,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 16:54:57,634 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:54:57,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:54:57,667 INFO L93 Difference]: Finished difference Result 69 states and 78 transitions. [2022-07-21 16:54:57,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 16:54:57,668 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-07-21 16:54:57,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:54:57,669 INFO L225 Difference]: With dead ends: 69 [2022-07-21 16:54:57,669 INFO L226 Difference]: Without dead ends: 69 [2022-07-21 16:54:57,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 16:54:57,670 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 1 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 16:54:57,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 174 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 29 Unchecked, 0.0s Time] [2022-07-21 16:54:57,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-07-21 16:54:57,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2022-07-21 16:54:57,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 44 states have (on average 1.75) internal successors, (77), 67 states have internal predecessors, (77), 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) [2022-07-21 16:54:57,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions. [2022-07-21 16:54:57,677 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 6 [2022-07-21 16:54:57,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:54:57,677 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions. [2022-07-21 16:54:57,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:54:57,678 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions. [2022-07-21 16:54:57,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-21 16:54:57,678 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:54:57,679 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:54:57,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-21 16:54:57,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:54:57,888 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:54:57,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:54:57,888 INFO L85 PathProgramCache]: Analyzing trace with hash 176742579, now seen corresponding path program 1 times [2022-07-21 16:54:57,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:54:57,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151935999] [2022-07-21 16:54:57,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:54:57,889 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:54:57,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:54:57,891 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) [2022-07-21 16:54:57,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-21 16:54:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:54:57,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 16:54:57,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:54:57,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:54:57,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 16:54:57,992 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:54:57,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [151935999] [2022-07-21 16:54:57,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [151935999] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:54:57,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:54:57,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 16:54:57,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114404110] [2022-07-21 16:54:57,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:54:57,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 16:54:57,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:54:57,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 16:54:57,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 16:54:57,999 INFO L87 Difference]: Start difference. First operand 68 states and 77 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:54:58,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:54:58,039 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2022-07-21 16:54:58,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 16:54:58,040 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-21 16:54:58,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:54:58,040 INFO L225 Difference]: With dead ends: 70 [2022-07-21 16:54:58,041 INFO L226 Difference]: Without dead ends: 70 [2022-07-21 16:54:58,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 16:54:58,042 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 71 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 16:54:58,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 129 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 16:54:58,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-07-21 16:54:58,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2022-07-21 16:54:58,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 42 states have (on average 1.7619047619047619) internal successors, (74), 65 states have internal predecessors, (74), 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) [2022-07-21 16:54:58,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2022-07-21 16:54:58,047 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 8 [2022-07-21 16:54:58,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:54:58,048 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2022-07-21 16:54:58,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:54:58,048 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2022-07-21 16:54:58,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-21 16:54:58,048 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:54:58,049 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:54:58,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-21 16:54:58,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:54:58,258 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:54:58,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:54:58,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1091210163, now seen corresponding path program 1 times [2022-07-21 16:54:58,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:54:58,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1866111728] [2022-07-21 16:54:58,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:54:58,260 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:54:58,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:54:58,268 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) [2022-07-21 16:54:58,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-21 16:54:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:54:58,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 16:54:58,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:54:58,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:54:58,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 16:54:58,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:54:58,394 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:54:58,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1866111728] [2022-07-21 16:54:58,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1866111728] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 16:54:58,395 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 16:54:58,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-21 16:54:58,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920945905] [2022-07-21 16:54:58,395 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 16:54:58,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 16:54:58,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:54:58,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 16:54:58,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-07-21 16:54:58,397 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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) [2022-07-21 16:54:58,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:54:58,465 INFO L93 Difference]: Finished difference Result 127 states and 141 transitions. [2022-07-21 16:54:58,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 16:54:58,470 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 10 [2022-07-21 16:54:58,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:54:58,471 INFO L225 Difference]: With dead ends: 127 [2022-07-21 16:54:58,471 INFO L226 Difference]: Without dead ends: 127 [2022-07-21 16:54:58,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-07-21 16:54:58,472 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 317 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 16:54:58,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 255 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 16:54:58,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-07-21 16:54:58,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 72. [2022-07-21 16:54:58,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 48 states have (on average 1.6666666666666667) internal successors, (80), 71 states have internal predecessors, (80), 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) [2022-07-21 16:54:58,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2022-07-21 16:54:58,477 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 10 [2022-07-21 16:54:58,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:54:58,478 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2022-07-21 16:54:58,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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) [2022-07-21 16:54:58,478 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2022-07-21 16:54:58,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-21 16:54:58,478 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:54:58,478 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:54:58,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-21 16:54:58,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:54:58,679 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:54:58,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:54:58,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1900556789, now seen corresponding path program 1 times [2022-07-21 16:54:58,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:54:58,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [931506349] [2022-07-21 16:54:58,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:54:58,680 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:54:58,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:54:58,682 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) [2022-07-21 16:54:58,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-21 16:54:58,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:54:58,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 16:54:58,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:54:58,743 INFO L390 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 8 treesize of output 7 [2022-07-21 16:54:58,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:54:58,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 16:54:59,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:54:59,366 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:54:59,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [931506349] [2022-07-21 16:54:59,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [931506349] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 16:54:59,366 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 16:54:59,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-07-21 16:54:59,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932707369] [2022-07-21 16:54:59,367 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 16:54:59,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 16:54:59,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:54:59,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 16:54:59,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-21 16:54:59,368 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 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) [2022-07-21 16:55:00,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:00,183 INFO L93 Difference]: Finished difference Result 135 states and 151 transitions. [2022-07-21 16:55:00,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 16:55:00,184 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 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 10 [2022-07-21 16:55:00,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:00,185 INFO L225 Difference]: With dead ends: 135 [2022-07-21 16:55:00,185 INFO L226 Difference]: Without dead ends: 135 [2022-07-21 16:55:00,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-21 16:55:00,186 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 324 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:00,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 267 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 152 Invalid, 0 Unknown, 5 Unchecked, 0.8s Time] [2022-07-21 16:55:00,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-07-21 16:55:00,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 80. [2022-07-21 16:55:00,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 56 states have (on average 1.6071428571428572) internal successors, (90), 79 states have internal predecessors, (90), 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) [2022-07-21 16:55:00,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2022-07-21 16:55:00,191 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 10 [2022-07-21 16:55:00,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:00,191 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2022-07-21 16:55:00,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 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) [2022-07-21 16:55:00,192 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2022-07-21 16:55:00,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-21 16:55:00,192 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:00,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:55:00,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-21 16:55:00,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:55:00,393 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:55:00,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:00,393 INFO L85 PathProgramCache]: Analyzing trace with hash -680998152, now seen corresponding path program 1 times [2022-07-21 16:55:00,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:55:00,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [762490154] [2022-07-21 16:55:00,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:00,394 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:55:00,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:55:00,395 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) [2022-07-21 16:55:00,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-21 16:55:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:55:00,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 16:55:00,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:00,470 INFO L356 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-07-21 16:55:00,471 INFO L390 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 20 treesize of output 22 [2022-07-21 16:55:00,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 16:55:00,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 16:55:00,485 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:55:00,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [762490154] [2022-07-21 16:55:00,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [762490154] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:55:00,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:55:00,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 16:55:00,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522336450] [2022-07-21 16:55:00,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:55:00,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 16:55:00,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:55:00,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 16:55:00,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 16:55:00,488 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-07-21 16:55:00,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:00,620 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2022-07-21 16:55:00,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 16:55:00,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2022-07-21 16:55:00,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:00,622 INFO L225 Difference]: With dead ends: 73 [2022-07-21 16:55:00,622 INFO L226 Difference]: Without dead ends: 73 [2022-07-21 16:55:00,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 16:55:00,623 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 49 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:00,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 49 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 16:55:00,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-07-21 16:55:00,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-07-21 16:55:00,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 56 states have (on average 1.4821428571428572) internal successors, (83), 72 states have internal predecessors, (83), 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) [2022-07-21 16:55:00,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2022-07-21 16:55:00,628 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 12 [2022-07-21 16:55:00,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:00,628 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2022-07-21 16:55:00,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-07-21 16:55:00,629 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2022-07-21 16:55:00,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-21 16:55:00,629 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:00,629 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:55:00,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-21 16:55:00,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:55:00,830 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:55:00,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:00,831 INFO L85 PathProgramCache]: Analyzing trace with hash -680998151, now seen corresponding path program 1 times [2022-07-21 16:55:00,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:55:00,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1800340759] [2022-07-21 16:55:00,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:00,831 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:55:00,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:55:00,832 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) [2022-07-21 16:55:00,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-21 16:55:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:55:00,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-21 16:55:00,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:00,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:55:00,928 INFO L390 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 9 treesize of output 11 [2022-07-21 16:55:00,933 INFO L390 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 11 treesize of output 9 [2022-07-21 16:55:00,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 16:55:00,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 16:55:00,959 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:55:00,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1800340759] [2022-07-21 16:55:00,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1800340759] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:55:00,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:55:00,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 16:55:00,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254517887] [2022-07-21 16:55:00,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:55:00,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 16:55:00,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:55:00,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 16:55:00,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 16:55:00,961 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-07-21 16:55:01,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:01,178 INFO L93 Difference]: Finished difference Result 128 states and 145 transitions. [2022-07-21 16:55:01,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 16:55:01,179 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), 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 12 [2022-07-21 16:55:01,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:01,180 INFO L225 Difference]: With dead ends: 128 [2022-07-21 16:55:01,180 INFO L226 Difference]: Without dead ends: 128 [2022-07-21 16:55:01,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 16:55:01,181 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 66 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:01,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 139 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 16:55:01,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-07-21 16:55:01,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 76. [2022-07-21 16:55:01,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 59 states have (on average 1.4745762711864407) internal successors, (87), 75 states have internal predecessors, (87), 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) [2022-07-21 16:55:01,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2022-07-21 16:55:01,192 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 12 [2022-07-21 16:55:01,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:01,192 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2022-07-21 16:55:01,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-07-21 16:55:01,193 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2022-07-21 16:55:01,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-21 16:55:01,193 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:01,193 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:55:01,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-21 16:55:01,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:55:01,400 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:55:01,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:01,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1074025161, now seen corresponding path program 1 times [2022-07-21 16:55:01,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:55:01,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1122537478] [2022-07-21 16:55:01,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:01,401 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:55:01,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:55:01,403 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) [2022-07-21 16:55:01,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-21 16:55:01,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:55:01,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-21 16:55:01,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:01,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:55:01,500 INFO L390 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 11 treesize of output 13 [2022-07-21 16:55:01,505 INFO L390 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 11 treesize of output 9 [2022-07-21 16:55:01,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 16:55:01,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 16:55:01,558 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:55:01,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1122537478] [2022-07-21 16:55:01,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1122537478] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:55:01,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:55:01,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 16:55:01,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26791314] [2022-07-21 16:55:01,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:55:01,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 16:55:01,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:55:01,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 16:55:01,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 16:55:01,559 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2022-07-21 16:55:01,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:01,775 INFO L93 Difference]: Finished difference Result 118 states and 135 transitions. [2022-07-21 16:55:01,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 16:55:01,776 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2022-07-21 16:55:01,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:01,777 INFO L225 Difference]: With dead ends: 118 [2022-07-21 16:55:01,777 INFO L226 Difference]: Without dead ends: 118 [2022-07-21 16:55:01,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 16:55:01,778 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 51 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:01,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 