./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext3-properties/sll_length_check-2.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/list-ext3-properties/sll_length_check-2.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 0b1cf2dd5b4da09460afcca66f285dbd0591f4fa3369eb070fcfcc2c1d99d315 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 17:54:24,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 17:54:24,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 17:54:24,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 17:54:24,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 17:54:24,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 17:54:24,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 17:54:24,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 17:54:24,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 17:54:24,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 17:54:24,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 17:54:24,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 17:54:24,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 17:54:24,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 17:54:24,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 17:54:24,516 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 17:54:24,517 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 17:54:24,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 17:54:24,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 17:54:24,523 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 17:54:24,524 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 17:54:24,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 17:54:24,526 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 17:54:24,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 17:54:24,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 17:54:24,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 17:54:24,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 17:54:24,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 17:54:24,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 17:54:24,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 17:54:24,535 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 17:54:24,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 17:54:24,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 17:54:24,537 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 17:54:24,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 17:54:24,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 17:54:24,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 17:54:24,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 17:54:24,539 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 17:54:24,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 17:54:24,540 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 17:54:24,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 17:54:24,545 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-21 17:54:24,568 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 17:54:24,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 17:54:24,569 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 17:54:24,569 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 17:54:24,570 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 17:54:24,570 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 17:54:24,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 17:54:24,571 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 17:54:24,571 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 17:54:24,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 17:54:24,572 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 17:54:24,572 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-21 17:54:24,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 17:54:24,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 17:54:24,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 17:54:24,573 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-21 17:54:24,573 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-21 17:54:24,573 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-21 17:54:24,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 17:54:24,573 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 17:54:24,573 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 17:54:24,574 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 17:54:24,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 17:54:24,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 17:54:24,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 17:54:24,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 17:54:24,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 17:54:24,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 17:54:24,575 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 17:54:24,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 17:54:24,575 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b1cf2dd5b4da09460afcca66f285dbd0591f4fa3369eb070fcfcc2c1d99d315 [2022-07-21 17:54:24,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 17:54:24,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 17:54:24,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 17:54:24,875 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 17:54:24,876 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 17:54:24,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext3-properties/sll_length_check-2.i [2022-07-21 17:54:24,931 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/761815936/f1003bab1c874b56bc68d5b486f439c6/FLAG6a523c585 [2022-07-21 17:54:25,316 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 17:54:25,319 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_length_check-2.i [2022-07-21 17:54:25,333 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/761815936/f1003bab1c874b56bc68d5b486f439c6/FLAG6a523c585 [2022-07-21 17:54:25,345 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/761815936/f1003bab1c874b56bc68d5b486f439c6 [2022-07-21 17:54:25,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 17:54:25,347 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 17:54:25,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 17:54:25,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 17:54:25,352 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 17:54:25,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:54:25" (1/1) ... [2022-07-21 17:54:25,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33e66b73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:54:25, skipping insertion in model container [2022-07-21 17:54:25,353 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:54:25" (1/1) ... [2022-07-21 17:54:25,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 17:54:25,387 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 17:54:25,625 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_length_check-2.i[23814,23827] [2022-07-21 17:54:25,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 17:54:25,632 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 17:54:25,670 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_length_check-2.i[23814,23827] [2022-07-21 17:54:25,671 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 17:54:25,691 INFO L208 MainTranslator]: Completed translation [2022-07-21 17:54:25,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:54:25 WrapperNode [2022-07-21 17:54:25,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 17:54:25,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 17:54:25,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 17:54:25,694 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 17:54:25,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:54:25" (1/1) ... [2022-07-21 17:54:25,724 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:54:25" (1/1) ... [2022-07-21 17:54:25,737 INFO L137 Inliner]: procedures = 125, calls = 15, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 90 [2022-07-21 17:54:25,738 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 17:54:25,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 17:54:25,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 17:54:25,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 17:54:25,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:54:25" (1/1) ... [2022-07-21 17:54:25,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:54:25" (1/1) ... [2022-07-21 17:54:25,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:54:25" (1/1) ... [2022-07-21 17:54:25,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:54:25" (1/1) ... [2022-07-21 17:54:25,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:54:25" (1/1) ... [2022-07-21 17:54:25,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:54:25" (1/1) ... [2022-07-21 17:54:25,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:54:25" (1/1) ... [2022-07-21 17:54:25,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 17:54:25,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 17:54:25,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 17:54:25,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 17:54:25,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:54:25" (1/1) ... [2022-07-21 17:54:25,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 17:54:25,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 17:54:25,819 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 17:54:25,835 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 17:54:25,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 17:54:25,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 17:54:25,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 17:54:25,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 17:54:25,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 17:54:25,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 17:54:25,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 17:54:25,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 17:54:25,970 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 17:54:25,971 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 17:54:26,159 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 17:54:26,166 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 17:54:26,167 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-21 17:54:26,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:54:26 BoogieIcfgContainer [2022-07-21 17:54:26,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 17:54:26,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 17:54:26,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 17:54:26,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 17:54:26,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:54:25" (1/3) ... [2022-07-21 17:54:26,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dbec370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:54:26, skipping insertion in model container [2022-07-21 17:54:26,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:54:25" (2/3) ... [2022-07-21 17:54:26,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dbec370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:54:26, skipping insertion in model container [2022-07-21 17:54:26,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:54:26" (3/3) ... [2022-07-21 17:54:26,175 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_length_check-2.i [2022-07-21 17:54:26,185 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 17:54:26,186 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-07-21 17:54:26,224 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 17:54:26,231 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@4f67269d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@175b9177 [2022-07-21 17:54:26,232 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-07-21 17:54:26,235 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 40 states have internal predecessors, (51), 0 states have call successors, (0), 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 17:54:26,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-21 17:54:26,239 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:54:26,239 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:54:26,240 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-07-21 17:54:26,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:54:26,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1819225437, now seen corresponding path program 1 times [2022-07-21 17:54:26,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:54:26,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803399215] [2022-07-21 17:54:26,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:54:26,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:54:26,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:54:26,349 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 17:54:26,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:54:26,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803399215] [2022-07-21 17:54:26,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803399215] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:54:26,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:54:26,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 17:54:26,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30652544] [2022-07-21 17:54:26,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:54:26,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 17:54:26,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:54:26,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 17:54:26,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 17:54:26,381 INFO L87 Difference]: Start difference. First operand has 41 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 40 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:54:26,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:54:26,392 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2022-07-21 17:54:26,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 17:54:26,395 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-21 17:54:26,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:54:26,400 INFO L225 Difference]: With dead ends: 41 [2022-07-21 17:54:26,400 INFO L226 Difference]: Without dead ends: 38 [2022-07-21 17:54:26,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 17:54:26,406 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:54:26,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:54:26,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-07-21 17:54:26,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-07-21 17:54:26,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:54:26,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2022-07-21 17:54:26,440 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 7 [2022-07-21 17:54:26,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:54:26,443 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2022-07-21 17:54:26,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:54:26,444 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2022-07-21 17:54:26,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-21 17:54:26,445 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:54:26,445 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:54:26,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 17:54:26,446 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-07-21 17:54:26,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:54:26,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1213452566, now seen corresponding path program 1 times [2022-07-21 17:54:26,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:54:26,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670652997] [2022-07-21 17:54:26,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:54:26,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:54:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:54:26,511 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 17:54:26,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:54:26,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670652997] [2022-07-21 17:54:26,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670652997] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:54:26,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:54:26,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 17:54:26,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459706330] [2022-07-21 17:54:26,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:54:26,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 17:54:26,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:54:26,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 17:54:26,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 17:54:26,515 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:54:26,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:54:26,545 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2022-07-21 17:54:26,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 17:54:26,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-21 17:54:26,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:54:26,546 INFO L225 Difference]: With dead ends: 64 [2022-07-21 17:54:26,547 INFO L226 Difference]: Without dead ends: 64 [2022-07-21 17:54:26,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 17:54:26,549 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 30 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:54:26,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 84 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:54:26,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-07-21 17:54:26,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 37. [2022-07-21 17:54:26,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 36 states have internal predecessors, (41), 0 states have call successors, (0), 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 17:54:26,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2022-07-21 17:54:26,556 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 9 [2022-07-21 17:54:26,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:54:26,556 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2022-07-21 17:54:26,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:54:26,557 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2022-07-21 17:54:26,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-21 17:54:26,559 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:54:26,560 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:54:26,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 17:54:26,560 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-07-21 17:54:26,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:54:26,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1213452567, now seen corresponding path program 1 times [2022-07-21 17:54:26,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:54:26,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303383604] [2022-07-21 17:54:26,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:54:26,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:54:26,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:54:26,621 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 17:54:26,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:54:26,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303383604] [2022-07-21 17:54:26,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303383604] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:54:26,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:54:26,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 17:54:26,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198742598] [2022-07-21 17:54:26,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:54:26,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 17:54:26,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:54:26,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 17:54:26,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 17:54:26,624 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:54:26,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:54:26,668 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2022-07-21 17:54:26,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 17:54:26,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-21 17:54:26,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:54:26,669 INFO L225 Difference]: With dead ends: 63 [2022-07-21 17:54:26,669 INFO L226 Difference]: Without dead ends: 63 [2022-07-21 17:54:26,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 17:54:26,670 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 30 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:54:26,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 91 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:54:26,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-07-21 17:54:26,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 36. [2022-07-21 17:54:26,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 35 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 17:54:26,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2022-07-21 17:54:26,673 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 9 [2022-07-21 17:54:26,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:54:26,673 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2022-07-21 17:54:26,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:54:26,673 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2022-07-21 17:54:26,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-21 17:54:26,674 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:54:26,674 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:54:26,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 17:54:26,674 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-07-21 17:54:26,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:54:26,674 INFO L85 PathProgramCache]: Analyzing trace with hash -2104757995, now seen corresponding path program 1 times [2022-07-21 17:54:26,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:54:26,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412882143] [2022-07-21 17:54:26,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:54:26,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:54:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:54:26,734 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 17:54:26,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:54:26,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412882143] [2022-07-21 17:54:26,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412882143] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:54:26,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:54:26,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 17:54:26,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049426724] [2022-07-21 17:54:26,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:54:26,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 17:54:26,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:54:26,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 17:54:26,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 17:54:26,736 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:54:26,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:54:26,783 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2022-07-21 17:54:26,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 17:54:26,783 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-21 17:54:26,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:54:26,784 INFO L225 Difference]: With dead ends: 74 [2022-07-21 17:54:26,784 INFO L226 Difference]: Without dead ends: 74 [2022-07-21 17:54:26,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 17:54:26,785 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 40 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:54:26,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 156 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:54:26,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-07-21 17:54:26,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 41. [2022-07-21 17:54:26,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 32 states have (on average 1.46875) internal successors, (47), 40 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 17:54:26,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2022-07-21 17:54:26,790 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 11 [2022-07-21 17:54:26,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:54:26,790 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2022-07-21 17:54:26,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:54:26,790 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2022-07-21 17:54:26,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-21 17:54:26,790 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:54:26,791 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:54:26,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 17:54:26,791 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-07-21 17:54:26,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:54:26,791 INFO L85 PathProgramCache]: Analyzing trace with hash -48409076, now seen corresponding path program 1 times [2022-07-21 17:54:26,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:54:26,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211077414] [2022-07-21 17:54:26,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:54:26,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:54:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:54:26,847 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 17:54:26,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:54:26,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211077414] [2022-07-21 17:54:26,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211077414] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:54:26,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:54:26,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 17:54:26,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633050081] [2022-07-21 17:54:26,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:54:26,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 17:54:26,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:54:26,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 17:54:26,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:54:26,850 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 5 states, 5 states have (on average 2.4) 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 17:54:26,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:54:26,883 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2022-07-21 17:54:26,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 17:54:26,883 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) 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 14 [2022-07-21 17:54:26,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:54:26,884 INFO L225 Difference]: With dead ends: 67 [2022-07-21 17:54:26,884 INFO L226 Difference]: Without dead ends: 67 [2022-07-21 17:54:26,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:54:26,885 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 85 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:54:26,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 120 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:54:26,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-07-21 17:54:26,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 45. [2022-07-21 17:54:26,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 44 states have internal predecessors, (52), 0 states have call successors, (0), 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 17:54:26,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2022-07-21 17:54:26,890 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 14 [2022-07-21 17:54:26,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:54:26,890 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2022-07-21 17:54:26,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) 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 17:54:26,890 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2022-07-21 17:54:26,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-21 17:54:26,891 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:54:26,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:54:26,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 17:54:26,891 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-07-21 17:54:26,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:54:26,892 INFO L85 PathProgramCache]: Analyzing trace with hash 347063660, now seen corresponding path program 1 times [2022-07-21 17:54:26,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:54:26,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854911998] [2022-07-21 17:54:26,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:54:26,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:54:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:54:26,928 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 17:54:26,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:54:26,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854911998] [2022-07-21 17:54:26,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854911998] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 17:54:26,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408270581] [2022-07-21 17:54:26,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:54:26,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:54:26,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 17:54:26,931 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 17:54:26,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 17:54:26,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:54:26,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 17:54:26,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:54:27,034 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 17:54:27,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 17:54:27,060 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 17:54:27,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408270581] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 17:54:27,061 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 17:54:27,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-07-21 17:54:27,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806327932] [2022-07-21 17:54:27,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 17:54:27,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 17:54:27,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:54:27,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 17:54:27,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:54:27,063 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 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 17:54:27,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:54:27,133 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2022-07-21 17:54:27,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 17:54:27,135 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 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 17:54:27,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:54:27,136 INFO L225 Difference]: With dead ends: 80 [2022-07-21 17:54:27,136 INFO L226 Difference]: Without dead ends: 80 [2022-07-21 17:54:27,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-07-21 17:54:27,137 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 86 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:54:27,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 102 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:54:27,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-07-21 17:54:27,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 41. [2022-07-21 17:54:27,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 32 states have (on average 1.40625) internal successors, (45), 40 states have internal predecessors, (45), 0 states have call successors, (0), 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 17:54:27,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2022-07-21 17:54:27,141 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 15 [2022-07-21 17:54:27,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:54:27,141 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2022-07-21 17:54:27,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 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 17:54:27,142 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2022-07-21 17:54:27,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-21 17:54:27,142 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:54:27,142 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:54:27,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 17:54:27,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-21 17:54:27,362 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-07-21 17:54:27,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:54:27,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1919707581, now seen corresponding path program 2 times [2022-07-21 17:54:27,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:54:27,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624714589] [2022-07-21 17:54:27,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:54:27,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:54:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:54:27,461 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 17:54:27,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:54:27,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624714589] [2022-07-21 17:54:27,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624714589] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:54:27,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:54:27,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 17:54:27,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669276471] [2022-07-21 17:54:27,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:54:27,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 17:54:27,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:54:27,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 17:54:27,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:54:27,466 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 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 17:54:27,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:54:27,531 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2022-07-21 17:54:27,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 17:54:27,532 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 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 19 [2022-07-21 17:54:27,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:54:27,532 INFO L225 Difference]: With dead ends: 77 [2022-07-21 17:54:27,532 INFO L226 Difference]: Without dead ends: 77 [2022-07-21 17:54:27,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:54:27,533 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 169 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:54:27,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 89 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:54:27,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-07-21 17:54:27,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 43. [2022-07-21 17:54:27,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 42 states have internal predecessors, (49), 0 states have call successors, (0), 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 17:54:27,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2022-07-21 17:54:27,536 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 19 [2022-07-21 17:54:27,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:54:27,537 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2022-07-21 17:54:27,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 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 17:54:27,537 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2022-07-21 17:54:27,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-21 17:54:27,537 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:54:27,538 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:54:27,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 17:54:27,538 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-07-21 17:54:27,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:54:27,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1919707580, now seen corresponding path program 1 times [2022-07-21 17:54:27,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:54:27,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268371243] [2022-07-21 17:54:27,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:54:27,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:54:27,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:54:27,606 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 17:54:27,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:54:27,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268371243] [2022-07-21 17:54:27,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268371243] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:54:27,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:54:27,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 17:54:27,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904937899] [2022-07-21 17:54:27,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:54:27,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 17:54:27,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:54:27,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 17:54:27,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:54:27,609 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 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 17:54:27,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:54:27,673 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2022-07-21 17:54:27,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 17:54:27,674 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 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 19 [2022-07-21 17:54:27,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:54:27,674 INFO L225 Difference]: With dead ends: 63 [2022-07-21 17:54:27,674 INFO L226 Difference]: Without dead ends: 63 [2022-07-21 17:54:27,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:54:27,675 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 174 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:54:27,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 73 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:54:27,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-07-21 17:54:27,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 43. [2022-07-21 17:54:27,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 34 states have (on average 1.411764705882353) internal successors, (48), 42 states have internal predecessors, (48), 0 states have call successors, (0), 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 17:54:27,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2022-07-21 17:54:27,690 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 19 [2022-07-21 17:54:27,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:54:27,691 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2022-07-21 17:54:27,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 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 17:54:27,691 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2022-07-21 17:54:27,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-21 17:54:27,691 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:54:27,692 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:54:27,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 17:54:27,692 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-07-21 17:54:27,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:54:27,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1774366323, now seen corresponding path program 1 times [2022-07-21 17:54:27,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:54:27,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346975501] [2022-07-21 17:54:27,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:54:27,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:54:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:54:27,766 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 17:54:27,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:54:27,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346975501] [2022-07-21 17:54:27,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346975501] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:54:27,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:54:27,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 17:54:27,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898059269] [2022-07-21 17:54:27,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:54:27,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 17:54:27,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:54:27,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 17:54:27,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:54:27,768 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 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 17:54:27,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:54:27,805 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2022-07-21 17:54:27,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 17:54:27,805 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2022-07-21 17:54:27,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:54:27,806 INFO L225 Difference]: With dead ends: 44 [2022-07-21 17:54:27,806 INFO L226 Difference]: Without dead ends: 44 [2022-07-21 17:54:27,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:54:27,807 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 96 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:54:27,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 89 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:54:27,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-07-21 17:54:27,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2022-07-21 17:54:27,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 42 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 17:54:27,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2022-07-21 17:54:27,809 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 22 [2022-07-21 17:54:27,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:54:27,810 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2022-07-21 17:54:27,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 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 17:54:27,810 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2022-07-21 17:54:27,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-21 17:54:27,810 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:54:27,810 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:54:27,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 17:54:27,811 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-07-21 17:54:27,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:54:27,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1775998621, now seen corresponding path program 1 times [2022-07-21 17:54:27,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:54:27,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893182815] [2022-07-21 17:54:27,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:54:27,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:54:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:54:27,912 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:54:27,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:54:27,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893182815] [2022-07-21 17:54:27,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893182815] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 17:54:27,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175151412] [2022-07-21 17:54:27,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:54:27,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:54:27,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 17:54:27,914 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 17:54:27,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 17:54:27,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:54:27,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 33 conjunts are in the unsatisfiable core [2022-07-21 17:54:27,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:54:27,991 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 17:54:28,011 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 17:54:28,025 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-21 17:54:28,025 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 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-21 17:54:28,052 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-21 17:54:28,138 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 17:54:28,139 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-07-21 17:54:28,143 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-21 17:54:28,148 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:54:28,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 17:54:28,312 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 12 treesize of output 10 [2022-07-21 17:54:28,316 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 22 treesize of output 20 [2022-07-21 17:54:28,499 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:54:28,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175151412] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 17:54:28,499 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 17:54:28,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2022-07-21 17:54:28,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495649046] [2022-07-21 17:54:28,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 17:54:28,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-21 17:54:28,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:54:28,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-21 17:54:28,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-07-21 17:54:28,501 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 23 states, 22 states have (on average 2.0) internal successors, (44), 23 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 17:54:28,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:54:28,913 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2022-07-21 17:54:28,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 17:54:28,914 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.0) internal successors, (44), 23 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 22 [2022-07-21 17:54:28,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:54:28,914 INFO L225 Difference]: With dead ends: 83 [2022-07-21 17:54:28,914 INFO L226 Difference]: Without dead ends: 83 [2022-07-21 17:54:28,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=232, Invalid=890, Unknown=0, NotChecked=0, Total=1122 [2022-07-21 17:54:28,915 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 442 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 168 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:54:28,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 314 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 