159 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 41 Unchecked, 0.2s Time] [2022-07-21 16:55:01,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-07-21 16:55:01,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 75. [2022-07-21 16:55:01,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 58 states have (on average 1.4827586206896552) internal successors, (86), 74 states have internal predecessors, (86), 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) [2022-07-21 16:55:01,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2022-07-21 16:55:01,782 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 12 [2022-07-21 16:55:01,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:01,782 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2022-07-21 16:55:01,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2022-07-21 16:55:01,783 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2022-07-21 16:55:01,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-21 16:55:01,783 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:01,783 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:55:01,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-21 16:55:01,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:55:01,984 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:55:01,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:01,984 INFO L85 PathProgramCache]: Analyzing trace with hash 363893777, now seen corresponding path program 1 times [2022-07-21 16:55:01,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:55:01,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [622066436] [2022-07-21 16:55:01,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:01,985 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:55:01,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:55:01,986 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) [2022-07-21 16:55:01,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-21 16:55:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:55:02,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 16:55:02,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:02,057 INFO L356 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2022-07-21 16:55:02,058 INFO L390 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 1 case distinctions, treesize of input 9 treesize of output 18 [2022-07-21 16:55:02,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 16:55:02,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 16:55:02,071 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:55:02,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [622066436] [2022-07-21 16:55:02,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [622066436] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:55:02,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:55:02,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 16:55:02,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101185045] [2022-07-21 16:55:02,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:55:02,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 16:55:02,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:55:02,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 16:55:02,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 16:55:02,073 INFO L87 Difference]: Start difference. First operand 75 states and 86 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:55:02,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:02,156 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2022-07-21 16:55:02,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 16:55:02,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-21 16:55:02,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:02,156 INFO L225 Difference]: With dead ends: 73 [2022-07-21 16:55:02,156 INFO L226 Difference]: Without dead ends: 73 [2022-07-21 16:55:02,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 16:55:02,157 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 46 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:02,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 54 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 16:55:02,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-07-21 16:55:02,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-07-21 16:55:02,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 58 states have (on average 1.4482758620689655) internal successors, (84), 72 states have internal predecessors, (84), 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) [2022-07-21 16:55:02,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 84 transitions. [2022-07-21 16:55:02,161 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 84 transitions. Word has length 13 [2022-07-21 16:55:02,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:02,161 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 84 transitions. [2022-07-21 16:55:02,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:55:02,161 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 84 transitions. [2022-07-21 16:55:02,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-21 16:55:02,161 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:02,161 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:55:02,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-21 16:55:02,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:55:02,368 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:55:02,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:02,368 INFO L85 PathProgramCache]: Analyzing trace with hash 363893778, now seen corresponding path program 1 times [2022-07-21 16:55:02,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:55:02,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [402830389] [2022-07-21 16:55:02,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:02,369 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:55:02,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:55:02,370 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) [2022-07-21 16:55:02,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-21 16:55:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:55:02,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 16:55:02,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:02,465 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 16:55:02,465 INFO L390 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-21 16:55:02,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 16:55:02,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 16:55:02,506 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:55:02,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [402830389] [2022-07-21 16:55:02,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [402830389] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:55:02,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:55:02,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 16:55:02,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570114584] [2022-07-21 16:55:02,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:55:02,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 16:55:02,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:55:02,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 16:55:02,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 16:55:02,508 INFO L87 Difference]: Start difference. First operand 73 states and 84 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:55:02,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:02,681 INFO L93 Difference]: Finished difference Result 124 states and 142 transitions. [2022-07-21 16:55:02,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 16:55:02,681 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-21 16:55:02,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:02,682 INFO L225 Difference]: With dead ends: 124 [2022-07-21 16:55:02,682 INFO L226 Difference]: Without dead ends: 124 [2022-07-21 16:55:02,682 INFO L412 NwaCegarLoop]: 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 [2022-07-21 16:55:02,683 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 59 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:02,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 133 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 16:55:02,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-07-21 16:55:02,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 77. [2022-07-21 16:55:02,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 62 states have (on average 1.435483870967742) internal successors, (89), 76 states have internal predecessors, (89), 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) [2022-07-21 16:55:02,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 89 transitions. [2022-07-21 16:55:02,686 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 89 transitions. Word has length 13 [2022-07-21 16:55:02,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:02,692 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 89 transitions. [2022-07-21 16:55:02,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:55:02,693 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 89 transitions. [2022-07-21 16:55:02,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-21 16:55:02,693 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:02,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:55:02,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-21 16:55:02,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:55:02,899 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:55:02,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:02,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1064958356, now seen corresponding path program 1 times [2022-07-21 16:55:02,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:55:02,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347928445] [2022-07-21 16:55:02,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:02,900 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:55:02,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:55:02,901 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) [2022-07-21 16:55:02,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-21 16:55:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:55:02,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 16:55:02,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:02,998 INFO L356 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-07-21 16:55:02,999 INFO L390 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 1 case distinctions, treesize of input 11 treesize of output 17 [2022-07-21 16:55:03,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 16:55:03,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 16:55:03,066 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:55:03,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347928445] [2022-07-21 16:55:03,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [347928445] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:55:03,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:55:03,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 16:55:03,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788890145] [2022-07-21 16:55:03,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:55:03,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 16:55:03,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:55:03,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 16:55:03,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 16:55:03,068 INFO L87 Difference]: Start difference. First operand 77 states and 89 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:55:03,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:03,290 INFO L93 Difference]: Finished difference Result 117 states and 134 transitions. [2022-07-21 16:55:03,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 16:55:03,291 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-21 16:55:03,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:03,292 INFO L225 Difference]: With dead ends: 117 [2022-07-21 16:55:03,292 INFO L226 Difference]: Without dead ends: 117 [2022-07-21 16:55:03,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 16:55:03,293 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 50 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:03,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 149 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 43 Unchecked, 0.2s Time] [2022-07-21 16:55:03,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-07-21 16:55:03,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 74. [2022-07-21 16:55:03,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 59 states have (on average 1.4406779661016949) internal successors, (85), 73 states have internal predecessors, (85), 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) [2022-07-21 16:55:03,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 85 transitions. [2022-07-21 16:55:03,296 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 85 transitions. Word has length 13 [2022-07-21 16:55:03,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:03,296 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 85 transitions. [2022-07-21 16:55:03,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:55:03,296 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 85 transitions. [2022-07-21 16:55:03,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-21 16:55:03,296 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:03,296 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:55:03,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-21 16:55:03,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:55:03,503 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:55:03,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:03,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1808065813, now seen corresponding path program 1 times [2022-07-21 16:55:03,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:55:03,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345854361] [2022-07-21 16:55:03,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:03,505 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:55:03,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:55:03,506 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) [2022-07-21 16:55:03,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-21 16:55:03,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:55:03,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 16:55:03,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:03,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 16:55:03,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 16:55:03,585 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:55:03,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345854361] [2022-07-21 16:55:03,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1345854361] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:55:03,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:55:03,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 16:55:03,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963467653] [2022-07-21 16:55:03,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:55:03,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 16:55:03,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:55:03,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 16:55:03,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 16:55:03,586 INFO L87 Difference]: Start difference. First operand 74 states and 85 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2022-07-21 16:55:03,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:03,791 INFO L93 Difference]: Finished difference Result 124 states and 141 transitions. [2022-07-21 16:55:03,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 16:55:03,791 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2022-07-21 16:55:03,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:03,792 INFO L225 Difference]: With dead ends: 124 [2022-07-21 16:55:03,792 INFO L226 Difference]: Without dead ends: 124 [2022-07-21 16:55:03,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 16:55:03,793 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 58 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:03,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 208 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 16:55:03,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-07-21 16:55:03,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 76. [2022-07-21 16:55:03,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 61 states have (on average 1.4262295081967213) internal successors, (87), 75 states have internal predecessors, (87), 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) [2022-07-21 16:55:03,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2022-07-21 16:55:03,797 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 15 [2022-07-21 16:55:03,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:03,797 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2022-07-21 16:55:03,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2022-07-21 16:55:03,798 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2022-07-21 16:55:03,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-21 16:55:03,798 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:03,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:55:03,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-21 16:55:04,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:55:04,008 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:55:04,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:04,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1221259799, now seen corresponding path program 1 times [2022-07-21 16:55:04,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:55:04,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2096803720] [2022-07-21 16:55:04,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:04,008 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:55:04,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:55:04,010 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) [2022-07-21 16:55:04,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-21 16:55:04,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:55:04,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 16:55:04,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:04,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:55:04,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 16:55:04,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:55:04,254 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:55:04,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2096803720] [2022-07-21 16:55:04,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2096803720] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 16:55:04,254 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 16:55:04,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2022-07-21 16:55:04,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535768011] [2022-07-21 16:55:04,255 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 16:55:04,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 16:55:04,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:55:04,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 16:55:04,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-07-21 16:55:04,256 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 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) [2022-07-21 16:55:04,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:04,685 INFO L93 Difference]: Finished difference Result 126 states and 142 transitions. [2022-07-21 16:55:04,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 16:55:04,686 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 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 15 [2022-07-21 16:55:04,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:04,687 INFO L225 Difference]: With dead ends: 126 [2022-07-21 16:55:04,687 INFO L226 Difference]: Without dead ends: 126 [2022-07-21 16:55:04,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-07-21 16:55:04,688 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 375 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:04,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 170 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 16:55:04,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-07-21 16:55:04,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 74. [2022-07-21 16:55:04,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 59 states have (on average 1.423728813559322) internal successors, (84), 73 states have internal predecessors, (84), 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) [2022-07-21 16:55:04,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 84 transitions. [2022-07-21 16:55:04,691 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 84 transitions. Word has length 15 [2022-07-21 16:55:04,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:04,691 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 84 transitions. [2022-07-21 16:55:04,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 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) [2022-07-21 16:55:04,691 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 84 transitions. [2022-07-21 16:55:04,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-21 16:55:04,692 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:04,692 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:55:04,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-21 16:55:04,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:55:04,895 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:55:04,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:04,896 INFO L85 PathProgramCache]: Analyzing trace with hash 262068158, now seen corresponding path program 1 times [2022-07-21 16:55:04,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:55:04,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [32838191] [2022-07-21 16:55:04,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:04,896 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:55:04,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:55:04,897 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) [2022-07-21 16:55:04,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-21 16:55:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:55:04,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 16:55:04,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:05,012 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 16:55:05,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 16:55:05,064 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 16:55:05,065 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:55:05,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [32838191] [2022-07-21 16:55:05,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [32838191] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 16:55:05,065 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 16:55:05,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-21 16:55:05,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779834181] [2022-07-21 16:55:05,065 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 16:55:05,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 16:55:05,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:55:05,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 16:55:05,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 16:55:05,066 INFO L87 Difference]: Start difference. First operand 74 states and 84 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 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) [2022-07-21 16:55:05,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:05,240 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2022-07-21 16:55:05,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 16:55:05,241 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 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 16 [2022-07-21 16:55:05,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:05,241 INFO L225 Difference]: With dead ends: 96 [2022-07-21 16:55:05,242 INFO L226 Difference]: Without dead ends: 96 [2022-07-21 16:55:05,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-21 16:55:05,242 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 53 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:05,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 222 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 16:55:05,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-07-21 16:55:05,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2022-07-21 16:55:05,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 75 states have (on average 1.3733333333333333) internal successors, (103), 89 states have internal predecessors, (103), 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) [2022-07-21 16:55:05,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 103 transitions. [2022-07-21 