254 Invalid, 0 Unknown, 168 Unchecked, 0.1s Time] [2022-07-21 17:54:28,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-07-21 17:54:28,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 46. [2022-07-21 17:54:28,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 45 states have internal predecessors, (52), 0 states have call successors, (0), 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 17:54:28,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2022-07-21 17:54:28,918 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 22 [2022-07-21 17:54:28,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:54:28,918 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2022-07-21 17:54:28,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.0) internal successors, (44), 23 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 17:54:28,918 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2022-07-21 17:54:28,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-21 17:54:28,918 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:54:28,918 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:54:28,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 17:54:29,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-21 17:54:29,119 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-07-21 17:54:29,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:54:29,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1775998622, now seen corresponding path program 1 times [2022-07-21 17:54:29,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:54:29,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364359616] [2022-07-21 17:54:29,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:54:29,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:54:29,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:54:29,232 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:54:29,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:54:29,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364359616] [2022-07-21 17:54:29,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364359616] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 17:54:29,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224056444] [2022-07-21 17:54:29,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:54:29,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:54:29,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 17:54:29,248 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 17:54:29,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 17:54:29,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:54:29,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 52 conjunts are in the unsatisfiable core [2022-07-21 17:54:29,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:54:29,373 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 17:54:29,426 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 17:54:29,427 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 14 treesize of output 20 [2022-07-21 17:54:29,442 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-21 17:54:29,442 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 17:54:29,474 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-21 17:54:29,479 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-21 17:54:29,594 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 25 treesize of output 13 [2022-07-21 17:54:29,597 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-21 17:54:29,636 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:54:29,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 17:54:29,904 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 35 treesize of output 31 [2022-07-21 17:54:29,952 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:54:29,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224056444] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 17:54:29,952 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 17:54:29,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 29 [2022-07-21 17:54:29,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978965886] [2022-07-21 17:54:29,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 17:54:29,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-21 17:54:29,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:54:29,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-21 17:54:29,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=790, Unknown=0, NotChecked=0, Total=870 [2022-07-21 17:54:29,954 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 30 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 30 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 17:54:30,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:54:30,900 INFO L93 Difference]: Finished difference Result 97 states and 102 transitions. [2022-07-21 17:54:30,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 17:54:30,901 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 30 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 22 [2022-07-21 17:54:30,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:54:30,901 INFO L225 Difference]: With dead ends: 97 [2022-07-21 17:54:30,901 INFO L226 Difference]: Without dead ends: 97 [2022-07-21 17:54:30,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=369, Invalid=1611, Unknown=0, NotChecked=0, Total=1980 [2022-07-21 17:54:30,902 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 1019 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1019 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:54:30,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1019 Valid, 268 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 275 Invalid, 0 Unknown, 54 Unchecked, 0.1s Time] [2022-07-21 17:54:30,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-07-21 17:54:30,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 46. [2022-07-21 17:54:30,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 45 states have internal predecessors, (51), 0 states have call successors, (0), 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 17:54:30,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2022-07-21 17:54:30,905 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 22 [2022-07-21 17:54:30,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:54:30,905 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2022-07-21 17:54:30,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 30 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 17:54:30,905 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2022-07-21 17:54:30,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-21 17:54:30,905 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:54:30,905 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:54:30,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-21 17:54:31,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:54:31,115 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-07-21 17:54:31,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:54:31,116 INFO L85 PathProgramCache]: Analyzing trace with hash -928802855, now seen corresponding path program 1 times [2022-07-21 17:54:31,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:54:31,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668994587] [2022-07-21 17:54:31,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:54:31,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:54:31,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:54:31,179 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:54:31,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:54:31,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668994587] [2022-07-21 17:54:31,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668994587] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 17:54:31,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382536184] [2022-07-21 17:54:31,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:54:31,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:54:31,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 17:54:31,181 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 17:54:31,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 17:54:31,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:54:31,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 35 conjunts are in the unsatisfiable core [2022-07-21 17:54:31,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:54:31,262 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-21 17:54:31,321 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 16 treesize of output 8 [2022-07-21 17:54:31,324 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:54:31,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 17:54:31,344 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:54:31,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382536184] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 17:54:31,344 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 17:54:31,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 15 [2022-07-21 17:54:31,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27742883] [2022-07-21 17:54:31,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 17:54:31,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 17:54:31,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:54:31,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 17:54:31,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-07-21 17:54:31,346 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 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 17:54:31,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:54:31,516 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2022-07-21 17:54:31,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 17:54:31,516 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 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 25 [2022-07-21 17:54:31,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:54:31,516 INFO L225 Difference]: With dead ends: 50 [2022-07-21 17:54:31,517 INFO L226 Difference]: Without dead ends: 50 [2022-07-21 17:54:31,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=428, Unknown=0, NotChecked=0, Total=600 [2022-07-21 17:54:31,517 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 204 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:54:31,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 225 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:54:31,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-07-21 17:54:31,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2022-07-21 17:54:31,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 45 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:54:31,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2022-07-21 17:54:31,520 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 25 [2022-07-21 17:54:31,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:54:31,520 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2022-07-21 17:54:31,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 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 17:54:31,520 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2022-07-21 17:54:31,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-21 17:54:31,520 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:54:31,520 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:54:31,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 17:54:31,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:54:31,727 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-07-21 17:54:31,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:54:31,728 INFO L85 PathProgramCache]: Analyzing trace with hash -927170557, now seen corresponding path program 2 times [2022-07-21 17:54:31,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:54:31,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487951920] [2022-07-21 17:54:31,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:54:31,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:54:31,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:54:31,875 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:54:31,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:54:31,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487951920] [2022-07-21 17:54:31,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487951920] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 17:54:31,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559312713] [2022-07-21 17:54:31,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 17:54:31,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:54:31,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 17:54:31,877 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 17:54:31,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 17:54:31,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 17:54:31,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 17:54:31,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 64 conjunts are in the unsatisfiable core [2022-07-21 17:54:31,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:54:31,939 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 17:54:31,968 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-21 17:54:31,972 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-21 17:54:32,038 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 17:54:32,046 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-21 17:54:32,046 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 17:54:32,085 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 19 treesize of output 18 [2022-07-21 17:54:32,088 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 23 treesize of output 22 [2022-07-21 17:54:32,219 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 13 treesize of output 9 [2022-07-21 17:54:32,360 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 17:54:32,362 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 17:54:32,367 INFO L356 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2022-07-21 17:54:32,367 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 61 treesize of output 38 [2022-07-21 17:54:32,375 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 17:54:32,378 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-07-21 17:54:32,378 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2022-07-21 17:54:32,386 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:54:32,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 17:54:36,248 INFO L356 Elim1Store]: treesize reduction 94, result has 7.8 percent of original size [2022-07-21 17:54:36,249 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 280 treesize of output 217 [2022-07-21 17:54:36,258 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 17:54:36,258 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 198 treesize of output 158 [2022-07-21 17:54:36,267 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 17:54:36,267 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 152 [2022-07-21 17:54:36,276 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 17:54:36,276 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 146 treesize of output 140 [2022-07-21 17:54:36,293 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 6 treesize of output 4 [2022-07-21 17:54:36,304 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 6 treesize of output 4 [2022-07-21 17:54:36,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:54:36,315 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 54 treesize of output 52 [2022-07-21 17:54:36,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:54:36,331 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 34 treesize of output 32 [2022-07-21 17:54:36,348 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 17:54:36,349 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 62 [2022-07-21 17:54:36,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:54:36,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:54:36,376 INFO L356 Elim1Store]: treesize reduction 33, result has 31.3 percent of original size [2022-07-21 17:54:36,376 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 422 treesize of output 284 [2022-07-21 17:54:36,387 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 17:54:36,387 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 280 treesize of output 256 [2022-07-21 17:54:36,397 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 17:54:36,397 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 253 treesize of output 245 [2022-07-21 17:54:36,412 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 6 treesize of output 4 [2022-07-21 17:54:36,428 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 4 [2022-07-21 17:54:36,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:54:36,499 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 36 treesize of output 34 [2022-07-21 17:54:36,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:54:36,510 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 26 treesize of output 24 [2022-07-21 17:54:36,661 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 10 treesize of output 8 [2022-07-21 17:54:36,668 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:54:36,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559312713] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 17:54:36,668 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 17:54:36,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 32 [2022-07-21 17:54:36,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397185326] [2022-07-21 17:54:36,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 17:54:36,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-21 17:54:36,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:54:36,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-21 17:54:36,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=913, Unknown=2, NotChecked=0, Total=992 [2022-07-21 17:54:36,670 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 32 states, 32 states have (on average 1.6875) internal successors, (54), 32 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 17:54:37,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:54:37,138 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2022-07-21 17:54:37,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 17:54:37,138 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.6875) internal successors, (54), 32 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 25 [2022-07-21 17:54:37,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:54:37,138 INFO L225 Difference]: With dead ends: 61 [2022-07-21 17:54:37,139 INFO L226 Difference]: Without dead ends: 61 [2022-07-21 17:54:37,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=161, Invalid=1397, Unknown=2, NotChecked=0, Total=1560 [2022-07-21 17:54:37,140 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 46 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 228 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:54:37,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 717 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 214 Invalid, 0 Unknown, 228 Unchecked, 0.1s Time] [2022-07-21 17:54:37,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-07-21 17:54:37,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2022-07-21 17:54:37,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 50 states have (on average 1.28) internal successors, (64), 58 states have internal predecessors, (64), 0 states have call successors, (0), 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 17:54:37,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2022-07-21 17:54:37,144 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 25 [2022-07-21 17:54:37,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:54:37,144 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 64 transitions. [2022-07-21 17:54:37,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.6875) internal successors, (54), 32 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 17:54:37,145 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 64 transitions. [2022-07-21 17:54:37,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-21 17:54:37,145 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:54:37,145 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:54:37,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 17:54:37,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-21 17:54:37,356 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-07-21 17:54:37,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:54:37,356 INFO L85 PathProgramCache]: Analyzing trace with hash -404984653, now seen corresponding path program 2 times [2022-07-21 17:54:37,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:54:37,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075966403] [2022-07-21 17:54:37,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:54:37,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:54:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:54:37,439 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 17:54:37,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:54:37,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075966403] [2022-07-21 17:54:37,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075966403] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 17:54:37,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976768917] [2022-07-21 17:54:37,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 17:54:37,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:54:37,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 17:54:37,441 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 17:54:37,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 17:54:37,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 17:54:37,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 17:54:37,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-21 17:54:37,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:54:37,570 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 17:54:37,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 17:54:37,614 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 17:54:37,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976768917] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 17:54:37,614 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 17:54:37,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-07-21 17:54:37,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981291619] [2022-07-21 17:54:37,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 17:54:37,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 17:54:37,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:54:37,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 17:54:37,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-07-21 17:54:37,616 INFO L87 Difference]: Start difference. First operand 59 states and 64 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 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 17:54:37,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:54:37,670 INFO L93 Difference]: Finished difference Result 135 states and 146 transitions. [2022-07-21 17:54:37,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 17:54:37,670 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 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 17:54:37,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:54:37,671 INFO L225 Difference]: With dead ends: 135 [2022-07-21 17:54:37,671 INFO L226 Difference]: Without dead ends: 135 [2022-07-21 17:54:37,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-07-21 17:54:37,672 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 110 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:54:37,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 295 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:54:37,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-07-21 17:54:37,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 97. [2022-07-21 17:54:37,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 88 states have (on average 1.2159090909090908) internal successors, (107), 96 states have internal predecessors, (107), 0 states have call successors, (0), 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 17:54:37,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 107 transitions. [2022-07-21 17:54:37,683 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 107 transitions. Word has length 28 [2022-07-21 17:54:37,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:54:37,684 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 107 transitions. [2022-07-21 17:54:37,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 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 17:54:37,684 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 107 transitions. [2022-07-21 17:54:37,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-21 17:54:37,689 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:54:37,690 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:54:37,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 17:54:37,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:54:37,903 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-07-21 17:54:37,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:54:37,904 INFO L85 PathProgramCache]: Analyzing trace with hash 330379154, now seen corresponding path program 1 times [2022-07-21 17:54:37,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:54:37,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787574357] [2022-07-21 17:54:37,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:54:37,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:54:37,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:54:37,956 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-21 17:54:37,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:54:37,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787574357] [2022-07-21 17:54:37,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787574357] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:54:37,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:54:37,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 17:54:37,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449665644] [2022-07-21 17:54:37,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:54:37,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 17:54:37,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:54:37,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 17:54:37,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:54:37,959 INFO L87 Difference]: Start difference. First operand 97 states and 107 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 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 17:54:38,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:54:38,029 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2022-07-21 17:54:38,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 17:54:38,029 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 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 29 [2022-07-21 17:54:38,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:54:38,030 INFO L225 Difference]: With dead ends: 108 [2022-07-21 17:54:38,030 INFO L226 Difference]: Without dead ends: 108 [2022-07-21 17:54:38,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-21 17:54:38,031 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 107 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:54:38,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 90 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:54:38,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-07-21 17:54:38,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 98. [2022-07-21 17:54:38,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 90 states have (on average 1.2222222222222223) internal successors, (110), 97 states have internal predecessors, (110), 0 states have call successors, (0), 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 17:54:38,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 110 transitions. [2022-07-21 17:54:38,033 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 110 transitions. Word has length 29 [2022-07-21 17:54:38,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:54:38,034 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 110 transitions. [2022-07-21 17:54:38,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 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 17:54:38,034 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 110 transitions. [2022-07-21 17:54:38,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-21 17:54:38,034 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:54:38,034 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:54:38,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 17:54:38,035 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-07-21 17:54:38,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:54:38,035 INFO L85 PathProgramCache]: Analyzing trace with hash 330379155, now seen corresponding path program 1 times [2022-07-21 17:54:38,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:54:38,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95826827] [2022-07-21 17:54:38,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:54:38,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:54:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:54:38,089 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 17:54:38,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:54:38,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95826827] [2022-07-21 17:54:38,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95826827] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:54:38,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:54:38,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 17:54:38,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263097803] [2022-07-21 17:54:38,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:54:38,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 17:54:38,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:54:38,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 17:54:38,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:54:38,091 INFO L87 Difference]: Start difference. First operand 98 states and 110 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 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 17:54:38,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:54:38,177 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2022-07-21 17:54:38,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 17:54:38,177 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 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 29 [2022-07-21 17:54:38,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:54:38,178 INFO L225 Difference]: With dead ends: 106 [2022-07-21 17:54:38,178 INFO L226 Difference]: Without dead ends: 106 [2022-07-21 17:54:38,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-21 17:54:38,179 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 143 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:54:38,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 68 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:54:38,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-07-21 17:54:38,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 100. [2022-07-21 17:54:38,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 92 states have (on average 1.2065217391304348) internal successors, (111), 99 states have internal predecessors, (111), 0 states have call successors, (0), 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 17:54:38,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 111 transitions. [2022-07-21 17:54:38,181 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 111 transitions. Word has length 29 [2022-07-21 17:54:38,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:54:38,182 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 111 transitions. [2022-07-21 17:54:38,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 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 17:54:38,182 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 111 transitions. [2022-07-21 17:54:38,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-21 17:54:38,182 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:54:38,182 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:54:38,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 17:54:38,183 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-07-21 17:54:38,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:54:38,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1624346598, now seen corresponding path program 3 times [2022-07-21 17:54:38,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:54:38,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338673850] [2022-07-21 17:54:38,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:54:38,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:54:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:54:38,212 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-21 17:54:38,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:54:38,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338673850] [2022-07-21 17:54:38,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338673850] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 17:54:38,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342590830] [2022-07-21 17:54:38,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 17:54:38,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:54:38,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 17:54:38,228 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 17:54:38,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 17:54:38,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-21 17:54:38,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 17:54:38,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 17:54:38,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:54:38,318 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-21 17:54:38,319 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:54:38,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342590830] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:54:38,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 17:54:38,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2022-07-21 17:54:38,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090956478] [2022-07-21 17:54:38,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:54:38,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 17:54:38,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:54:38,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 17:54:38,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-21 17:54:38,320 INFO L87 Difference]: Start difference. First operand 100 states and 111 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 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 17:54:38,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:54:38,350 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2022-07-21 17:54:38,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 17:54:38,351 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 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 29 [2022-07-21 17:54:38,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:54:38,351 INFO L225 Difference]: With dead ends: 104 [2022-07-21 17:54:38,351 INFO L226 Difference]: Without dead ends: 104 [2022-07-21 17:54:38,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 17:54:38,352 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 126 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:54:38,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 83 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:54:38,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-07-21 17:54:38,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 87. [2022-07-21 17:54:38,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 79 states have (on average 1.2025316455696202) internal successors, (95), 86 states have internal predecessors, (95), 0 states have call successors, (0), 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 17:54:38,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2022-07-21 17:54:38,354 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 29 [2022-07-21 17:54:38,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:54:38,354 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2022-07-21 17:54:38,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 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 17:54:38,354 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2022-07-21 17:54:38,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-21 17:54:38,355 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:54:38,355 INFO L195 NwaCegarLoop]: trace histogram [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 17:54:38,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 17:54:38,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:54:38,573 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-07-21 17:54:38,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:54:38,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1651817732, now seen corresponding path program 1 times [2022-07-21 17:54:38,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:54:38,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526851969] [2022-07-21 17:54:38,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:54:38,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:54:38,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:54:38,624 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 17:54:38,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:54:38,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526851969] [2022-07-21 17:54:38,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526851969] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 17:54:38,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441018122] [2022-07-21 17:54:38,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:54:38,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:54:38,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 17:54:38,627 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 17:54:38,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 17:54:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:54:38,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-21 17:54:38,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:54:38,747 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 17:54:38,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:54:38,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441018122] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:54:38,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 17:54:38,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11 [2022-07-21 17:54:38,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530701946] [2022-07-21 17:54:38,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:54:38,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 17:54:38,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:54:38,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 17:54:38,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-21 17:54:38,749 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:54:38,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:54:38,811 INFO L93 Difference]: Finished difference Result 90 states and 97 transitions. [2022-07-21 17:54:38,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 17:54:38,812 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-07-21 17:54:38,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:54:38,812 INFO L225 Difference]: With dead ends: 90 [2022-07-21 17:54:38,812 INFO L226 Difference]: Without dead ends: 90 [2022-07-21 17:54:38,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-07-21 17:54:38,813 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 130 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:54:38,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 90 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:54:38,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-07-21 17:54:38,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 87. [2022-07-21 17:54:38,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 79 states have (on average 1.1898734177215189) internal successors, (94), 86 states have internal predecessors, (94), 0 states have call successors, (0), 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 17:54:38,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 94 transitions. [2022-07-21 17:54:38,817 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 94 transitions. Word has length 30 [2022-07-21 17:54:38,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:54:38,817 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 94 transitions. [2022-07-21 17:54:38,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 17:54:38,817 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 94 transitions. [2022-07-21 17:54:38,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-21 17:54:38,818 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:54:38,818 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] [2022-07-21 17:54:38,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-21 17:54:39,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-21 17:54:39,035 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-07-21 17:54:39,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:54:39,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1719710876, now seen corresponding path program 1 times [2022-07-21 17:54:39,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:54:39,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474614068] [2022-07-21 17:54:39,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:54:39,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:54:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:54:39,081 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 17:54:39,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:54:39,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474614068] [2022-07-21 17:54:39,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474614068] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 17:54:39,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807015894] [2022-07-21 17:54:39,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:54:39,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:54:39,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 17:54:39,095 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 17:54:39,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 17:54:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:54:39,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 17:54:39,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:54:39,215 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 17:54:39,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 17:54:39,233 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 17:54:39,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807015894] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 17:54:39,233 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 17:54:39,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-07-21 17:54:39,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758851076] [2022-07-21 17:54:39,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 17:54:39,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 17:54:39,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:54:39,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 17:54:39,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:54:39,237 INFO L87 Difference]: Start difference. First operand 87 states and 94 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 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 17:54:39,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:54:39,282 INFO L93 Difference]: Finished difference Result 95 states and 101 transitions. [2022-07-21 17:54:39,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 17:54:39,283 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 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 31 [2022-07-21 17:54:39,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:54:39,284 INFO L225 Difference]: With dead ends: 95 [2022-07-21 17:54:39,284 INFO L226 Difference]: Without dead ends: 95 [2022-07-21 17:54:39,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-07-21 17:54:39,285 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 87 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:54:39,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 235 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:54:39,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-07-21 17:54:39,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 78. [2022-07-21 17:54:39,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 70 states have (on average 1.2) internal successors, (84), 77 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 17:54:39,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2022-07-21 17:54:39,288 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 31 [2022-07-21 17:54:39,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:54:39,288 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2022-07-21 17:54:39,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 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 17:54:39,288 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2022-07-21 17:54:39,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-21 17:54:39,290 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:54:39,290 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 17:54:39,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-21 17:54:39,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:54:39,495 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-07-21 17:54:39,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:54:39,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1739610939, now seen corresponding path program 1 times [2022-07-21 17:54:39,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:54:39,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038214118] [2022-07-21 17:54:39,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:54:39,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:54:39,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:54:39,530 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 17:54:39,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:54:39,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038214118] [2022-07-21 17:54:39,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038214118] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:54:39,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:54:39,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 17:54:39,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757021733] [2022-07-21 17:54:39,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:54:39,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 17:54:39,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:54:39,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 17:54:39,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:54:39,531 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 7 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 17:54:39,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:54:39,591 