16:55:05,245 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 103 transitions. Word has length 16 [2022-07-21 16:55:05,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:05,245 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 103 transitions. [2022-07-21 16:55:05,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 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) [2022-07-21 16:55:05,246 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 103 transitions. [2022-07-21 16:55:05,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-21 16:55:05,246 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:05,246 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:55:05,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-21 16:55:05,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:55:05,455 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:55:05,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:05,456 INFO L85 PathProgramCache]: Analyzing trace with hash -749049092, now seen corresponding path program 1 times [2022-07-21 16:55:05,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:55:05,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1683617306] [2022-07-21 16:55:05,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:05,456 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:55:05,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:55:05,458 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) [2022-07-21 16:55:05,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-21 16:55:05,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:55:05,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 16:55:05,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:05,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:55:05,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 16:55:05,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:55:05,785 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:55:05,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1683617306] [2022-07-21 16:55:05,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1683617306] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 16:55:05,785 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 16:55:05,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2022-07-21 16:55:05,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91572766] [2022-07-21 16:55:05,786 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 16:55:05,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 16:55:05,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:55:05,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 16:55:05,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-07-21 16:55:05,787 INFO L87 Difference]: Start difference. First operand 90 states and 103 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 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) [2022-07-21 16:55:06,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:06,237 INFO L93 Difference]: Finished difference Result 112 states and 125 transitions. [2022-07-21 16:55:06,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 16:55:06,239 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 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 16 [2022-07-21 16:55:06,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:06,240 INFO L225 Difference]: With dead ends: 112 [2022-07-21 16:55:06,240 INFO L226 Difference]: Without dead ends: 112 [2022-07-21 16:55:06,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-21 16:55:06,241 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 147 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:06,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 349 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 16:55:06,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-07-21 16:55:06,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 90. [2022-07-21 16:55:06,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 75 states have (on average 1.3733333333333333) internal successors, (103), 89 states have internal predecessors, (103), 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) [2022-07-21 16:55:06,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 103 transitions. [2022-07-21 16:55:06,243 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 103 transitions. Word has length 16 [2022-07-21 16:55:06,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:06,244 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 103 transitions. [2022-07-21 16:55:06,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 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) [2022-07-21 16:55:06,244 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 103 transitions. [2022-07-21 16:55:06,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-21 16:55:06,244 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:06,245 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1] [2022-07-21 16:55:06,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-21 16:55:06,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:55:06,456 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:55:06,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:06,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1817992175, now seen corresponding path program 2 times [2022-07-21 16:55:06,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:55:06,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255959705] [2022-07-21 16:55:06,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 16:55:06,457 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:55:06,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:55:06,458 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 16:55:06,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-21 16:55:06,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 16:55:06,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 16:55:06,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-21 16:55:06,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:06,538 INFO L390 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 8 treesize of output 7 [2022-07-21 16:55:06,802 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:55:06,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 16:55:07,625 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:55:07,625 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:55:07,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255959705] [2022-07-21 16:55:07,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1255959705] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 16:55:07,626 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 16:55:07,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-07-21 16:55:07,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845262730] [2022-07-21 16:55:07,626 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 16:55:07,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 16:55:07,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:55:07,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 16:55:07,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-07-21 16:55:07,627 INFO L87 Difference]: Start difference. First operand 90 states and 103 transitions. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 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) [2022-07-21 16:55:10,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:10,254 INFO L93 Difference]: Finished difference Result 212 states and 238 transitions. [2022-07-21 16:55:10,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 16:55:10,256 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 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 18 [2022-07-21 16:55:10,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:10,257 INFO L225 Difference]: With dead ends: 212 [2022-07-21 16:55:10,257 INFO L226 Difference]: Without dead ends: 212 [2022-07-21 16:55:10,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2022-07-21 16:55:10,258 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 427 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:10,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 619 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 464 Invalid, 0 Unknown, 9 Unchecked, 1.5s Time] [2022-07-21 16:55:10,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-07-21 16:55:10,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 106. [2022-07-21 16:55:10,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 91 states have (on average 1.3516483516483517) internal successors, (123), 105 states have internal predecessors, (123), 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) [2022-07-21 16:55:10,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 123 transitions. [2022-07-21 16:55:10,261 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 123 transitions. Word has length 18 [2022-07-21 16:55:10,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:10,262 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 123 transitions. [2022-07-21 16:55:10,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 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) [2022-07-21 16:55:10,262 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 123 transitions. [2022-07-21 16:55:10,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-21 16:55:10,262 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:10,262 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:55:10,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-21 16:55:10,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:55:10,471 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:55:10,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:10,471 INFO L85 PathProgramCache]: Analyzing trace with hash -302012765, now seen corresponding path program 1 times [2022-07-21 16:55:10,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:55:10,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1743030917] [2022-07-21 16:55:10,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:10,472 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:55:10,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:55:10,473 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) [2022-07-21 16:55:10,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-21 16:55:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:55:10,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 16:55:10,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:10,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 16:55:10,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 16:55:10,791 INFO L390 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 25 treesize of output 21 [2022-07-21 16:55:10,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 16:55:10,857 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:55:10,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1743030917] [2022-07-21 16:55:10,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1743030917] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 16:55:10,857 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 16:55:10,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-07-21 16:55:10,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900864088] [2022-07-21 16:55:10,858 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 16:55:10,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 16:55:10,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:55:10,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 16:55:10,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-21 16:55:10,858 INFO L87 Difference]: Start difference. First operand 106 states and 123 transitions. Second operand has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 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) [2022-07-21 16:55:11,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:11,536 INFO L93 Difference]: Finished difference Result 163 states and 187 transitions. [2022-07-21 16:55:11,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 16:55:11,538 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 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 20 [2022-07-21 16:55:11,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:11,539 INFO L225 Difference]: With dead ends: 163 [2022-07-21 16:55:11,539 INFO L226 Difference]: Without dead ends: 163 [2022-07-21 16:55:11,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-21 16:55:11,539 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 165 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:11,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 157 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 16:55:11,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-07-21 16:55:11,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 117. [2022-07-21 16:55:11,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 103 states have (on average 1.3689320388349515) internal successors, (141), 116 states have internal predecessors, (141), 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) [2022-07-21 16:55:11,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 141 transitions. [2022-07-21 16:55:11,543 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 141 transitions. Word has length 20 [2022-07-21 16:55:11,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:11,543 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 141 transitions. [2022-07-21 16:55:11,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 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) [2022-07-21 16:55:11,543 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 141 transitions. [2022-07-21 16:55:11,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-21 16:55:11,544 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:11,544 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:55:11,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-07-21 16:55:11,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:55:11,745 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:55:11,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:11,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1581646975, now seen corresponding path program 2 times [2022-07-21 16:55:11,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:55:11,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [712493997] [2022-07-21 16:55:11,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 16:55:11,746 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:55:11,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:55:11,747 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 16:55:11,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-21 16:55:11,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 16:55:11,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 16:55:11,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-21 16:55:11,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:11,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:55:11,869 INFO L390 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 11 treesize of output 13 [2022-07-21 16:55:11,879 INFO L390 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 11 treesize of output 9 [2022-07-21 16:55:11,979 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 16:55:11,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 16:55:12,318 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:55:12,385 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 16:55:12,386 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:55:12,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [712493997] [2022-07-21 16:55:12,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [712493997] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 16:55:12,386 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 16:55:12,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-07-21 16:55:12,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679387442] [2022-07-21 16:55:12,386 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 16:55:12,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 16:55:12,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:55:12,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 16:55:12,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-21 16:55:12,387 INFO L87 Difference]: Start difference. First operand 117 states and 141 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 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) [2022-07-21 16:55:13,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:13,261 INFO L93 Difference]: Finished difference Result 161 states and 195 transitions. [2022-07-21 16:55:13,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 16:55:13,262 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 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 20 [2022-07-21 16:55:13,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:13,262 INFO L225 Difference]: With dead ends: 161 [2022-07-21 16:55:13,263 INFO L226 Difference]: Without dead ends: 161 [2022-07-21 16:55:13,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-07-21 16:55:13,263 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 114 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:13,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 247 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 226 Invalid, 0 Unknown, 69 Unchecked, 0.7s Time] [2022-07-21 16:55:13,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-07-21 16:55:13,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 133. [2022-07-21 16:55:13,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 119 states have (on average 1.3697478991596639) internal successors, (163), 132 states have internal predecessors, (163), 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) [2022-07-21 16:55:13,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 163 transitions. [2022-07-21 16:55:13,267 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 163 transitions. Word has length 20 [2022-07-21 16:55:13,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:13,268 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 163 transitions. [2022-07-21 16:55:13,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 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) [2022-07-21 16:55:13,268 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 163 transitions. [2022-07-21 16:55:13,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-21 16:55:13,269 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:13,269 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:55:13,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-07-21 16:55:13,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:55:13,471 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:55:13,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:13,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1786415948, now seen corresponding path program 1 times [2022-07-21 16:55:13,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:55:13,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [199610434] [2022-07-21 16:55:13,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:13,473 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:55:13,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:55:13,474 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) [2022-07-21 16:55:13,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-07-21 16:55:13,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:55:13,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-21 16:55:13,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:13,613 INFO L356 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-07-21 16:55:13,614 INFO L390 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 1 case distinctions, treesize of input 11 treesize of output 17 [2022-07-21 16:55:13,756 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 16:55:13,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 16:55:14,278 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 16:55:14,278 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:55:14,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [199610434] [2022-07-21 16:55:14,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [199610434] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 16:55:14,278 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 16:55:14,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-07-21 16:55:14,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738871816] [2022-07-21 16:55:14,278 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 16:55:14,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 16:55:14,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:55:14,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 16:55:14,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-07-21 16:55:14,279 INFO L87 Difference]: Start difference. First operand 133 states and 163 transitions. Second operand has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 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) [2022-07-21 16:55:15,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:15,351 INFO L93 Difference]: Finished difference Result 153 states and 186 transitions. [2022-07-21 16:55:15,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 16:55:15,352 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 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 21 [2022-07-21 16:55:15,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:15,353 INFO L225 Difference]: With dead ends: 153 [2022-07-21 16:55:15,353 INFO L226 Difference]: Without dead ends: 153 [2022-07-21 16:55:15,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2022-07-21 16:55:15,355 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 123 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:15,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 255 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 226 Invalid, 0 Unknown, 29 Unchecked, 0.7s Time] [2022-07-21 16:55:15,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-07-21 16:55:15,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 134. [2022-07-21 16:55:15,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 120 states have (on average 1.35) internal successors, (162), 133 states have internal predecessors, (162), 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) [2022-07-21 16:55:15,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 162 transitions. [2022-07-21 16:55:15,364 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 162 transitions. Word has length 21 [2022-07-21 16:55:15,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:15,364 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 162 transitions. [2022-07-21 16:55:15,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 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) [2022-07-21 16:55:15,365 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 162 transitions. [2022-07-21 16:55:15,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-21 16:55:15,365 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:15,365 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:55:15,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-07-21 16:55:15,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:55:15,576 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:55:15,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:15,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1242696241, now seen corresponding path program 1 times [2022-07-21 16:55:15,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:55:15,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1913008613] [2022-07-21 16:55:15,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:15,577 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:55:15,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:55:15,578 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) [2022-07-21 16:55:15,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-07-21 16:55:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:55:15,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-21 16:55:15,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:15,679 INFO L390 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 8 treesize of output 7 [2022-07-21 16:55:15,767 INFO L390 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 17 treesize of output 13 [2022-07-21 16:55:15,931 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:55:15,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 16:55:16,367 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:55:16,367 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:55:16,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1913008613] [2022-07-21 16:55:16,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1913008613] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 16:55:16,368 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 16:55:16,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-07-21 16:55:16,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49349101] [2022-07-21 16:55:16,368 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 16:55:16,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 