INFO L93 Difference]: Finished difference Result 79 states and 85 transitions. [2022-07-21 17:54:39,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 17:54:39,591 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 7 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 32 [2022-07-21 17:54:39,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:54:39,591 INFO L225 Difference]: With dead ends: 79 [2022-07-21 17:54:39,591 INFO L226 Difference]: Without dead ends: 79 [2022-07-21 17:54:39,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-21 17:54:39,592 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 116 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:54:39,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 77 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:54:39,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-07-21 17:54:39,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2022-07-21 17:54:39,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 71 states have (on average 1.1971830985915493) internal successors, (85), 78 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 17:54:39,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 85 transitions. [2022-07-21 17:54:39,594 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 85 transitions. Word has length 32 [2022-07-21 17:54:39,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:54:39,594 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 85 transitions. [2022-07-21 17:54:39,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 7 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 17:54:39,594 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 85 transitions. [2022-07-21 17:54:39,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-21 17:54:39,595 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:54:39,595 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:54:39,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 17:54:39,595 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-07-21 17:54:39,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:54:39,595 INFO L85 PathProgramCache]: Analyzing trace with hash -183294639, now seen corresponding path program 1 times [2022-07-21 17:54:39,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:54:39,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871006162] [2022-07-21 17:54:39,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:54:39,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:54:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:54:39,731 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 17:54:39,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:54:39,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871006162] [2022-07-21 17:54:39,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871006162] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 17:54:39,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767300091] [2022-07-21 17:54:39,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:54:39,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:54:39,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 17:54:39,756 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 17:54:39,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-21 17:54:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:54:39,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 68 conjunts are in the unsatisfiable core [2022-07-21 17:54:39,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:54:39,825 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 17:54:39,838 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-21 17:54:39,839 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 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-21 17:54:39,868 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-21 17:54:39,930 INFO L356 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2022-07-21 17:54:39,930 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2022-07-21 17:54:39,974 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 37 treesize of output 28 [2022-07-21 17:54:39,982 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-21 17:54:40,124 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 15 treesize of output 7 [2022-07-21 17:54:40,225 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-21 17:54:40,225 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 29 [2022-07-21 17:54:40,300 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 17:54:40,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 17:54:43,113 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 17:54:43,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767300091] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 17:54:43,113 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 17:54:43,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 36 [2022-07-21 17:54:43,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229474876] [2022-07-21 17:54:43,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 17:54:43,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-21 17:54:43,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:54:43,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-21 17:54:43,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1200, Unknown=1, NotChecked=0, Total=1332 [2022-07-21 17:54:43,115 INFO L87 Difference]: Start difference. First operand 79 states and 85 transitions. Second operand has 37 states, 36 states have (on average 1.9166666666666667) internal successors, (69), 37 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 17:54:45,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:54:45,994 INFO L93 Difference]: Finished difference Result 97 states and 105 transitions. [2022-07-21 17:54:45,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 17:54:45,995 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.9166666666666667) internal successors, (69), 37 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 32 [2022-07-21 17:54:45,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:54:45,995 INFO L225 Difference]: With dead ends: 97 [2022-07-21 17:54:45,995 INFO L226 Difference]: Without dead ends: 97 [2022-07-21 17:54:45,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=474, Invalid=2281, Unknown=1, NotChecked=0, Total=2756 [2022-07-21 17:54:45,996 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 124 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 141 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:54:45,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 456 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 365 Invalid, 0 Unknown, 141 Unchecked, 0.2s Time] [2022-07-21 17:54:45,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-07-21 17:54:45,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 82. [2022-07-21 17:54:45,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 74 states have (on average 1.2162162162162162) internal successors, (90), 81 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 17:54:45,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2022-07-21 17:54:45,998 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 32 [2022-07-21 17:54:45,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:54:45,998 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2022-07-21 17:54:45,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.9166666666666667) internal successors, (69), 37 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 17:54:45,998 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2022-07-21 17:54:45,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-21 17:54:45,999 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:54:45,999 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:54:46,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-21 17:54:46,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-07-21 17:54:46,199 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-07-21 17:54:46,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:54:46,200 INFO L85 PathProgramCache]: Analyzing trace with hash -183294638, now seen corresponding path program 1 times [2022-07-21 17:54:46,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:54:46,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851458689] [2022-07-21 17:54:46,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:54:46,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:54:46,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:54:46,442 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 17:54:46,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:54:46,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851458689] [2022-07-21 17:54:46,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851458689] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 17:54:46,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863902661] [2022-07-21 17:54:46,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:54:46,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:54:46,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 17:54:46,443 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 17:54:46,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-21 17:54:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:54:46,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 82 conjunts are in the unsatisfiable core [2022-07-21 17:54:46,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:54:46,520 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 17:54:46,592 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 17:54:46,593 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 14 treesize of output 20 [2022-07-21 17:54:46,610 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-21 17:54:46,610 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 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-21 17:54:46,658 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-21 17:54:46,662 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-21 17:54:46,736 INFO L356 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2022-07-21 17:54:46,737 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-07-21 17:54:46,743 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-07-21 17:54:46,790 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 37 treesize of output 28 [2022-07-21 17:54:46,793 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 23 treesize of output 22 [2022-07-21 17:54:47,101 INFO L356 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-07-21 17:54:47,102 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 45 [2022-07-21 17:54:47,108 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-07-21 17:54:47,108 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2022-07-21 17:54:47,205 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 17:54:47,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 17:54:47,964 WARN L833 $PredicateComparison]: unable to prove that (forall ((|#memory_$Pointer$.base| (Array Int (Array Int Int))) (|#memory_$Pointer$.offset| (Array Int (Array Int Int))) (v_ArrVal_526 Int) (|v_ULTIMATE.start_sll_create_~new_head~0#1.base_29| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_29|) 0)) (let ((.cse0 (select (select (let ((.cse2 (store |#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_create_~new_head~0#1.base| (store (select |#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_create_~new_head~0#1.offset| |c_ULTIMATE.start_sll_create_~head~0#1.offset|)))) (store .cse2 |v_ULTIMATE.start_sll_create_~new_head~0#1.base_29| (store (select .cse2 |v_ULTIMATE.start_sll_create_~new_head~0#1.base_29|) 0 |c_ULTIMATE.start_sll_create_~new_head~0#1.offset|))) |c_ULTIMATE.start_sll_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_create_~new_head~0#1.offset|))) (and (<= 0 .cse0) (<= (+ .cse0 4) (select (store |c_#length| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_29| v_ArrVal_526) (select (select (let ((.cse1 (store |#memory_$Pointer$.base| |c_ULTIMATE.start_sll_create_~new_head~0#1.base| (store (select |#memory_$Pointer$.base| |c_ULTIMATE.start_sll_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_create_~new_head~0#1.offset| |c_ULTIMATE.start_sll_create_~head~0#1.base|)))) (store .cse1 |v_ULTIMATE.start_sll_create_~new_head~0#1.base_29| (store (select .cse1 |v_ULTIMATE.start_sll_create_~new_head~0#1.base_29|) 0 |c_ULTIMATE.start_sll_create_~new_head~0#1.base|))) |c_ULTIMATE.start_sll_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_create_~new_head~0#1.offset|))))) (< v_ArrVal_526 4))) is different from false [2022-07-21 17:54:48,112 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 17:54:48,116 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 17:54:48,117 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 17:54:48,180 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 17:54:48,184 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 17:54:48,186 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 17:54:48,393 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 65 treesize of output 61 [2022-07-21 17:54:48,584 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 4 not checked. [2022-07-21 17:54:48,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863902661] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 17:54:48,584 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 17:54:48,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 46 [2022-07-21 17:54:48,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782443965] [2022-07-21 17:54:48,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 17:54:48,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-07-21 17:54:48,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:54:48,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-07-21 17:54:48,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1936, Unknown=1, NotChecked=88, Total=2162 [2022-07-21 17:54:48,585 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand has 47 states, 46 states have (on average 1.6521739130434783) internal successors, (76), 47 states have internal predecessors, (76), 0 states have call successors, (0), 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 17:54:50,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:54:50,263 INFO L93 Difference]: Finished difference Result 111 states and 118 transitions. [2022-07-21 17:54:50,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 17:54:50,264 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.6521739130434783) internal successors, (76), 47 states have internal predecessors, (76), 0 states have call successors, (0), 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 17:54:50,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:54:50,264 INFO L225 Difference]: With dead ends: 111 [2022-07-21 17:54:50,264 INFO L226 Difference]: Without dead ends: 111 [2022-07-21 17:54:50,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=569, Invalid=3594, Unknown=1, NotChecked=126, Total=4290 [2022-07-21 17:54:50,265 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 319 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 242 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 17:54:50,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 882 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 587 Invalid, 0 Unknown, 242 Unchecked, 0.3s Time] [2022-07-21 17:54:50,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-07-21 17:54:50,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 82. [2022-07-21 17:54:50,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 74 states have (on average 1.2027027027027026) internal successors, (89), 81 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 17:54:50,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 89 transitions. [2022-07-21 17:54:50,267 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 89 transitions. Word has length 32 [2022-07-21 17:54:50,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:54:50,267 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 89 transitions. [2022-07-21 17:54:50,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.6521739130434783) internal successors, (76), 47 states have internal predecessors, (76), 0 states have call successors, (0), 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 17:54:50,267 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 89 transitions. [2022-07-21 17:54:50,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-21 17:54:50,268 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:54:50,268 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, 1, 1, 1] [2022-07-21 17:54:50,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-21 17:54:50,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-07-21 17:54:50,475 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-07-21 17:54:50,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:54:50,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1673970377, now seen corresponding path program 1 times [2022-07-21 17:54:50,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:54:50,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580612453] [2022-07-21 17:54:50,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:54:50,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:54:50,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:54:50,637 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:54:50,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:54:50,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580612453] [2022-07-21 17:54:50,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580612453] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 17:54:50,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959185047] [2022-07-21 17:54:50,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:54:50,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:54:50,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 17:54:50,639 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 17:54:50,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-21 17:54:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:54:50,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 53 conjunts are in the unsatisfiable core [2022-07-21 17:54:50,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:54:50,725 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 17:54:50,735 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-21 17:54:50,735 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 17:54:50,756 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-21 17:54:50,927 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 17:54:50,927 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 21 [2022-07-21 17:54:51,063 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 0 case distinctions, treesize of input 12 treesize of output 14 [2022-07-21 17:54:51,066 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:54:51,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 17:54:51,227 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 17:54:51,227 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 25 treesize of output 29 [2022-07-21 17:54:51,341 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 10 treesize of output 8 [2022-07-21 17:54:51,343 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 14 treesize of output 12 [2022-07-21 17:54:51,346 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 11 treesize of output 9 [2022-07-21 17:54:51,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:54:51,392 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:54:51,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959185047] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 17:54:51,392 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 17:54:51,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 16] total 34 [2022-07-21 17:54:51,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249282472] [2022-07-21 17:54:51,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 17:54:51,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-21 17:54:51,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:54:51,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-21 17:54:51,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=1106, Unknown=0, NotChecked=0, Total=1190 [2022-07-21 17:54:51,393 INFO L87 Difference]: Start difference. First operand 82 states and 89 transitions. Second operand has 35 states, 34 states have (on average 2.176470588235294) internal successors, (74), 35 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 17:54:52,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:54:52,029 INFO L93 Difference]: Finished difference Result 89 states and 96 transitions. [2022-07-21 17:54:52,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 17:54:52,029 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.176470588235294) internal successors, (74), 35 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) Word has length 35 [2022-07-21 17:54:52,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:54:52,030 INFO L225 Difference]: With dead ends: 89 [2022-07-21 17:54:52,030 INFO L226 Difference]: Without dead ends: 89 [2022-07-21 17:54:52,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=397, Invalid=2255, Unknown=0, NotChecked=0, Total=2652 [2022-07-21 17:54:52,031 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 366 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:54:52,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 334 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:54:52,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-07-21 17:54:52,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 85. [2022-07-21 17:54:52,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 77 states have (on average 1.2207792207792207) internal successors, (94), 84 states have internal predecessors, (94), 0 states have call successors, (0), 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 17:54:52,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2022-07-21 17:54:52,032 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 35 [2022-07-21 17:54:52,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:54:52,032 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2022-07-21 17:54:52,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.176470588235294) internal successors, (74), 35 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 17:54:52,032 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2022-07-21 17:54:52,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-21 17:54:52,033 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:54:52,033 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, 1, 1, 1] [2022-07-21 17:54:52,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-21 17:54:52,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-07-21 17:54:52,233 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-07-21 17:54:52,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:54:52,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1673970376, now seen corresponding path program 1 times [2022-07-21 17:54:52,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:54:52,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100828344] [2022-07-21 17:54:52,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:54:52,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:54:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:54:52,435 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:54:52,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:54:52,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100828344] [2022-07-21 17:54:52,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100828344] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 17:54:52,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445513841] [2022-07-21 17:54:52,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:54:52,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:54:52,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 17:54:52,437 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 17:54:52,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-21 17:54:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:54:52,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 49 conjunts are in the unsatisfiable core [2022-07-21 17:54:52,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:54:52,517 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 17:54:52,538 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-21 17:54:52,850 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 17:54:52,850 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-07-21 17:54:52,858 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 17:54:52,858 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2022-07-21 17:54:53,118 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:54:53,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 17:54:53,574 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 17:54:53,574 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 36 [2022-07-21 17:54:55,267 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 14 treesize of output 12 [2022-07-21 17:54:55,270 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 26 treesize of output 24 [2022-07-21 17:54:55,277 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 10 treesize of output 8 [2022-07-21 17:54:55,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:54:55,478 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 44 treesize of output 40 [2022-07-21 17:54:55,500 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:54:55,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445513841] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 17:54:55,500 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 17:54:55,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 16] total 40 [2022-07-21 17:54:55,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755094844] [2022-07-21 17:54:55,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 17:54:55,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-07-21 17:54:55,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:54:55,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-07-21 17:54:55,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1534, Unknown=0, NotChecked=0, Total=1640 [2022-07-21 17:54:55,502 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand has 41 states, 40 states have (on average 2.125) internal successors, (85), 41 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 17:54:56,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:54:56,030 INFO L93 Difference]: Finished difference Result 98 states and 107 transitions. [2022-07-21 17:54:56,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 17:54:56,031 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.125) internal successors, (85), 41 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) Word has length 35 [2022-07-21 17:54:56,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:54:56,031 INFO L225 Difference]: With dead ends: 98 [2022-07-21 17:54:56,031 INFO L226 Difference]: Without dead ends: 98 [2022-07-21 17:54:56,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=247, Invalid=2509, Unknown=0, NotChecked=0, Total=2756 [2022-07-21 17:54:56,032 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 97 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 172 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:54:56,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 586 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 169 Invalid, 0 Unknown, 172 Unchecked, 0.1s Time] [2022-07-21 17:54:56,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-07-21 17:54:56,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 85. [2022-07-21 17:54:56,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 77 states have (on average 1.2077922077922079) internal successors, (93), 84 states have internal predecessors, (93), 0 states have call successors, (0), 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 17:54:56,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 93 transitions. [2022-07-21 17:54:56,034 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 93 transitions. Word has length 35 [2022-07-21 17:54:56,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:54:56,034 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 93 transitions. [2022-07-21 17:54:56,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.125) internal successors, (85), 41 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 17:54:56,034 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 93 transitions. [2022-07-21 17:54:56,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-21 17:54:56,035 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:54:56,035 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:54:56,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-21 17:54:56,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-07-21 17:54:56,240 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-07-21 17:54:56,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:54:56,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1628758875, now seen corresponding path program 2 times [2022-07-21 17:54:56,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:54:56,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115870809] [2022-07-21 17:54:56,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:54:56,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:54:56,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:54:56,383 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 17:54:56,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:54:56,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115870809] [2022-07-21 17:54:56,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115870809] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 17:54:56,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572603057] [2022-07-21 17:54:56,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 17:54:56,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:54:56,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 17:54:56,385 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 17:54:56,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-21 17:54:56,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 17:54:56,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 17:54:56,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 62 conjunts are in the unsatisfiable core [2022-07-21 17:54:56,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:54:56,506 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 17:54:56,526 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-21 17:54:56,572 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-21 17:54:56,572 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 17:54:56,599 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 20 treesize of output 19 [2022-07-21 17:54:56,604 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-21 17:54:56,715 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 15 treesize of output 7 [2022-07-21 17:54:56,781 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-21 17:54:56,781 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 15 [2022-07-21 17:54:56,784 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 17:54:56,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 17:54:58,990 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 10 treesize of output 8 [2022-07-21 17:54:59,005 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 17:54:59,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572603057] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 17:54:59,005 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 17:54:59,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 16] total 29 [2022-07-21 17:54:59,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962287921] [2022-07-21 17:54:59,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 17:54:59,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-21 17:54:59,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:54:59,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-21 17:54:59,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=739, Unknown=1, NotChecked=0, Total=812 [2022-07-21 17:54:59,008 INFO L87 Difference]: Start difference. First operand 85 states and 93 transitions. Second operand has 29 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 29 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 17:54:59,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:54:59,743 INFO L93 Difference]: Finished difference Result 89 states and 96 transitions. [2022-07-21 17:54:59,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 17:54:59,744 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 29 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 35 [2022-07-21 17:54:59,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:54:59,744 INFO L225 Difference]: With dead ends: 89 [2022-07-21 17:54:59,744 INFO L226 Difference]: Without dead ends: 89 [2022-07-21 17:54:59,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=380, Invalid=1599, Unknown=1, NotChecked=0, Total=1980 [2022-07-21 17:54:59,745 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 258 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:54:59,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 446 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 337 Invalid, 0 Unknown, 45 Unchecked, 0.1s Time] [2022-07-21 17:54:59,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-07-21 17:54:59,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 85. [2022-07-21 17:54:59,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 77 states have (on average 1.1948051948051948) internal successors, (92), 84 states have internal predecessors, (92), 0 states have call successors, (0), 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 17:54:59,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 92 transitions. [2022-07-21 17:54:59,749 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 92 transitions. Word has length 35 [2022-07-21 17:54:59,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:54:59,749 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 92 transitions. [2022-07-21 17:54:59,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 29 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 17:54:59,749 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 92 transitions. [2022-07-21 17:54:59,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-21 17:54:59,750 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:54:59,750 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:54:59,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-21 17:54:59,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:54:59,968 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-07-21 17:54:59,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:54:59,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1627126577, now seen corresponding path program 2 times [2022-07-21 17:54:59,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:54:59,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565043770] [2022-07-21 17:54:59,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:54:59,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:54:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:00,362 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 17:55:00,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:00,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565043770] [2022-07-21 17:55:00,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565043770] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 17:55:00,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876450376] [2022-07-21 17:55:00,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 17:55:00,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:55:00,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 17:55:00,364 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 17:55:00,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-21 17:55:00,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 17:55:00,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 17:55:00,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 97 conjunts are in the unsatisfiable core [2022-07-21 17:55:00,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:55:00,460 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 17:55:00,494 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-21 17:55:00,497 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-21 17:55:00,519 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-21 17:55:00,519 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 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-21 17:55:00,570 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 19 treesize of output 18 [2022-07-21 17:55:00,572 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 23 treesize of output 22 [2022-07-21 17:55:00,668 INFO L356 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2022-07-21 17:55:00,668 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-07-21 17:55:00,728 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-07-21 17:55:00,728 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 43 [2022-07-21 17:55:00,731 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2022-07-21 17:55:01,210 INFO L356 Elim1Store]: treesize reduction 85, result has 11.5 percent of original size [2022-07-21 17:55:01,211 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 132 treesize of output 74 [2022-07-21 17:55:01,221 INFO L356 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2022-07-21 17:55:01,221 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 25 [2022-07-21 17:55:01,276 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 17:55:01,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 17:55:03,614 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_sll_create_~new_head~0#1.base_39| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_39|) 0)) (let ((.cse3 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_39| (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_39|) 0 |c_ULTIMATE.start_sll_create_~head~0#1.offset|))) (.cse0 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_39| (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_39|) 0 |c_ULTIMATE.start_sll_create_~head~0#1.base|)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_sll_create_~head~0#1.base|) |c_ULTIMATE.start_sll_create_~head~0#1.offset|)) (.cse2 (select (select .cse3 |c_ULTIMATE.start_sll_create_~head~0#1.base|) |c_ULTIMATE.start_sll_create_~head~0#1.offset|))) (and (= (select (select .cse0 .cse1) .cse2) 0) (= (select (select .cse3 .cse1) .cse2) 0)))))) is different from false [2022-07-21 17:55:05,638 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_sll_create_~new_head~0#1.base_39| Int)) (or (let ((.cse0 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_39| (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_39|) 0 |c_ULTIMATE.start_sll_create_~new_head~0#1.offset|))) (.cse3 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_39| (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_39|) 0 |c_ULTIMATE.start_sll_create_~new_head~0#1.base|)))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_sll_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_create_~new_head~0#1.offset|)) (.cse2 (select (select .cse0 |c_ULTIMATE.start_sll_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_create_~new_head~0#1.offset|))) (and (= (select (select .cse0 .cse1) .cse2) 0) (= 0 (select (select .cse3 .cse1) .cse2))))) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_39|) 0)))) is different from false [2022-07-21 17:55:30,277 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 17:55:30,279 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 1034 treesize of output 970 [2022-07-21 17:55:30,282 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 17:55:30,301 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 17:55:30,303 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 4502 treesize of output 4246 [2022-07-21 17:55:30,309 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 17:55:30,826 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_sll_create_~new_head~0#1.base_40| Int) (|#memory_$Pointer$.base| (Array Int (Array Int Int))) (|#memory_$Pointer$.offset| (Array Int (Array Int Int))) (|v_ULTIMATE.start_sll_create_~new_head~0#1.base_39| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_40|) 0)) (let ((.cse3 (let ((.cse6 (let ((.cse7 (store |#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_create_~new_head~0#1.base| (store (select |#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_create_~new_head~0#1.offset| |c_ULTIMATE.start_sll_create_~head~0#1.offset|)))) (store .cse7 |v_ULTIMATE.start_sll_create_~new_head~0#1.base_40| (store (select .cse7 |v_ULTIMATE.start_sll_create_~new_head~0#1.base_40|) 0 |c_ULTIMATE.start_sll_create_~new_head~0#1.offset|))))) (store .cse6 |v_ULTIMATE.start_sll_create_~new_head~0#1.base_39| (store (select .cse6 |v_ULTIMATE.start_sll_create_~new_head~0#1.base_39|) 0 0)))) (.cse0 (let ((.cse4 (let ((.cse5 (store |#memory_$Pointer$.base| |c_ULTIMATE.start_sll_create_~new_head~0#1.base| (store (select |#memory_$Pointer$.base| |c_ULTIMATE.start_sll_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_create_~new_head~0#1.offset| |c_ULTIMATE.start_sll_create_~head~0#1.base|)))) (store .cse5 |v_ULTIMATE.start_sll_create_~new_head~0#1.base_40| (store (select .cse5 |v_ULTIMATE.start_sll_create_~new_head~0#1.base_40|) 0 |c_ULTIMATE.start_sll_create_~new_head~0#1.base|))))) (store .cse4 |v_ULTIMATE.start_sll_create_~new_head~0#1.base_39| (store (select .cse4 |v_ULTIMATE.start_sll_create_~new_head~0#1.base_39|) 0 |v_ULTIMATE.start_sll_create_~new_head~0#1.base_40|))))) (let ((.cse1 (select (select .cse0 |v_ULTIMATE.start_sll_create_~new_head~0#1.base_40|) 0)) (.cse2 (select (select .cse3 |v_ULTIMATE.start_sll_create_~new_head~0#1.base_40|) 0))) (and (= (select (select .cse0 .cse1) .cse2) 0) (= (select (select .cse3 .cse1) .cse2) 0)))) (not (= (select (store |c_#valid| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_40| 1) |v_ULTIMATE.start_sll_create_~new_head~0#1.base_39|) 0)))) is different from false [2022-07-21 17:55:30,832 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 17:55:30,834 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 1034 treesize of output 970 [2022-07-21 17:55:30,838 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 17:55:30,854 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 17:55:30,857 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 4502 treesize of output 4246 [2022-07-21 17:55:30,890 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 17:55:31,548 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-21 17:55:31,548 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 22 treesize of output 18 [2022-07-21 17:55:31,553 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 17:55:31,553 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 17:55:31,556 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2238 treesize of output 2110 [2022-07-21 17:55:31,559 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 17:55:31,559 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 17:55:31,580 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 17:55:31,580 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 17:55:31,583 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 2609 treesize of output 2353 [2022-07-21 17:55:31,588 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 17:55:31,589 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 17:55:31,595 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 9 not checked. [2022-07-21 17:55:31,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876450376] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 17:55:31,596 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 17:55:31,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 51 [2022-07-21 17:55:31,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024989820] [2022-07-21 17:55:31,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 17:55:31,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-07-21 17:55:31,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:31,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-07-21 17:55:31,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=2116, Unknown=13, NotChecked=282, Total=2550 [2022-07-21 17:55:31,603 INFO L87 Difference]: Start difference. First operand 85 states and 92 transitions. Second operand has 51 states, 51 states have (on average 1.588235294117647) internal successors, (81), 51 states have internal predecessors, (81), 0 states have call successors, (0), 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 17:55:33,829 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_create_~new_head~0#1.offset|))) (and (= (select (select |c_#memory_$Pointer$.base| .cse0) 0) 0) (= |c_ULTIMATE.start_sll_create_~new_head~0#1.offset| 0) (forall ((|v_ULTIMATE.start_sll_create_~new_head~0#1.base_39| Int)) (or (let ((.cse1 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_39| (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_39|) 0 |c_ULTIMATE.start_sll_create_~new_head~0#1.offset|))) (.cse4 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_39| (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_39|) 0 |c_ULTIMATE.start_sll_create_~new_head~0#1.base|)))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_sll_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_create_~new_head~0#1.offset|)) (.cse3 (select (select .cse1 |c_ULTIMATE.start_sll_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_create_~new_head~0#1.offset|))) (and (= (select (select .cse1 .cse2) .cse3) 0) (= 0 (select (select .cse4 .cse2) .cse3))))) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_39|) 0)))) (not (= |c_ULTIMATE.start_sll_create_~new_head~0#1.base| .cse0)) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_create_~new_head~0#1.offset|) 0) (= 0 (select (select |c_#memory_$Pointer$.offset| .cse0) 0)) (= (select |c_#valid| |c_ULTIMATE.start_sll_create_~new_head~0#1.base|) 1) (= (select |c_#valid| .cse0) 1))) is different from false [2022-07-21 17:55:35,840 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse4 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_create_~head~0#1.base|) |c_ULTIMATE.start_sll_create_~head~0#1.offset|))) (and (forall ((|v_ULTIMATE.start_sll_create_~new_head~0#1.base_39| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_39|) 0)) (let ((.cse3 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_39| (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_39|) 0 |c_ULTIMATE.start_sll_create_~head~0#1.offset|))) (.cse0 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_39| (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_create_~new_head~0#1.base_39|) 0 |c_ULTIMATE.start_sll_create_~head~0#1.base|)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_sll_create_~head~0#1.base|) |c_ULTIMATE.start_sll_create_~head~0#1.offset|)) (.cse2 (select (select .cse3 |c_ULTIMATE.start_sll_create_~head~0#1.base|) |c_ULTIMATE.start_sll_create_~head~0#1.offset|))) (and (= (select (select .cse0 .cse1) .cse2) 0) (= (select (select .cse3 .cse1) .cse2) 0)))))) (= (select |c_#valid| |c_ULTIMATE.start_sll_create_~head~0#1.base|) 1) (not (= |c_ULTIMATE.start_sll_create_~head~0#1.base| .cse4)) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_create_~head~0#1.base|) |c_ULTIMATE.start_sll_create_~head~0#1.offset|) 0) (= (select (select |c_#memory_$Pointer$.base| .cse4) 0) 0) (= (select (select |c_#memory_$Pointer$.offset| .cse4) 0) 