16:55:16,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:55:16,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 16:55:16,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-07-21 16:55:16,369 INFO L87 Difference]: Start difference. First operand 134 states and 162 transitions. Second operand has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 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) [2022-07-21 16:55:17,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:17,392 INFO L93 Difference]: Finished difference Result 197 states and 237 transitions. [2022-07-21 16:55:17,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 16:55:17,393 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 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 23 [2022-07-21 16:55:17,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:17,394 INFO L225 Difference]: With dead ends: 197 [2022-07-21 16:55:17,394 INFO L226 Difference]: Without dead ends: 197 [2022-07-21 16:55:17,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2022-07-21 16:55:17,395 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 681 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:17,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 386 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 16:55:17,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-07-21 16:55:17,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 125. [2022-07-21 16:55:17,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 111 states have (on average 1.3513513513513513) internal successors, (150), 124 states have internal predecessors, (150), 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) [2022-07-21 16:55:17,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 150 transitions. [2022-07-21 16:55:17,398 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 150 transitions. Word has length 23 [2022-07-21 16:55:17,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:17,399 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 150 transitions. [2022-07-21 16:55:17,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 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) [2022-07-21 16:55:17,399 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 150 transitions. [2022-07-21 16:55:17,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-21 16:55:17,399 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:17,399 INFO L195 NwaCegarLoop]: 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] [2022-07-21 16:55:17,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-07-21 16:55:17,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:55:17,610 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:55:17,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:17,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1547664583, now seen corresponding path program 1 times [2022-07-21 16:55:17,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:55:17,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1598023148] [2022-07-21 16:55:17,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:17,611 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:55:17,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:55:17,612 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) [2022-07-21 16:55:17,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-07-21 16:55:17,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:55:17,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-21 16:55:17,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:17,717 INFO L390 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 11 treesize of output 9 [2022-07-21 16:55:17,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:55:17,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:55:17,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:55:17,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:55:17,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:55:17,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:55:17,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:55:17,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:55:17,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:55:17,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:55:17,761 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:55:17,762 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2022-07-21 16:55:17,813 INFO L390 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 41 [2022-07-21 16:55:17,946 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 16:55:17,946 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 26 [2022-07-21 16:55:17,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 16:55:17,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 16:55:18,073 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_365 (Array (_ BitVec 32) (_ BitVec 8)))) (bvslt |c_ULTIMATE.start_lis_~max~0#1| (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_365) |c_ULTIMATE.start_lis_~best~0#1.base|))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) |c_ULTIMATE.start_lis_~best~0#1.offset|)) (select .cse0 (bvadd (_ bv2 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (select .cse0 |c_ULTIMATE.start_lis_~best~0#1.offset|))))) is different from false [2022-07-21 16:55:18,081 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:55:18,081 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:55:18,082 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:55:18,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:55:18,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:55:18,204 INFO L356 Elim1Store]: treesize reduction 303, result has 14.6 percent of original size [2022-07-21 16:55:18,204 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 203 treesize of output 95 [2022-07-21 16:55:18,330 INFO L356 Elim1Store]: treesize reduction 359, result has 10.3 percent of original size [2022-07-21 16:55:18,330 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 115 treesize of output 98 [2022-07-21 16:55:18,351 INFO L356 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2022-07-21 16:55:18,351 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 27 treesize of output 13 [2022-07-21 16:55:18,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 16:55:18,808 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:55:18,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1598023148] [2022-07-21 16:55:18,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1598023148] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 16:55:18,808 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 16:55:18,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-07-21 16:55:18,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499317637] [2022-07-21 16:55:18,809 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 16:55:18,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 16:55:18,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:55:18,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 16:55:18,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=84, Unknown=1, NotChecked=18, Total=132 [2022-07-21 16:55:18,810 INFO L87 Difference]: Start difference. First operand 125 states and 150 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 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) [2022-07-21 16:55:20,294 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 16:55:20,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:20,600 INFO L93 Difference]: Finished difference Result 167 states and 203 transitions. [2022-07-21 16:55:20,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 16:55:20,602 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 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 26 [2022-07-21 16:55:20,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:20,603 INFO L225 Difference]: With dead ends: 167 [2022-07-21 16:55:20,603 INFO L226 Difference]: Without dead ends: 167 [2022-07-21 16:55:20,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=127, Unknown=1, NotChecked=24, Total=210 [2022-07-21 16:55:20,603 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 61 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:20,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 225 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 156 Invalid, 0 Unknown, 93 Unchecked, 1.6s Time] [2022-07-21 16:55:20,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-07-21 16:55:20,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 149. [2022-07-21 16:55:20,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 135 states have (on average 1.4148148148148147) internal successors, (191), 148 states have internal predecessors, (191), 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) [2022-07-21 16:55:20,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 191 transitions. [2022-07-21 16:55:20,607 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 191 transitions. Word has length 26 [2022-07-21 16:55:20,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:20,607 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 191 transitions. [2022-07-21 16:55:20,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 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) [2022-07-21 16:55:20,607 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 191 transitions. [2022-07-21 16:55:20,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-21 16:55:20,608 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:20,608 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:55:20,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-07-21 16:55:20,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:55:20,817 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:55:20,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:20,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1090844182, now seen corresponding path program 2 times [2022-07-21 16:55:20,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:55:20,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545456000] [2022-07-21 16:55:20,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 16:55:20,818 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:55:20,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:55:20,819 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) [2022-07-21 16:55:20,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-07-21 16:55:20,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 16:55:20,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 16:55:20,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 16:55:20,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:20,888 INFO L390 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 [2022-07-21 16:55:20,937 INFO L356 Elim1Store]: treesize reduction 43, result has 31.7 percent of original size [2022-07-21 16:55:20,937 INFO L390 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 4 case distinctions, treesize of input 20 treesize of output 31 [2022-07-21 16:55:21,061 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 16:55:21,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 16:55:21,062 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:55:21,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545456000] [2022-07-21 16:55:21,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545456000] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:55:21,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:55:21,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 16:55:21,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348396804] [2022-07-21 16:55:21,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:55:21,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 16:55:21,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:55:21,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 16:55:21,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 16:55:21,064 INFO L87 Difference]: Start difference. First operand 149 states and 191 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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) [2022-07-21 16:55:21,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:21,150 INFO L93 Difference]: Finished difference Result 157 states and 203 transitions. [2022-07-21 16:55:21,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 16:55:21,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-07-21 16:55:21,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:21,152 INFO L225 Difference]: With dead ends: 157 [2022-07-21 16:55:21,153 INFO L226 Difference]: Without dead ends: 157 [2022-07-21 16:55:21,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 16:55:21,153 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 10 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:21,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 123 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 24 Unchecked, 0.1s Time] [2022-07-21 16:55:21,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-07-21 16:55:21,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 153. [2022-07-21 16:55:21,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 139 states have (on average 1.4244604316546763) internal successors, (198), 152 states have internal predecessors, (198), 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) [2022-07-21 16:55:21,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 198 transitions. [2022-07-21 16:55:21,156 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 198 transitions. Word has length 27 [2022-07-21 16:55:21,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:21,157 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 198 transitions. [2022-07-21 16:55:21,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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) [2022-07-21 16:55:21,157 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 198 transitions. [2022-07-21 16:55:21,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-21 16:55:21,157 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:21,157 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:55:21,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-07-21 16:55:21,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:55:21,358 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:55:21,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:21,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1090844181, now seen corresponding path program 1 times [2022-07-21 16:55:21,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:55:21,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1359707169] [2022-07-21 16:55:21,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:21,359 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:55:21,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:55:21,360 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) [2022-07-21 16:55:21,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-07-21 16:55:21,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:55:21,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-21 16:55:21,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:21,518 INFO L390 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 8 treesize of output 7 [2022-07-21 16:55:21,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:55:21,699 INFO L356 Elim1Store]: treesize reduction 35, result has 12.5 percent of original size [2022-07-21 16:55:21,700 INFO L390 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 28 treesize of output 30 [2022-07-21 16:55:21,708 INFO L390 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 11 treesize of output 9 [2022-07-21 16:55:22,102 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 16:55:22,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 16:55:22,360 INFO L390 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 11 treesize of output 9 [2022-07-21 16:55:23,140 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 16:55:23,141 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:55:23,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1359707169] [2022-07-21 16:55:23,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1359707169] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 16:55:23,141 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 16:55:23,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2022-07-21 16:55:23,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311500283] [2022-07-21 16:55:23,141 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 16:55:23,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 16:55:23,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:55:23,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 16:55:23,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-21 16:55:23,143 INFO L87 Difference]: Start difference. First operand 153 states and 198 transitions. Second operand has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 13 states have internal predecessors, (44), 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) [2022-07-21 16:55:23,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:23,700 INFO L93 Difference]: Finished difference Result 160 states and 206 transitions. [2022-07-21 16:55:23,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 16:55:23,701 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-07-21 16:55:23,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:23,702 INFO L225 Difference]: With dead ends: 160 [2022-07-21 16:55:23,702 INFO L226 Difference]: Without dead ends: 160 [2022-07-21 16:55:23,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2022-07-21 16:55:23,702 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 104 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 99 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:23,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 268 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 128 Invalid, 0 Unknown, 99 Unchecked, 0.5s Time] [2022-07-21 16:55:23,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-07-21 16:55:23,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 156. [2022-07-21 16:55:23,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 142 states have (on average 1.4295774647887325) internal successors, (203), 155 states have internal predecessors, (203), 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) [2022-07-21 16:55:23,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 203 transitions. [2022-07-21 16:55:23,706 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 203 transitions. Word has length 27 [2022-07-21 16:55:23,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:23,707 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 203 transitions. [2022-07-21 16:55:23,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 13 states have internal predecessors, (44), 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) [2022-07-21 16:55:23,707 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 203 transitions. [2022-07-21 16:55:23,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-21 16:55:23,707 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:23,708 INFO L195 NwaCegarLoop]: 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] [2022-07-21 16:55:23,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-07-21 16:55:23,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:55:23,918 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:55:23,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:23,918 INFO L85 PathProgramCache]: Analyzing trace with hash -397297604, now seen corresponding path program 1 times [2022-07-21 16:55:23,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:55:23,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [581522459] [2022-07-21 16:55:23,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:23,919 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:55:23,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:55:23,920 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) [2022-07-21 16:55:23,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-07-21 16:55:24,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:55:24,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-21 16:55:24,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:30,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 16:55:30,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 16:55:30,339 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:55:30,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [581522459] [2022-07-21 16:55:30,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [581522459] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:55:30,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:55:30,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 16:55:30,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935409119] [2022-07-21 16:55:30,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:55:30,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 16:55:30,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:55:30,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 16:55:30,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=27, Unknown=2, NotChecked=0, Total=42 [2022-07-21 16:55:30,340 INFO L87 Difference]: Start difference. First operand 156 states and 203 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 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) [2022-07-21 16:55:30,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:30,396 INFO L93 Difference]: Finished difference Result 171 states and 219 transitions. [2022-07-21 16:55:30,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 16:55:30,397 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 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 28 [2022-07-21 16:55:30,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:30,397 INFO L225 Difference]: With dead ends: 171 [2022-07-21 16:55:30,398 INFO L226 Difference]: Without dead ends: 146 [2022-07-21 16:55:30,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=13, Invalid=27, Unknown=2, NotChecked=0, Total=42 [2022-07-21 16:55:30,398 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 11 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:30,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 201 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 52 Unchecked, 0.1s Time] [2022-07-21 16:55:30,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-07-21 16:55:30,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2022-07-21 16:55:30,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 130 states have (on average 1.4692307692307693) internal successors, (191), 143 states have internal predecessors, (191), 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) [2022-07-21 16:55:30,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 191 transitions. [2022-07-21 16:55:30,402 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 191 transitions. Word has length 28 [2022-07-21 16:55:30,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:30,403 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 191 transitions. [2022-07-21 16:55:30,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 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) [2022-07-21 16:55:30,403 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 191 transitions. [2022-07-21 16:55:30,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-21 16:55:30,403 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:30,404 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:55:30,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-07-21 16:55:30,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:55:30,611 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:55:30,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:30,612 INFO L85 PathProgramCache]: Analyzing trace with hash 543568763, now seen corresponding path program 1 times [2022-07-21 16:55:30,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:55:30,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2001629178] [2022-07-21 16:55:30,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:30,612 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:55:30,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:55:30,614 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) [2022-07-21 16:55:30,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-07-21 16:55:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:55:30,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 16:55:30,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:30,714 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 16:55:30,714 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 16:55:30,714 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:55:30,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2001629178] [2022-07-21 16:55:30,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2001629178] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:55:30,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:55:30,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 16:55:30,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573473677] [2022-07-21 16:55:30,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:55:30,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 