0) (= (select |c_#valid| .cse4) 1) (= |c_ULTIMATE.start_sll_create_~head~0#1.offset| 0))) is different from false [2022-07-21 17:55:36,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:36,361 INFO L93 Difference]: Finished difference Result 103 states and 111 transitions. [2022-07-21 17:55:36,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 17:55:36,362 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.588235294117647) internal successors, (81), 51 states have internal predecessors, (81), 0 states have call successors, (0), 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 35 [2022-07-21 17:55:36,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:36,362 INFO L225 Difference]: With dead ends: 103 [2022-07-21 17:55:36,362 INFO L226 Difference]: Without dead ends: 103 [2022-07-21 17:55:36,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 34.1s TimeCoverageRelationStatistics Valid=229, Invalid=2856, Unknown=15, NotChecked=560, Total=3660 [2022-07-21 17:55:36,364 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 45 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 198 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:36,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 833 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 523 Invalid, 0 Unknown, 198 Unchecked, 0.3s Time] [2022-07-21 17:55:36,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-07-21 17:55:36,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2022-07-21 17:55:36,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 93 states have (on average 1.1720430107526882) internal successors, (109), 100 states have internal predecessors, (109), 0 states have call successors, (0), 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 17:55:36,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2022-07-21 17:55:36,366 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 35 [2022-07-21 17:55:36,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:36,366 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2022-07-21 17:55:36,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.588235294117647) internal successors, (81), 51 states have internal predecessors, (81), 0 states have call successors, (0), 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 17:55:36,366 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2022-07-21 17:55:36,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-21 17:55:36,366 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:36,366 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 17:55:36,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-21 17:55:36,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-21 17:55:36,575 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-07-21 17:55:36,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:36,576 INFO L85 PathProgramCache]: Analyzing trace with hash -353475585, now seen corresponding path program 1 times [2022-07-21 17:55:36,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:36,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10055377] [2022-07-21 17:55:36,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:36,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:36,741 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:55:36,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:36,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10055377] [2022-07-21 17:55:36,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10055377] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 17:55:36,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392043262] [2022-07-21 17:55:36,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:36,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:55:36,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 17:55:36,743 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 17:55:36,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-21 17:55:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:36,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 33 conjunts are in the unsatisfiable core [2022-07-21 17:55:36,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:55:36,869 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-21 17:55:36,950 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 17:55:36,950 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2022-07-21 17:55:37,001 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 17:55:37,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 17:55:37,084 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 11 treesize of output 9 [2022-07-21 17:55:37,086 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 20 treesize of output 18 [2022-07-21 17:55:37,094 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 17:55:37,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392043262] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 17:55:37,094 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 17:55:37,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 27 [2022-07-21 17:55:37,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999316373] [2022-07-21 17:55:37,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 17:55:37,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-21 17:55:37,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:37,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-21 17:55:37,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=645, Unknown=0, NotChecked=0, Total=702 [2022-07-21 17:55:37,095 INFO L87 Difference]: Start difference. First operand 101 states and 109 transitions. Second operand has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 27 states have internal predecessors, (61), 0 states have call successors, (0), 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 17:55:37,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:37,807 INFO L93 Difference]: Finished difference Result 107 states and 114 transitions. [2022-07-21 17:55:37,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 17:55:37,808 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 27 states have internal predecessors, (61), 0 states have call successors, (0), 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 17:55:37,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:37,808 INFO L225 Difference]: With dead ends: 107 [2022-07-21 17:55:37,808 INFO L226 Difference]: Without dead ends: 107 [2022-07-21 17:55:37,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=441, Invalid=1629, Unknown=0, NotChecked=0, Total=2070 [2022-07-21 17:55:37,809 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 514 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:37,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 380 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:55:37,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-07-21 17:55:37,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 101. [2022-07-21 17:55:37,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 93 states have (on average 1.1612903225806452) internal successors, (108), 100 states have internal predecessors, (108), 0 states have call successors, (0), 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 17:55:37,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 108 transitions. [2022-07-21 17:55:37,811 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 108 transitions. Word has length 36 [2022-07-21 17:55:37,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:37,811 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 108 transitions. [2022-07-21 17:55:37,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 27 states have internal predecessors, (61), 0 states have call successors, (0), 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 17:55:37,811 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 108 transitions. [2022-07-21 17:55:37,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-21 17:55:37,811 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:37,811 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 17:55:37,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-21 17:55:38,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-21 17:55:38,012 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-07-21 17:55:38,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:38,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1927205463, now seen corresponding path program 1 times [2022-07-21 17:55:38,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:38,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078730203] [2022-07-21 17:55:38,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:38,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:38,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:38,124 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 17:55:38,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:38,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078730203] [2022-07-21 17:55:38,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078730203] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 17:55:38,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281739193] [2022-07-21 17:55:38,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:38,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:55:38,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 17:55:38,126 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 17:55:38,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-21 17:55:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:38,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-21 17:55:38,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:55:38,242 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-21 17:55:38,348 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 17:55:38,348 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-07-21 17:55:38,423 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 17:55:38,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 17:55:38,504 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 10 treesize of output 8 [2022-07-21 17:55:38,507 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 18 treesize of output 16 [2022-07-21 17:55:38,516 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 17:55:38,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281739193] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 17:55:38,516 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 17:55:38,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 21 [2022-07-21 17:55:38,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339941439] [2022-07-21 17:55:38,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 17:55:38,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-21 17:55:38,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:38,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-21 17:55:38,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2022-07-21 17:55:38,518 INFO L87 Difference]: Start difference. First operand 101 states and 108 transitions. Second operand has 22 states, 21 states have (on average 2.619047619047619) internal successors, (55), 22 states have internal predecessors, (55), 0 states have call successors, (0), 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 17:55:38,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:38,938 INFO L93 Difference]: Finished difference Result 103 states and 110 transitions. [2022-07-21 17:55:38,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 17:55:38,938 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.619047619047619) internal successors, (55), 22 states have internal predecessors, (55), 0 states have call successors, (0), 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 37 [2022-07-21 17:55:38,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:38,939 INFO L225 Difference]: With dead ends: 103 [2022-07-21 17:55:38,939 INFO L226 Difference]: Without dead ends: 103 [2022-07-21 17:55:38,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=241, Invalid=815, Unknown=0, NotChecked=0, Total=1056 [2022-07-21 17:55:38,939 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 385 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:38,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 305 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:55:38,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-07-21 17:55:38,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2022-07-21 17:55:38,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 95 states have (on average 1.1578947368421053) internal successors, (110), 102 states have internal predecessors, (110), 0 states have call successors, (0), 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 17:55:38,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 110 transitions. [2022-07-21 17:55:38,941 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 110 transitions. Word has length 37 [2022-07-21 17:55:38,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:38,941 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 110 transitions. [2022-07-21 17:55:38,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.619047619047619) internal successors, (55), 22 states have internal predecessors, (55), 0 states have call successors, (0), 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 17:55:38,941 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 110 transitions. [2022-07-21 17:55:38,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-21 17:55:38,941 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:38,942 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] [2022-07-21 17:55:38,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-21 17:55:39,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-21 17:55:39,142 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-07-21 17:55:39,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:39,143 INFO L85 PathProgramCache]: Analyzing trace with hash -386172672, now seen corresponding path program 1 times [2022-07-21 17:55:39,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:39,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108995667] [2022-07-21 17:55:39,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:39,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:39,239 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 17:55:39,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:39,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108995667] [2022-07-21 17:55:39,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108995667] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 17:55:39,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552733235] [2022-07-21 17:55:39,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:39,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:55:39,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 17:55:39,241 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 17:55:39,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-21 17:55:39,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:39,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 27 conjunts are in the unsatisfiable core [2022-07-21 17:55:39,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:55:39,374 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-21 17:55:39,469 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 17:55:39,470 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2022-07-21 17:55:39,540 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 17:55:39,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 17:55:39,646 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 12 treesize of output 10 [2022-07-21 17:55:39,648 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 22 treesize of output 20 [2022-07-21 17:55:39,664 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 17:55:39,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552733235] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 17:55:39,664 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 17:55:39,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 21 [2022-07-21 17:55:39,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821847212] [2022-07-21 17:55:39,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 17:55:39,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-21 17:55:39,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:39,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-21 17:55:39,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2022-07-21 17:55:39,665 INFO L87 Difference]: Start difference. First operand 103 states and 110 transitions. Second operand has 22 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 22 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 17:55:40,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:40,388 INFO L93 Difference]: Finished difference Result 104 states and 111 transitions. [2022-07-21 17:55:40,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 17:55:40,388 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 22 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 38 [2022-07-21 17:55:40,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:40,389 INFO L225 Difference]: With dead ends: 104 [2022-07-21 17:55:40,389 INFO L226 Difference]: Without dead ends: 104 [2022-07-21 17:55:40,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 62 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=298, Invalid=962, Unknown=0, NotChecked=0, Total=1260 [2022-07-21 17:55:40,389 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 381 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:40,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 193 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:55:40,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-07-21 17:55:40,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2022-07-21 17:55:40,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 96 states have (on average 1.15625) internal successors, (111), 103 states have internal predecessors, (111), 0 states have call successors, (0), 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 17:55:40,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 111 transitions. [2022-07-21 17:55:40,391 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 111 transitions. Word has length 38 [2022-07-21 17:55:40,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:40,391 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 111 transitions. [2022-07-21 17:55:40,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 22 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 17:55:40,391 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 111 transitions. [2022-07-21 17:55:40,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-21 17:55:40,392 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:40,392 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:40,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-07-21 17:55:40,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-21 17:55:40,592 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-07-21 17:55:40,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:40,592 INFO L85 PathProgramCache]: Analyzing trace with hash -728554393, now seen corresponding path program 3 times [2022-07-21 17:55:40,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:40,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397807501] [2022-07-21 17:55:40,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:40,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:40,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:40,704 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-21 17:55:40,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:40,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397807501] [2022-07-21 17:55:40,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397807501] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 17:55:40,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266826609] [2022-07-21 17:55:40,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 17:55:40,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:55:40,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 17:55:40,707 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 17:55:40,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-21 17:55:40,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-21 17:55:40,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 17:55:40,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-21 17:55:40,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:55:40,981 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-21 17:55:40,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 17:55:41,088 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-21 17:55:41,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266826609] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 17:55:41,088 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 17:55:41,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2022-07-21 17:55:41,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086911433] [2022-07-21 17:55:41,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 17:55:41,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-21 17:55:41,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:41,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-21 17:55:41,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-07-21 17:55:41,089 INFO L87 Difference]: Start difference. First operand 104 states and 111 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 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 17:55:41,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:41,240 INFO L93 Difference]: Finished difference Result 234 states and 247 transitions. [2022-07-21 17:55:41,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 17:55:41,241 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 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 38 [2022-07-21 17:55:41,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:41,241 INFO L225 Difference]: With dead ends: 234 [2022-07-21 17:55:41,241 INFO L226 Difference]: Without dead ends: 234 [2022-07-21 17:55:41,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 65 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2022-07-21 17:55:41,242 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 151 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:41,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 589 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:55:41,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-07-21 17:55:41,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 142. [2022-07-21 17:55:41,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 134 states have (on average 1.1492537313432836) internal successors, (154), 141 states have internal predecessors, (154), 0 states have call successors, (0), 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 17:55:41,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 154 transitions. [2022-07-21 17:55:41,245 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 154 transitions. Word has length 38 [2022-07-21 17:55:41,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:41,245 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 154 transitions. [2022-07-21 17:55:41,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 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 17:55:41,245 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 154 transitions. [2022-07-21 17:55:41,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-21 17:55:41,245 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:41,245 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:41,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-21 17:55:41,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:55:41,446 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-07-21 