16:55:30,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:55:30,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 16:55:30,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 16:55:30,716 INFO L87 Difference]: Start difference. First operand 144 states and 191 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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) [2022-07-21 16:55:30,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:30,831 INFO L93 Difference]: Finished difference Result 144 states and 183 transitions. [2022-07-21 16:55:30,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 16:55:30,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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 28 [2022-07-21 16:55:30,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:30,832 INFO L225 Difference]: With dead ends: 144 [2022-07-21 16:55:30,833 INFO L226 Difference]: Without dead ends: 144 [2022-07-21 16:55:30,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 16:55:30,834 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 36 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:30,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 87 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 16:55:30,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-07-21 16:55:30,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 141. [2022-07-21 16:55:30,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 129 states have (on average 1.4031007751937985) internal successors, (181), 140 states have internal predecessors, (181), 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) [2022-07-21 16:55:30,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 181 transitions. [2022-07-21 16:55:30,837 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 181 transitions. Word has length 28 [2022-07-21 16:55:30,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:30,838 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 181 transitions. [2022-07-21 16:55:30,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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) [2022-07-21 16:55:30,838 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 181 transitions. [2022-07-21 16:55:30,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-21 16:55:30,838 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:30,839 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:55:30,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-07-21 16:55:31,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:55:31,049 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:55:31,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:31,049 INFO L85 PathProgramCache]: Analyzing trace with hash 543568764, now seen corresponding path program 1 times [2022-07-21 16:55:31,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:55:31,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738636612] [2022-07-21 16:55:31,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:31,050 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:55:31,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:55:31,051 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) [2022-07-21 16:55:31,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-07-21 16:55:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:55:31,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 16:55:31,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:31,233 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 16:55:31,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 16:55:31,234 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:55:31,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738636612] [2022-07-21 16:55:31,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738636612] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:55:31,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:55:31,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 16:55:31,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452802394] [2022-07-21 16:55:31,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:55:31,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 16:55:31,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:55:31,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 16:55:31,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-21 16:55:31,235 INFO L87 Difference]: Start difference. First operand 141 states and 181 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 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) [2022-07-21 16:55:31,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:31,496 INFO L93 Difference]: Finished difference Result 203 states and 259 transitions. [2022-07-21 16:55:31,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 16:55:31,498 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 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 28 [2022-07-21 16:55:31,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:31,499 INFO L225 Difference]: With dead ends: 203 [2022-07-21 16:55:31,499 INFO L226 Difference]: Without dead ends: 203 [2022-07-21 16:55:31,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-07-21 16:55:31,500 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 251 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:31,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 98 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 16:55:31,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-07-21 16:55:31,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 139. [2022-07-21 16:55:31,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 127 states have (on average 1.3858267716535433) internal successors, (176), 138 states have internal predecessors, (176), 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) [2022-07-21 16:55:31,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 176 transitions. [2022-07-21 16:55:31,503 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 176 transitions. Word has length 28 [2022-07-21 16:55:31,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:31,504 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 176 transitions. [2022-07-21 16:55:31,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 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) [2022-07-21 16:55:31,504 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 176 transitions. [2022-07-21 16:55:31,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-21 16:55:31,504 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:31,504 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:55:31,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-07-21 16:55:31,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:55:31,714 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:55:31,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:31,715 INFO L85 PathProgramCache]: Analyzing trace with hash 590171529, now seen corresponding path program 3 times [2022-07-21 16:55:31,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:55:31,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [656347828] [2022-07-21 16:55:31,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 16:55:31,715 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:55:31,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:55:31,717 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) [2022-07-21 16:55:31,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-07-21 16:55:31,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-21 16:55:31,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 16:55:31,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-21 16:55:31,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:31,891 INFO L390 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 8 treesize of output 7 [2022-07-21 16:55:32,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:55:32,077 INFO L356 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2022-07-21 16:55:32,077 INFO L390 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 24 treesize of output 30 [2022-07-21 16:55:32,085 INFO L390 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 11 treesize of output 9 [2022-07-21 16:55:32,346 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:55:32,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 16:55:33,148 INFO L390 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 11 treesize of output 9 [2022-07-21 16:55:33,804 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:55:33,804 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:55:33,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [656347828] [2022-07-21 16:55:33,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [656347828] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 16:55:33,805 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 16:55:33,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2022-07-21 16:55:33,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428729689] [2022-07-21 16:55:33,805 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 16:55:33,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-21 16:55:33,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:55:33,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-21 16:55:33,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2022-07-21 16:55:33,806 INFO L87 Difference]: Start difference. First operand 139 states and 176 transitions. Second operand has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 states have internal predecessors, (54), 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) [2022-07-21 16:55:36,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:36,391 INFO L93 Difference]: Finished difference Result 240 states and 292 transitions. [2022-07-21 16:55:36,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-21 16:55:36,392 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 states have internal predecessors, (54), 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 28 [2022-07-21 16:55:36,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:36,393 INFO L225 Difference]: With dead ends: 240 [2022-07-21 16:55:36,393 INFO L226 Difference]: Without dead ends: 240 [2022-07-21 16:55:36,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=165, Invalid=647, Unknown=0, NotChecked=0, Total=812 [2022-07-21 16:55:36,394 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 275 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 146 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:36,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 335 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 361 Invalid, 0 Unknown, 146 Unchecked, 1.4s Time] [2022-07-21 16:55:36,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-07-21 16:55:36,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 215. [2022-07-21 16:55:36,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 203 states have (on average 1.3300492610837438) internal successors, (270), 214 states have internal predecessors, (270), 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) [2022-07-21 16:55:36,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 270 transitions. [2022-07-21 16:55:36,399 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 270 transitions. Word has length 28 [2022-07-21 16:55:36,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:36,399 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 270 transitions. [2022-07-21 16:55:36,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 states have internal predecessors, (54), 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) [2022-07-21 16:55:36,400 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 270 transitions. [2022-07-21 16:55:36,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-21 16:55:36,401 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:36,401 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:55:36,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-07-21 16:55:36,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:55:36,612 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:55:36,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:36,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1391261449, now seen corresponding path program 1 times [2022-07-21 16:55:36,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:55:36,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1486570924] [2022-07-21 16:55:36,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:36,614 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:55:36,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:55:36,615 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) [2022-07-21 16:55:36,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-07-21 16:55:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:55:36,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 16:55:36,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:36,751 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 16:55:36,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 16:55:36,751 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:55:36,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1486570924] [2022-07-21 16:55:36,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1486570924] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:55:36,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:55:36,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 16:55:36,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846925306] [2022-07-21 16:55:36,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:55:36,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 16:55:36,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:55:36,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 16:55:36,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 16:55:36,753 INFO L87 Difference]: Start difference. First operand 215 states and 270 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2022-07-21 16:55:36,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:36,769 INFO L93 Difference]: Finished difference Result 216 states and 268 transitions. [2022-07-21 16:55:36,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 16:55:36,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 32 [2022-07-21 16:55:36,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:36,770 INFO L225 Difference]: With dead ends: 216 [2022-07-21 16:55:36,770 INFO L226 Difference]: Without dead ends: 216 [2022-07-21 16:55:36,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 16:55:36,771 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:36,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 16:55:36,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-07-21 16:55:36,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2022-07-21 16:55:36,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 205 states have (on average 1.3073170731707318) internal successors, (268), 215 states have internal predecessors, (268), 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) [2022-07-21 16:55:36,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 268 transitions. [2022-07-21 16:55:36,775 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 268 transitions. Word has length 32 [2022-07-21 16:55:36,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:36,775 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 268 transitions. [2022-07-21 16:55:36,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2022-07-21 16:55:36,776 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 268 transitions. [2022-07-21 16:55:36,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-21 16:55:36,776 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:36,776 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:55:36,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-07-21 16:55:36,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:55:36,987 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:55:36,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:36,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1391252418, now seen corresponding path program 1 times [2022-07-21 16:55:36,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:55:36,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961917577] [2022-07-21 16:55:36,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:55:36,988 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:55:36,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:55:36,989 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) [2022-07-21 16:55:36,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-07-21 16:55:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:55:37,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 16:55:37,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:37,203 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 16:55:37,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 16:55:37,420 INFO L390 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 25 treesize of output 21 [2022-07-21 16:55:37,577 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 16:55:37,578 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:55:37,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961917577] [2022-07-21 16:55:37,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961917577] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 16:55:37,578 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 16:55:37,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-07-21 16:55:37,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227032732] [2022-07-21 16:55:37,579 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 16:55:37,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 16:55:37,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:55:37,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 16:55:37,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-21 16:55:37,580 INFO L87 Difference]: Start difference. First operand 216 states and 268 transitions. Second operand has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 10 states have internal predecessors, (47), 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) [2022-07-21 16:55:38,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:38,954 INFO L93 Difference]: Finished difference Result 802 states and 1009 transitions. [2022-07-21 16:55:38,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 16:55:38,955 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 10 states have internal predecessors, (47), 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 32 [2022-07-21 16:55:38,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:38,957 INFO L225 Difference]: With dead ends: 802 [2022-07-21 16:55:38,957 INFO L226 Difference]: Without dead ends: 802 [2022-07-21 16:55:38,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=186, Invalid=414, Unknown=0, NotChecked=0, Total=600 [2022-07-21 16:55:38,958 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 1220 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:38,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 199 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 16:55:38,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2022-07-21 16:55:38,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 311. [2022-07-21 16:55:38,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 301 states have (on average 1.3521594684385383) internal successors, (407), 310 states have internal predecessors, (407), 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) [2022-07-21 16:55:38,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 407 transitions. [2022-07-21 16:55:38,971 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 407 transitions. Word has length 32 [2022-07-21 16:55:38,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:38,971 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 407 transitions. [2022-07-21 16:55:38,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 10 states have internal predecessors, (47), 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) [2022-07-21 16:55:38,971 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 407 transitions. [2022-07-21 16:55:38,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-21 16:55:38,972 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:38,972 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:55:38,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-07-21 16:55:39,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:55:39,182 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:55:39,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:39,183 INFO L85 PathProgramCache]: Analyzing trace with hash 795842271, now seen corresponding path program 2 times [2022-07-21 16:55:39,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:55:39,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [988035187] [2022-07-21 16:55:39,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 16:55:39,183 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:55:39,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:55:39,184 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) [2022-07-21 16:55:39,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-07-21 16:55:39,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 16:55:39,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 16:55:39,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-21 16:55:39,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:39,307 INFO L390 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 11 treesize of output 9 [2022-07-21 16:55:39,316 INFO L390 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 13 treesize of output 15 [2022-07-21 16:55:39,572 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-21 16:55:39,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 16:55:41,824 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:55:41,826 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-21 16:55:41,826 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:55:41,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [988035187] [2022-07-21 16:55:41,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [988035187] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 16:55:41,827 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 16:55:41,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2022-07-21 16:55:41,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980997151] [2022-07-21 16:55:41,827 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 16:55:41,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 16:55:41,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:55:41,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 16:55:41,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 16:55:41,828 INFO L87 Difference]: Start difference. First operand 311 states and 407 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 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) [2022-07-21 16:55:42,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:55:42,075 INFO L93 Difference]: Finished difference Result 322 states and 423 transitions. [2022-07-21 16:55:42,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 16:55:42,076 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 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 33 [2022-07-21 16:55:42,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:55:42,077 INFO L225 Difference]: With dead ends: 322 [2022-07-21 16:55:42,077 INFO L226 Difference]: Without dead ends: 322 [2022-07-21 16:55:42,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-21 16:55:42,078 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 21 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 16:55:42,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 139 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 40 Unchecked, 0.2s Time] [2022-07-21 16:55:42,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-07-21 16:55:42,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 304. [2022-07-21 16:55:42,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 295 states have (on average 1.352542372881356) internal successors, (399), 303 states have internal predecessors, (399), 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) [2022-07-21 16:55:42,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 399 transitions. [2022-07-21 16:55:42,083 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 399 transitions. Word has length 33 [2022-07-21 16:55:42,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:55:42,083 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 399 transitions. [2022-07-21 16:55:42,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 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) [2022-07-21 16:55:42,083 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 399 transitions. [2022-07-21 16:55:42,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-21 16:55:42,083 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:55:42,083 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1] [2022-07-21 16:55:42,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-07-21 16:55:42,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:55:42,284 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:55:42,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:55:42,285 INFO L85 PathProgramCache]: Analyzing trace with hash -563143139, now seen corresponding path program 3 times [2022-07-21 16:55:42,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:55:42,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730527692] [2022-07-21 16:55:42,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 16:55:42,285 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:55:42,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:55:42,286 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 16:55:42,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-07-21 16:55:42,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-07-21 16:55:42,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 16:55:42,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-21 16:55:42,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:55:42,436 INFO L390 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 8 treesize of output 7 [2022-07-21 16:55:42,940 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:55:42,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 16:55:45,804 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:55:45,804 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:55:45,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730527692] [2022-07-21 16:55:45,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730527692] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 16:55:45,805 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 16:55:45,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2022-07-21 16:55:45,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121347688] [2022-07-21 16:55:45,805 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 16:55:45,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-21 16:55:45,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:55:45,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-21 16:55:45,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2022-07-21 16:55:45,806 INFO L87 Difference]: Start difference. First operand 304 states and 399 transitions. Second operand has 24 states, 23 states have (on average 2.869565217391304) internal successors, (66), 24 states have internal predecessors, (66), 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) [2022-07-21 16:56:02,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:56:02,894 INFO L93 Difference]: Finished difference Result 1193 states and 1602 transitions. [2022-07-21 16:56:02,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-21 16:56:02,895 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.869565217391304) internal successors, (66), 24 states have internal predecessors, (66), 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 34 [2022-07-21 16:56:02,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:56:02,898 INFO L225 Difference]: With dead ends: 1193 [2022-07-21 16:56:02,898 INFO L226 Difference]: Without dead ends: 1193 [2022-07-21 16:56:02,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=547, Invalid=1259, Unknown=0, NotChecked=0, Total=1806 [2022-07-21 16:56:02,899 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 2274 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 1354 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2274 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 1478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-07-21 16:56:02,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2274 Valid, 1653 Invalid, 1478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1354 Invalid, 0 Unknown, 31 Unchecked, 4.8s Time] [2022-07-21 16:56:02,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2022-07-21 16:56:02,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 336. [2022-07-21 16:56:02,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 327 states have (on average 1.342507645259939) internal successors, (439), 335 states have internal predecessors, (439), 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) [2022-07-21 16:56:02,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 439 transitions. [2022-07-21 16:56:02,910 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 439 transitions. Word has length 34 [2022-07-21 16:56:02,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:56:02,910 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 439 transitions. [2022-07-21 16:56:02,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.869565217391304) internal successors, (66), 24 states have internal predecessors, (66), 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) [2022-07-21 16:56:02,910 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 439 transitions. [2022-07-21 16:56:02,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-21 16:56:02,911 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:56:02,911 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 16:56:02,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-07-21 16:56:03,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:56:03,121 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:56:03,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:56:03,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1267793515, now seen corresponding path program 1 times [2022-07-21 16:56:03,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:56:03,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929866889] [2022-07-21 16:56:03,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:56:03,122 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:56:03,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:56:03,123 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) [2022-07-21 16:56:03,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-07-21 16:56:03,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:56:03,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 16:56:03,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:56:03,265 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 16:56:03,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 16:56:03,299 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 16:56:03,299 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:56:03,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929866889] [2022-07-21 16:56:03,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [929866889] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 16:56:03,299 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 16:56:03,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-21 16:56:03,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56367391] [2022-07-21 16:56:03,300 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 16:56:03,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 16:56:03,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:56:03,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 16:56:03,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-07-21 16:56:03,300 INFO L87 Difference]: Start difference. First operand 336 states and 439 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 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) [2022-07-21 16:56:03,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:56:03,510 INFO L93 Difference]: Finished difference Result 320 states and 404 transitions. [2022-07-21 16:56:03,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 16:56:03,510 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 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 34 [2022-07-21 16:56:03,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:56:03,511 INFO L225 Difference]: With dead ends: 320 [2022-07-21 16:56:03,511 INFO L226 Difference]: Without dead ends: 320 [2022-07-21 16:56:03,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-07-21 16:56:03,512 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 64 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 16:56:03,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 125 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 16:56:03,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-07-21 16:56:03,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 309. [2022-07-21 16:56:03,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 300 states have (on average 1.31) internal successors, (393), 308 states have internal predecessors, (393), 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) [2022-07-21 16:56:03,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 393 transitions. [2022-07-21 16:56:03,516 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 393 transitions. Word has length 34 [2022-07-21 16:56:03,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:56:03,516 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 393 transitions. [2022-07-21 16:56:03,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 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) [2022-07-21 16:56:03,516 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 393 transitions. [2022-07-21 16:56:03,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-21 16:56:03,517 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:56:03,517 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:56:03,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-07-21 16:56:03,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:56:03,727 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:56:03,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:56:03,728 INFO L85 PathProgramCache]: Analyzing trace with hash 717604305, now seen corresponding path program 4 times [2022-07-21 16:56:03,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:56:03,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1813909463] [2022-07-21 16:56:03,728 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-21 16:56:03,728 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:56:03,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:56:03,729 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) [2022-07-21 16:56:03,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-07-21 16:56:03,849 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-21 16:56:03,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 16:56:03,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-21 16:56:03,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:56:03,947 INFO L356 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-07-21 16:56:03,948 INFO L390 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 1 case distinctions, treesize of input 11 treesize of output 17 [2022-07-21 16:56:04,157 INFO L390 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 24 treesize of output 18 [2022-07-21 16:56:04,214 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 16 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 16:56:04,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 16:56:05,028 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 16 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 16:56:05,029 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:56:05,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1813909463] [2022-07-21 16:56:05,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1813909463] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 16:56:05,029 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 16:56:05,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25 [2022-07-21 16:56:05,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892455998] [2022-07-21 16:56:05,029 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 16:56:05,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-21 16:56:05,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:56:05,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-21 16:56:05,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2022-07-21 16:56:05,031 INFO L87 Difference]: Start difference. First operand 309 states and 393 transitions. Second operand has 25 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 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) [2022-07-21 16:56:08,893 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 16:56:11,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:56:11,957 INFO L93 Difference]: Finished difference Result 685 states and 891 transitions. [2022-07-21 16:56:11,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-21 16:56:11,959 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 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 36 [2022-07-21 16:56:11,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:56:11,960 INFO L225 Difference]: With dead ends: 685 [2022-07-21 16:56:11,960 INFO L226 Difference]: Without dead ends: 685 [2022-07-21 16:56:11,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=663, Invalid=2417, Unknown=0, NotChecked=0, Total=3080 [2022-07-21 16:56:11,961 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 1113 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1113 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-07-21 16:56:11,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1113 Valid, 930 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1333 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-07-21 16:56:11,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2022-07-21 16:56:11,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 500. [2022-07-21 16:56:11,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 491 states have (on average 1.3441955193482689) internal successors, (660), 499 states have internal predecessors, (660), 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) [2022-07-21 16:56:11,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 660 transitions. [2022-07-21 16:56:11,976 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 660 transitions. Word has length 36 [2022-07-21 16:56:11,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:56:11,976 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 660 transitions. [2022-07-21 16:56:11,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 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) [2022-07-21 16:56:11,976 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 660 transitions. [2022-07-21 16:56:11,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-21 16:56:11,977 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:56:11,977 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:56:11,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-07-21 16:56:12,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:56:12,188 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:56:12,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:56:12,188 INFO L85 PathProgramCache]: Analyzing trace with hash -411523054, now seen corresponding path program 5 times [2022-07-21 16:56:12,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:56:12,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1500405469] [2022-07-21 16:56:12,189 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-21 16:56:12,189 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:56:12,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:56:12,190 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) [2022-07-21 16:56:12,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-07-21 16:56:12,418 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-07-21 16:56:12,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 16:56:12,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-21 16:56:12,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:56:12,434 INFO L390 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 8 treesize of output 7 [2022-07-21 16:56:12,774 INFO L356 Elim1Store]: treesize reduction 50, result has 20.6 percent of original size [2022-07-21 16:56:12,774 INFO L390 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 2 case distinctions, treesize of input 26 treesize of output 28 [2022-07-21 16:56:13,151 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:56:13,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 16:56:15,068 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:56:15,068 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:56:15,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1500405469] [2022-07-21 16:56:15,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1500405469] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 16:56:15,069 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 16:56:15,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2022-07-21 16:56:15,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358327347] [2022-07-21 16:56:15,069 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 16:56:15,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-21 16:56:15,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:56:15,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-21 16:56:15,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=696, Unknown=0, NotChecked=0, Total=870 [2022-07-21 16:56:15,071 INFO L87 Difference]: Start difference. First operand 500 states and 660 transitions. Second operand has 30 states, 29 states have (on average 2.689655172413793) internal successors, (78), 30 states have internal predecessors, (78), 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) [2022-07-21 16:56:21,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:56:21,049 INFO L93 Difference]: Finished difference Result 565 states and 730 transitions. [2022-07-21 16:56:21,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-21 16:56:21,050 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.689655172413793) internal successors, (78), 30 states have internal predecessors, (78), 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 40 [2022-07-21 16:56:21,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:56:21,052 INFO L225 Difference]: With dead ends: 565 [2022-07-21 16:56:21,052 INFO L226 Difference]: Without dead ends: 565 [2022-07-21 16:56:21,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=479, Invalid=2071, Unknown=0, NotChecked=0, Total=2550 [2022-07-21 16:56:21,053 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 118 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 299 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 16:56:21,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 462 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 384 Invalid, 0 Unknown, 299 Unchecked, 1.4s Time] [2022-07-21 16:56:21,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2022-07-21 16:56:21,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 518. [2022-07-21 16:56:21,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 509 states have (on average 1.337917485265226) internal successors, (681), 517 states have internal predecessors, (681), 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) [2022-07-21 16:56:21,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 681 transitions. [2022-07-21 16:56:21,061 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 681 transitions. Word has length 40 [2022-07-21 16:56:21,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:56:21,061 INFO L495 AbstractCegarLoop]: Abstraction has 518 states and 681 transitions. [2022-07-21 16:56:21,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.689655172413793) internal successors, (78), 30 states have internal predecessors, (78), 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) [2022-07-21 16:56:21,062 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 681 transitions. [2022-07-21 16:56:21,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-21 16:56:21,062 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:56:21,062 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:56:21,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-07-21 16:56:21,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:56:21,274 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:56:21,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:56:21,275 INFO L85 PathProgramCache]: Analyzing trace with hash -282034220, now seen corresponding path program 6 times [2022-07-21 16:56:21,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:56:21,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1172304275] [2022-07-21 16:56:21,275 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-21 16:56:21,275 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:56:21,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:56:21,276 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 16:56:21,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-07-21 16:56:21,473 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-07-21 16:56:21,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 16:56:21,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-21 16:56:21,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:56:21,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:21,524 INFO L390 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 11 treesize of output 13 [2022-07-21 16:56:21,531 INFO L390 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 11 treesize of output 9 [2022-07-21 16:56:21,895 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 16:56:21,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 16:56:23,097 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:23,221 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 16:56:23,221 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:56:23,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1172304275] [2022-07-21 16:56:23,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1172304275] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 16:56:23,222 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 16:56:23,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-07-21 16:56:23,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196742158] [2022-07-21 16:56:23,222 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 16:56:23,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 16:56:23,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:56:23,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 16:56:23,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-07-21 16:56:23,223 INFO L87 Difference]: Start difference. First operand 518 states and 681 transitions. Second operand has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 18 states have internal predecessors, (54), 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) [2022-07-21 16:56:28,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:56:28,151 INFO L93 Difference]: Finished difference Result 903 states and 1184 transitions. [2022-07-21 16:56:28,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-21 16:56:28,152 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 18 states have internal predecessors, (54), 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 40 [2022-07-21 16:56:28,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:56:28,154 INFO L225 Difference]: With dead ends: 903 [2022-07-21 16:56:28,155 INFO L226 Difference]: Without dead ends: 903 [2022-07-21 16:56:28,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=409, Invalid=997, Unknown=0, NotChecked=0, Total=1406 [2022-07-21 16:56:28,155 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 904 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-21 16:56:28,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 505 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 817 Invalid, 0 Unknown, 74 Unchecked, 2.4s Time] [2022-07-21 16:56:28,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2022-07-21 16:56:28,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 699. [2022-07-21 16:56:28,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 690 states have (on average 1.3420289855072465) internal successors, (926), 698 states have internal predecessors, (926), 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) [2022-07-21 16:56:28,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 926 transitions. [2022-07-21 16:56:28,174 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 926 transitions. Word has length 40 [2022-07-21 16:56:28,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:56:28,174 INFO L495 AbstractCegarLoop]: Abstraction has 699 states and 926 transitions. [2022-07-21 16:56:28,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 18 states have internal predecessors, (54), 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) [2022-07-21 16:56:28,174 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 926 transitions. [2022-07-21 16:56:28,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-21 16:56:28,175 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:56:28,175 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-07-21 16:56:28,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-07-21 16:56:28,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:56:28,386 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:56:28,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:56:28,387 INFO L85 PathProgramCache]: Analyzing trace with hash 306205251, now seen corresponding path program 1 times [2022-07-21 16:56:28,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:56:28,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2137973171] [2022-07-21 16:56:28,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:56:28,387 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:56:28,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:56:28,388 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) [2022-07-21 16:56:28,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-07-21 16:56:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:56:28,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-21 16:56:28,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:56:28,522 INFO L390 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 8 treesize of output 7 [2022-07-21 16:56:28,585 INFO L390 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 17 treesize of output 13 [2022-07-21 16:56:28,812 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-21 16:56:28,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 16:56:29,178 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-21 16:56:29,178 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:56:29,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2137973171] [2022-07-21 16:56:29,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2137973171] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 16:56:29,178 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 16:56:29,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2022-07-21 16:56:29,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715085007] [2022-07-21 16:56:29,178 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 16:56:29,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-21 16:56:29,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:56:29,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-21 16:56:29,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2022-07-21 16:56:29,180 INFO L87 Difference]: Start difference. First operand 699 states and 926 transitions. Second operand has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 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) [2022-07-21 16:56:30,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:56:30,229 INFO L93 Difference]: Finished difference Result 947 states and 1263 transitions. [2022-07-21 16:56:30,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 16:56:30,230 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 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 44 [2022-07-21 16:56:30,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:56:30,233 INFO L225 Difference]: With dead ends: 947 [2022-07-21 16:56:30,233 INFO L226 Difference]: Without dead ends: 947 [2022-07-21 16:56:30,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=311, Invalid=811, Unknown=0, NotChecked=0, Total=1122 [2022-07-21 16:56:30,234 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 764 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 16:56:30,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 357 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 16:56:30,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2022-07-21 16:56:30,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 858. [2022-07-21 16:56:30,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 849 states have (on average 1.3769140164899882) internal successors, (1169), 857 states have internal predecessors, (1169), 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) [2022-07-21 16:56:30,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1169 transitions. [2022-07-21 16:56:30,253 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1169 transitions. Word has length 44 [2022-07-21 16:56:30,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:56:30,253 INFO L495 AbstractCegarLoop]: Abstraction has 858 states and 1169 transitions. [2022-07-21 16:56:30,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 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) [2022-07-21 16:56:30,254 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1169 transitions. [2022-07-21 16:56:30,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-21 16:56:30,254 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:56:30,255 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:56:30,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2022-07-21 16:56:30,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:56:30,465 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:56:30,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:56:30,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1599170913, now seen corresponding path program 1 times [2022-07-21 16:56:30,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:56:30,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [793446877] [2022-07-21 16:56:30,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:56:30,466 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:56:30,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:56:30,467 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 16:56:30,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-07-21 16:56:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:56:30,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-21 16:56:30,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:56:30,614 INFO L390 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 8 treesize of output 7 [2022-07-21 16:56:30,776 INFO L390 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 17 treesize of output 13 [2022-07-21 16:56:30,963 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 16:56:30,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 16:56:31,669 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 16:56:31,670 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:56:31,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [793446877] [2022-07-21 16:56:31,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [793446877] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 16:56:31,670 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 16:56:31,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-07-21 16:56:31,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231452725] [2022-07-21 16:56:31,670 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 16:56:31,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-21 16:56:31,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:56:31,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-21 16:56:31,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2022-07-21 16:56:31,671 INFO L87 Difference]: Start difference. First operand 858 states and 1169 transitions. Second operand has 24 states, 24 states have (on average 3.0) internal successors, (72), 24 states have internal predecessors, (72), 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) [2022-07-21 16:56:33,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:56:33,544 INFO L93 Difference]: Finished difference Result 1289 states and 1744 transitions. [2022-07-21 16:56:33,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-21 16:56:33,545 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 24 states have internal predecessors, (72), 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 45 [2022-07-21 16:56:33,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:56:33,548 INFO L225 Difference]: With dead ends: 1289 [2022-07-21 16:56:33,548 INFO L226 Difference]: Without dead ends: 1289 [2022-07-21 16:56:33,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=392, Invalid=1330, Unknown=0, NotChecked=0, Total=1722 [2022-07-21 16:56:33,549 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 889 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 16:56:33,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 718 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 16:56:33,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2022-07-21 16:56:33,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 872. [2022-07-21 16:56:33,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 863 states have (on average 1.3684820393974508) internal successors, (1181), 871 states have internal predecessors, (1181), 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) [2022-07-21 16:56:33,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1181 transitions. [2022-07-21 16:56:33,560 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1181 transitions. Word has length 45 [2022-07-21 16:56:33,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:56:33,561 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 1181 transitions. [2022-07-21 16:56:33,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.0) internal successors, (72), 24 states have internal predecessors, (72), 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) [2022-07-21 16:56:33,561 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1181 transitions. [2022-07-21 16:56:33,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-21 16:56:33,562 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:56:33,562 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:56:33,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-07-21 16:56:33,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:56:33,772 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:56:33,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:56:33,773 INFO L85 PathProgramCache]: Analyzing trace with hash -484234273, now seen corresponding path program 2 times [2022-07-21 16:56:33,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:56:33,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [618236917] [2022-07-21 16:56:33,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 16:56:33,773 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:56:33,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:56:33,774 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) [2022-07-21 16:56:33,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-07-21 16:56:33,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 16:56:33,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 16:56:33,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-21 16:56:33,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:56:33,889 INFO L390 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 [2022-07-21 16:56:33,894 INFO L390 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 8 treesize of output 7 [2022-07-21 16:56:34,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:34,033 INFO L356 Elim1Store]: treesize reduction 28, result has 34.9 percent of original size [2022-07-21 16:56:34,033 INFO L390 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 2 case distinctions, treesize of input 19 treesize of output 27 [2022-07-21 16:56:34,045 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-21 16:56:34,045 INFO L390 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 11 treesize of output 11 [2022-07-21 16:56:34,238 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-21 16:56:34,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 16:56:39,272 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:41,422 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-21 16:56:41,422 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:56:41,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [618236917] [2022-07-21 16:56:41,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [618236917] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 16:56:41,422 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 16:56:41,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-07-21 16:56:41,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30007497] [2022-07-21 16:56:41,422 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 16:56:41,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 16:56:41,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:56:41,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 16:56:41,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=101, Unknown=1, NotChecked=0, Total=132 [2022-07-21 16:56:41,423 INFO L87 Difference]: Start difference. First operand 872 states and 1181 transitions. Second operand has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 12 states have internal predecessors, (56), 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) [2022-07-21 16:56:41,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:56:41,869 INFO L93 Difference]: Finished difference Result 884 states and 1181 transitions. [2022-07-21 16:56:41,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 16:56:41,870 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 12 states have internal predecessors, (56), 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 45 [2022-07-21 16:56:41,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:56:41,872 INFO L225 Difference]: With dead ends: 884 [2022-07-21 16:56:41,872 INFO L226 Difference]: Without dead ends: 884 [2022-07-21 16:56:41,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=50, Invalid=159, Unknown=1, NotChecked=0, Total=210 [2022-07-21 16:56:41,873 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 74 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 104 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 16:56:41,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 123 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 104 Unchecked, 0.2s Time] [2022-07-21 16:56:41,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2022-07-21 16:56:41,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 872. [2022-07-21 16:56:41,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 863 states have (on average 1.354577056778679) internal successors, (1169), 871 states have internal predecessors, (1169), 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) [2022-07-21 16:56:41,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1169 transitions. [2022-07-21 16:56:41,884 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1169 transitions. Word has length 45 [2022-07-21 16:56:41,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:56:41,884 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 1169 transitions. [2022-07-21 16:56:41,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 12 states have internal predecessors, (56), 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) [2022-07-21 16:56:41,884 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1169 transitions. [2022-07-21 16:56:41,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-21 16:56:41,885 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:56:41,885 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:56:41,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-07-21 16:56:42,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:56:42,094 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:56:42,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:56:42,095 INFO L85 PathProgramCache]: Analyzing trace with hash -2126360568, now seen corresponding path program 1 times [2022-07-21 16:56:42,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:56:42,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315911636] [2022-07-21 16:56:42,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:56:42,095 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:56:42,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:56:42,096 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 16:56:42,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-07-21 16:56:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:56:42,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 16:56:42,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:56:42,442 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 16:56:42,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 16:56:42,666 INFO L390 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 25 treesize of output 21 [2022-07-21 16:56:43,071 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 16:56:43,071 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:56:43,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315911636] [2022-07-21 16:56:43,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1315911636] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 16:56:43,072 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 16:56:43,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-07-21 16:56:43,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083633120] [2022-07-21 16:56:43,072 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 16:56:43,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 16:56:43,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:56:43,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 16:56:43,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-07-21 16:56:43,073 INFO L87 Difference]: Start difference. First operand 872 states and 1169 transitions. Second operand has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 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) [2022-07-21 16:56:44,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:56:44,099 INFO L93 Difference]: Finished difference Result 1105 states and 1421 transitions. [2022-07-21 16:56:44,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 16:56:44,101 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 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 46 [2022-07-21 16:56:44,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:56:44,103 INFO L225 Difference]: With dead ends: 1105 [2022-07-21 16:56:44,103 INFO L226 Difference]: Without dead ends: 1105 [2022-07-21 16:56:44,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=170, Invalid=336, Unknown=0, NotChecked=0, Total=506 [2022-07-21 16:56:44,104 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 577 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 16:56:44,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 149 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 16:56:44,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2022-07-21 16:56:44,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 872. [2022-07-21 16:56:44,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 863 states have (on average 1.320973348783314) internal successors, (1140), 871 states have internal predecessors, (1140), 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) [2022-07-21 16:56:44,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1140 transitions. [2022-07-21 16:56:44,114 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1140 transitions. Word has length 46 [2022-07-21 16:56:44,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:56:44,114 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 1140 transitions. [2022-07-21 16:56:44,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 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) [2022-07-21 16:56:44,114 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1140 transitions. [2022-07-21 16:56:44,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-21 16:56:44,115 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:56:44,115 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:56:44,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2022-07-21 16:56:44,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:56:44,326 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:56:44,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:56:44,326 INFO L85 PathProgramCache]: Analyzing trace with hash -326352172, now seen corresponding path program 1 times [2022-07-21 16:56:44,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:56:44,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1307539596] [2022-07-21 16:56:44,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:56:44,327 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:56:44,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:56:44,328 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) [2022-07-21 16:56:44,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-07-21 16:56:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:56:44,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-21 16:56:44,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:56:44,580 INFO L356 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-07-21 16:56:44,581 INFO L390 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 1 case distinctions, treesize of input 11 treesize of output 17 [2022-07-21 16:56:45,231 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 16:56:45,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 16:56:46,062 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 16:56:46,063 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:56:46,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1307539596] [2022-07-21 16:56:46,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1307539596] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 16:56:46,063 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 16:56:46,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2022-07-21 16:56:46,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428578021] [2022-07-21 16:56:46,063 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 16:56:46,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 16:56:46,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:56:46,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 16:56:46,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-21 16:56:46,064 INFO L87 Difference]: Start difference. First operand 872 states and 1140 transitions. Second operand has 11 states, 10 states have (on average 7.2) internal successors, (72), 11 states have internal predecessors, (72), 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) [2022-07-21 16:56:46,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:56:46,491 INFO L93 Difference]: Finished difference Result 872 states and 1137 transitions. [2022-07-21 16:56:46,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 16:56:46,493 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.2) internal successors, (72), 11 states have internal predecessors, (72), 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 46 [2022-07-21 16:56:46,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:56:46,496 INFO L225 Difference]: With dead ends: 872 [2022-07-21 16:56:46,496 INFO L226 Difference]: Without dead ends: 872 [2022-07-21 16:56:46,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-07-21 16:56:46,497 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 39 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 16:56:46,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 139 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 34 Unchecked, 0.4s Time] [2022-07-21 16:56:46,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2022-07-21 16:56:46,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 872. [2022-07-21 16:56:46,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 863 states have (on average 1.3174971031286211) internal successors, (1137), 871 states have internal predecessors, (1137), 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) [2022-07-21 16:56:46,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1137 transitions. [2022-07-21 16:56:46,508 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1137 transitions. Word has length 46 [2022-07-21 16:56:46,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:56:46,509 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 1137 transitions. [2022-07-21 16:56:46,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.2) internal successors, (72), 11 states have internal predecessors, (72), 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) [2022-07-21 16:56:46,509 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1137 transitions. [2022-07-21 16:56:46,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-21 16:56:46,510 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:56:46,510 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 16:56:46,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-07-21 16:56:46,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:56:46,722 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:56:46,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:56:46,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1349955383, now seen corresponding path program 1 times [2022-07-21 16:56:46,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:56:46,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2085981823] [2022-07-21 16:56:46,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:56:46,723 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:56:46,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:56:46,725 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) [2022-07-21 16:56:46,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-07-21 16:56:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:56:47,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-21 16:56:47,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:56:53,871 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-21 16:56:53,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 16:56:53,872 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:56:53,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2085981823] [2022-07-21 16:56:53,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2085981823] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:56:53,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:56:53,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 16:56:53,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870306209] [2022-07-21 16:56:53,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:56:53,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 16:56:53,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:56:53,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 16:56:53,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=27, Unknown=2, NotChecked=0, Total=42 [2022-07-21 16:56:53,873 INFO L87 Difference]: Start difference. First operand 872 states and 1137 transitions. Second operand has 7 states, 6 states have (on average 6.5) internal successors, (39), 7 states have internal predecessors, (39), 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) [2022-07-21 16:56:53,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:56:53,878 INFO L93 Difference]: Finished difference Result 1104 states and 1443 transitions. [2022-07-21 16:56:53,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 16:56:53,879 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.5) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-07-21 16:56:53,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:56:53,882 INFO L225 Difference]: With dead ends: 1104 [2022-07-21 16:56:53,882 INFO L226 Difference]: Without dead ends: 1082 [2022-07-21 16:56:53,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=13, Invalid=27, Unknown=2, NotChecked=0, Total=42 [2022-07-21 16:56:53,883 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 16:56:53,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 212 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 41 Unchecked, 0.0s Time] [2022-07-21 16:56:53,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2022-07-21 16:56:53,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 1007. [2022-07-21 16:56:53,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1007 states, 998 states have (on average 1.3356713426853708) internal successors, (1333), 1006 states have internal predecessors, (1333), 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) [2022-07-21 16:56:53,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1333 transitions. [2022-07-21 16:56:53,894 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1333 transitions. Word has length 50 [2022-07-21 16:56:53,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:56:53,895 INFO L495 AbstractCegarLoop]: Abstraction has 1007 states and 1333 transitions. [2022-07-21 16:56:53,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.5) internal successors, (39), 7 states have internal predecessors, (39), 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) [2022-07-21 16:56:53,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1333 transitions. [2022-07-21 16:56:53,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-21 16:56:53,896 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:56:53,896 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:56:53,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-07-21 16:56:54,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:56:54,108 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:56:54,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:56:54,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1278180873, now seen corresponding path program 3 times [2022-07-21 16:56:54,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:56:54,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1908227467] [2022-07-21 16:56:54,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 16:56:54,109 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:56:54,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:56:54,110 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 16:56:54,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-07-21 16:56:54,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-21 16:56:54,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 16:56:54,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 16:56:54,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:56:54,440 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-21 16:56:54,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 16:56:54,665 INFO L390 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 11 treesize of output 9 [2022-07-21 16:56:55,087 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-21 16:56:55,087 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 16:56:55,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1908227467] [2022-07-21 16:56:55,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1908227467] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 16:56:55,088 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 16:56:55,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-07-21 16:56:55,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484748396] [2022-07-21 16:56:55,089 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 16:56:55,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 16:56:55,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 16:56:55,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 16:56:55,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-07-21 16:56:55,090 INFO L87 Difference]: Start difference. First operand 1007 states and 1333 transitions. Second operand has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 12 states have internal predecessors, (69), 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) [2022-07-21 16:56:56,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:56:56,161 INFO L93 Difference]: Finished difference Result 1349 states and 1730 transitions. [2022-07-21 16:56:56,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 16:56:56,162 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 12 states have internal predecessors, (69), 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 52 [2022-07-21 16:56:56,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:56:56,165 INFO L225 Difference]: With dead ends: 1349 [2022-07-21 16:56:56,165 INFO L226 Difference]: Without dead ends: 1349 [2022-07-21 16:56:56,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2022-07-21 16:56:56,166 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 541 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 16:56:56,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 158 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 16:56:56,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2022-07-21 16:56:56,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1006. [2022-07-21 16:56:56,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 998 states have (on average 1.2895791583166332) internal successors, (1287), 1005 states have internal predecessors, (1287), 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) [2022-07-21 16:56:56,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1287 transitions. [2022-07-21 16:56:56,176 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1287 transitions. Word has length 52 [2022-07-21 16:56:56,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:56:56,177 INFO L495 AbstractCegarLoop]: Abstraction has 1006 states and 1287 transitions. [2022-07-21 16:56:56,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 12 states have internal predecessors, (69), 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) [2022-07-21 16:56:56,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1287 transitions. [2022-07-21 16:56:56,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-21 16:56:56,178 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:56:56,178 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 16:56:56,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2022-07-21 16:56:56,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 16:56:56,379 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-07-21 16:56:56,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:56:56,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1986422419, now seen corresponding path program 1 times [2022-07-21 16:56:56,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 16:56:56,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [449672048] [2022-07-21 16:56:56,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:56:56,380 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 16:56:56,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 16:56:56,381 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) [2022-07-21 16:56:56,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-07-21 16:56:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:56:56,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 34 conjunts are in the unsatisfiable core [2022-07-21 16:56:56,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:56:56,650 INFO L390 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 11 treesize of output 9 [2022-07-21 16:56:56,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,688 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:56,689 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:56,690 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 52 [2022-07-21 16:56:56,740 INFO L390 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 58 treesize of output 54 [2022-07-21 16:56:56,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:56,888 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:56,888 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:56,890 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 30 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 91 [2022-07-21 16:56:56,968 INFO L390 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 85 treesize of output 73 [2022-07-21 16:56:57,452 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 16:56:57,452 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 115 treesize of output 51 [2022-07-21 16:56:57,535 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 16:56:57,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 16:56:58,055 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1427 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1427) |c_ULTIMATE.start_lis_~best~0#1.base|))) (bvslt (concat (concat (concat (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32))) (select .cse0 (bvadd (_ bv6 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)))) (select .cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (bvadd (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) |c_ULTIMATE.start_lis_~best~0#1.offset|)) (select .cse0 (bvadd (_ bv2 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (select .cse0 |c_ULTIMATE.start_lis_~best~0#1.offset|)) (_ bv1 32))))) is different from false [2022-07-21 16:56:58,089 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1427 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base| (let ((.cse1 (bvmul (_ bv4 32) |c_ULTIMATE.start_lis_~i~0#1|))) (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base|) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| .cse1) ((_ extract 7 0) (_ bv1 32))) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| .cse1 (_ bv1 32)) ((_ extract 15 8) (_ bv1 32))) (bvadd (_ bv2 32) |c_ULTIMATE.start_lis_~best~0#1.offset| .cse1) ((_ extract 23 16) (_ bv1 32))) (bvadd (_ bv3 32) |c_ULTIMATE.start_lis_~best~0#1.offset| .cse1) ((_ extract 31 24) (_ bv1 32))))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1427) |c_ULTIMATE.start_lis_~best~0#1.base|))) (bvslt (concat (concat (concat (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32))) (select .cse0 (bvadd (_ bv6 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)))) (select .cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (bvadd (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) |c_ULTIMATE.start_lis_~best~0#1.offset|)) (select .cse0 (bvadd (_ bv2 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (select .cse0 |c_ULTIMATE.start_lis_~best~0#1.offset|)) (_ bv1 32))))) is different from false [2022-07-21 16:56:58,141 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1427 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base| (let ((.cse1 (bvmul (_ bv4 32) |c_ULTIMATE.start_lis_~i~0#1|))) (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_lis_~best~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_lis_~best~0#1.offset| .cse1) ((_ extract 7 0) (_ bv1 32))) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| .cse1 (_ bv5 32)) ((_ extract 15 8) (_ bv1 32))) (bvadd (_ bv6 32) |c_ULTIMATE.start_lis_~best~0#1.offset| .cse1) ((_ extract 23 16) (_ bv1 32))) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32) .cse1) ((_ extract 31 24) (_ bv1 32))))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1427) |c_ULTIMATE.start_lis_~best~0#1.base|))) (bvslt (concat (concat (concat (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32))) (select .cse0 (bvadd (_ bv6 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)))) (select .cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (bvadd (_ bv1 32) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) |c_ULTIMATE.start_lis_~best~0#1.offset|)) (select .cse0 (bvadd (_ bv2 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (select .cse0 |c_ULTIMATE.start_lis_~best~0#1.offset|)))))) is different from false [2022-07-21 16:56:58,174 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1421 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1427 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (select (store (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1421))) (store .cse1 |c_ULTIMATE.start_lis_~best~0#1.base| (let ((.cse2 (bvmul (_ bv4 32) |c_ULTIMATE.start_lis_~i~0#1|))) (store (store (store (store (select .cse1 |c_ULTIMATE.start_lis_~best~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_lis_~best~0#1.offset| .cse2) ((_ extract 7 0) (_ bv1 32))) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| .cse2 (_ bv5 32)) ((_ extract 15 8) (_ bv1 32))) (bvadd (_ bv6 32) |c_ULTIMATE.start_lis_~best~0#1.offset| .cse2) ((_ extract 23 16) (_ bv1 32))) (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32) .cse2) ((_ extract 31 24) (_ bv1 32)))))) |c_ULTIMATE.start_lis_~prev~0#1.base| v_ArrVal_1427) |c_ULTIMATE.start_lis_~best~0#1.base|))) (bvslt (concat (concat (concat (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv7 32))) (select .cse0 (bvadd (_ bv6 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv5 32)))) (select .cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (bvadd (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) |c_ULTIMATE.start_lis_~best~0#1.offset|)) (select .cse0 (bvadd (_ bv2 32) |c_ULTIMATE.start_lis_~best~0#1.offset|))) (select .cse0 (bvadd |c_ULTIMATE.start_lis_~best~0#1.offset| (_ bv1 32)))) (select .cse0 |c_ULTIMATE.start_lis_~best~0#1.offset|)) (_ bv1 32))))) is different from false [2022-07-21 16:56:58,201 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,201 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,202 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:58,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:56:58,371 INFO L356 Elim1Store]: treesize reduction 303, result has 14.6 percent of original size [2022-07-21 16:56:58,371 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 1103 treesize of output 515 [2022-07-21 16:56:58,383 INFO L390 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 861 treesize of output 837 [2022-07-21 16:56:58,416 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,417 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,417 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,418 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,432 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,433 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,433 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,434 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,448 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,449 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,449 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,450 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,494 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,495 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,495 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,497 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,508 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,508 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,510 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,511 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,521 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,524 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,525 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,530 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,570 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,571 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,571 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,572 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,572 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,572 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,573 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,573 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,574 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,574 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,575 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,575 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,576 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,576 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,577 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,577 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,578 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,578 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,579 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,579 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,579 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,580 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,580 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,581 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,581 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,582 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,582 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,583 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,589 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 15393 treesize of output 11553 [2022-07-21 16:56:58,688 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,694 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,694 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,695 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,695 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,696 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,696 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,696 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,697 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,697 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,698 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,698 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,699 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,699 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,700 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,700 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,700 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,701 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,701 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,703 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,703 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,703 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,704 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,704 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,705 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,705 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,709 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 11951 treesize of output 11891 [2022-07-21 16:56:58,817 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,818 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,818 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,819 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,828 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,829 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,830 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,830 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,839 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,840 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,841 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,842 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,859 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,860 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,861 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,865 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,874 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,875 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,878 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,879 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,887 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,893 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,899 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,900 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,955 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,956 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,956 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,957 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,957 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,966 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,967 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,967 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,975 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,976 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,977 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,978 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,978 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,979 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,979 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,980 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,989 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,990 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,991 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,992 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,992 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:58,993 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:59,009 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:59,010 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:59,010 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:59,011 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:59,011 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:59,012 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:59,012 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:59,012 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:59,023 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:59,023 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:59,024 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:59,024 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:59,025 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:59,025 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:59,026 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:59,027 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:59,035 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:59,035 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:59,036 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:59,036 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:59,037 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:59,045 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:59,045 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:59,046 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:59,046 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:59,047 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:59,047 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:59,048 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:59,048 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:59,049 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:59,049 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:59,050 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:59,050 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:59,051 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:59,052 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:59,052 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 16:56:59,338 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 16:56:59,339 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 58 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 8 case distinctions, treesize of input 15408 treesize of output 11657