17:55:41,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:41,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1283014744, now seen corresponding path program 3 times [2022-07-21 17:55:41,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:41,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095415216] [2022-07-21 17:55:41,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:41,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:41,489 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-21 17:55:41,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:41,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095415216] [2022-07-21 17:55:41,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095415216] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 17:55:41,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224675229] [2022-07-21 17:55:41,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 17:55:41,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:55:41,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 17:55:41,490 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 17:55:41,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-21 17:55:41,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-07-21 17:55:41,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 17:55:41,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 17:55:41,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:55:41,672 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-21 17:55:41,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 17:55:41,693 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-21 17:55:41,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224675229] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 17:55:41,694 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 17:55:41,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 9 [2022-07-21 17:55:41,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304050536] [2022-07-21 17:55:41,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 17:55:41,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 17:55:41,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:41,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 17:55:41,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:55:41,695 INFO L87 Difference]: Start difference. First operand 142 states and 154 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 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 17:55:41,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:41,746 INFO L93 Difference]: Finished difference Result 184 states and 193 transitions. [2022-07-21 17:55:41,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 17:55:41,747 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 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 39 [2022-07-21 17:55:41,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:41,750 INFO L225 Difference]: With dead ends: 184 [2022-07-21 17:55:41,750 INFO L226 Difference]: Without dead ends: 184 [2022-07-21 17:55:41,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2022-07-21 17:55:41,751 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 230 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:41,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 119 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:55:41,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-07-21 17:55:41,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 126. [2022-07-21 17:55:41,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 118 states have (on average 1.1440677966101696) internal successors, (135), 125 states have internal predecessors, (135), 0 states have call successors, (0), 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 17:55:41,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 135 transitions. [2022-07-21 17:55:41,757 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 135 transitions. Word has length 39 [2022-07-21 17:55:41,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:41,757 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 135 transitions. [2022-07-21 17:55:41,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 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 17:55:41,757 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 135 transitions. [2022-07-21 17:55:41,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-21 17:55:41,758 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:41,758 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:41,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-21 17:55:41,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-07-21 17:55:41,971 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-07-21 17:55:41,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:41,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1747434268, now seen corresponding path program 2 times [2022-07-21 17:55:41,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:41,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273054972] [2022-07-21 17:55:41,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:41,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:42,129 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 17:55:42,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:42,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273054972] [2022-07-21 17:55:42,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273054972] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 17:55:42,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821922443] [2022-07-21 17:55:42,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 17:55:42,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:55:42,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 17:55:42,131 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 17:55:42,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-21 17:55:42,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 17:55:42,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 17:55:42,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 73 conjunts are in the unsatisfiable core [2022-07-21 17:55:42,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:55:42,640 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 17:55:42,641 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 17:55:42,652 INFO L356 Elim1Store]: treesize reduction 21, result has 43.2 percent of original size [2022-07-21 17:55:42,653 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 46 [2022-07-21 17:55:42,656 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 17:55:42,663 INFO L356 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2022-07-21 17:55:42,664 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 16 [2022-07-21 17:55:42,763 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 17:55:42,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 17:55:43,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:55:43,580 INFO L356 Elim1Store]: treesize reduction 8, result has 90.5 percent of original size [2022-07-21 17:55:43,581 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 115 [2022-07-21 17:55:43,607 INFO L356 Elim1Store]: treesize reduction 36, result has 46.3 percent of original size [2022-07-21 17:55:43,607 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 104 treesize of output 98 [2022-07-21 17:55:43,747 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 17:55:43,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821922443] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 17:55:43,747 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 17:55:43,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20, 20] total 43 [2022-07-21 17:55:43,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12032757] [2022-07-21 17:55:43,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 17:55:43,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-07-21 17:55:43,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:43,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-07-21 17:55:43,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1691, Unknown=0, NotChecked=0, Total=1806 [2022-07-21 17:55:43,749 INFO L87 Difference]: Start difference. First operand 126 states and 135 transitions. Second operand has 43 states, 43 states have (on average 1.930232558139535) internal successors, (83), 43 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 17:55:44,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:44,276 INFO L93 Difference]: Finished difference Result 153 states and 161 transitions. [2022-07-21 17:55:44,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 17:55:44,276 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.930232558139535) internal successors, (83), 43 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) Word has length 41 [2022-07-21 17:55:44,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:44,277 INFO L225 Difference]: With dead ends: 153 [2022-07-21 17:55:44,277 INFO L226 Difference]: Without dead ends: 153 [2022-07-21 17:55:44,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=256, Invalid=2714, Unknown=0, NotChecked=0, Total=2970 [2022-07-21 17:55:44,278 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 139 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 161 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:44,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 758 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 538 Invalid, 0 Unknown, 161 Unchecked, 0.2s Time] [2022-07-21 17:55:44,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-07-21 17:55:44,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 149. [2022-07-21 17:55:44,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 141 states have (on average 1.1205673758865249) internal successors, (158), 148 states have internal predecessors, (158), 0 states have call successors, (0), 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 17:55:44,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 158 transitions. [2022-07-21 17:55:44,280 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 158 transitions. Word has length 41 [2022-07-21 17:55:44,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:44,281 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 158 transitions. [2022-07-21 17:55:44,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.930232558139535) internal successors, (83), 43 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 17:55:44,281 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 158 transitions. [2022-07-21 17:55:44,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-21 17:55:44,281 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:44,281 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:44,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-21 17:55:44,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:55:44,494 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-07-21 17:55:44,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:44,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1207000336, now seen corresponding path program 4 times [2022-07-21 17:55:44,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:44,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133919561] [2022-07-21 17:55:44,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:44,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:44,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:44,574 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 17:55:44,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:44,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133919561] [2022-07-21 17:55:44,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133919561] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 17:55:44,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635664041] [2022-07-21 17:55:44,575 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-21 17:55:44,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:55:44,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 17:55:44,577 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 17:55:44,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-21 17:55:44,673 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-21 17:55:44,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 17:55:44,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 17:55:44,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:55:44,707 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 17:55:44,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 17:55:44,739 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 17:55:44,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635664041] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 17:55:44,739 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 17:55:44,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-07-21 17:55:44,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957643959] [2022-07-21 17:55:44,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 17:55:44,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 17:55:44,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:44,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 17:55:44,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 17:55:44,740 INFO L87 Difference]: Start difference. First operand 149 states and 158 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 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 17:55:44,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:44,833 INFO L93 Difference]: Finished difference Result 164 states and 171 transitions. [2022-07-21 17:55:44,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 17:55:44,833 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 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 41 [2022-07-21 17:55:44,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:44,834 INFO L225 Difference]: With dead ends: 164 [2022-07-21 17:55:44,834 INFO L226 Difference]: Without dead ends: 164 [2022-07-21 17:55:44,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-07-21 17:55:44,834 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 125 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:44,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 283 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:55:44,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-07-21 17:55:44,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 137. [2022-07-21 17:55:44,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 129 states have (on average 1.124031007751938) internal successors, (145), 136 states have internal predecessors, (145), 0 states have call successors, (0), 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 17:55:44,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 145 transitions. [2022-07-21 17:55:44,836 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 145 transitions. Word has length 41 [2022-07-21 17:55:44,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:44,836 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 145 transitions. [2022-07-21 17:55:44,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 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 17:55:44,836 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 145 transitions. [2022-07-21 17:55:44,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-21 17:55:44,837 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:44,837 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:44,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-21 17:55:45,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:55:45,046 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-07-21 17:55:45,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:45,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1664113990, now seen corresponding path program 2 times [2022-07-21 17:55:45,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:45,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197638401] [2022-07-21 17:55:45,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:45,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:45,328 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 17:55:45,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:45,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197638401] [2022-07-21 17:55:45,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197638401] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 17:55:45,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664162037] [2022-07-21 17:55:45,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 17:55:45,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:55:45,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 17:55:45,330 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 17:55:45,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-21 17:55:45,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 17:55:45,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 17:55:45,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 46 conjunts are in the unsatisfiable core [2022-07-21 17:55:45,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:55:45,462 INFO L356 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-07-21 17:55:45,463 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 44 [2022-07-21 17:55:45,502 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-21 17:55:45,749 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 17:55:45,750 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 39 [2022-07-21 17:55:46,024 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 17:55:46,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 17:55:46,505 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 20 treesize of output 18 [2022-07-21 17:55:46,508 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 38 treesize of output 36 [2022-07-21 17:55:50,892 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 17:55:50,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664162037] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 17:55:50,892 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 17:55:50,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 37 [2022-07-21 17:55:50,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500561354] [2022-07-21 17:55:50,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 17:55:50,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-07-21 17:55:50,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:55:50,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-07-21 17:55:50,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1308, Unknown=1, NotChecked=0, Total=1406 [2022-07-21 17:55:50,893 INFO L87 Difference]: Start difference. First operand 137 states and 145 transitions. Second operand has 38 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 38 states have internal predecessors, (100), 0 states have call successors, (0), 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 17:55:51,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:55:51,898 INFO L93 Difference]: Finished difference Result 139 states and 146 transitions. [2022-07-21 17:55:51,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 17:55:51,898 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 38 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-07-21 17:55:51,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:55:51,899 INFO L225 Difference]: With dead ends: 139 [2022-07-21 17:55:51,899 INFO L226 Difference]: Without dead ends: 102 [2022-07-21 17:55:51,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=189, Invalid=1880, Unknown=1, NotChecked=0, Total=2070 [2022-07-21 17:55:51,900 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 93 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 293 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:55:51,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 574 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 302 Invalid, 0 Unknown, 293 Unchecked, 0.2s Time] [2022-07-21 17:55:51,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-07-21 17:55:51,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2022-07-21 17:55:51,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 94 states have (on average 1.1595744680851063) internal successors, (109), 101 states have internal predecessors, (109), 0 states have call successors, (0), 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 17:55:51,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 109 transitions. [2022-07-21 17:55:51,901 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 109 transitions. Word has length 42 [2022-07-21 17:55:51,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:55:51,901 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 109 transitions. [2022-07-21 17:55:51,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 38 states have internal predecessors, (100), 0 states have call successors, (0), 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 17:55:51,901 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 109 transitions. [2022-07-21 17:55:51,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-21 17:55:51,901 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:55:51,902 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:55:51,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-07-21 17:55:52,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:55:52,102 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-07-21 17:55:52,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:55:52,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1155669199, now seen corresponding path program 4 times [2022-07-21 17:55:52,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:55:52,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263444607] [2022-07-21 17:55:52,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:55:52,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:55:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:55:52,438 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 35 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 17:55:52,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:55:52,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263444607] [2022-07-21 17:55:52,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263444607] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 17:55:52,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887940202] [2022-07-21 17:55:52,439 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-21 17:55:52,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 17:55:52,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 17:55:52,448 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 17:55:52,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-21 17:55:52,587 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-21 17:55:52,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 17:55:52,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 89 conjunts are in the unsatisfiable core [2022-07-21 17:55:52,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:55:52,593 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 17:55:52,608 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-21 17:55:52,609 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 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-21 17:55:52,645 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-21 17:55:52,725 INFO L356 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2022-07-21 17:55:52,725 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2022-07-21 17:55:52,775 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-21 17:55:52,779 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 37 treesize of output 28 [2022-07-21 17:55:52,861 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 17:55:52,890 INFO L356 Elim1Store]: treesize reduction 72, result has 37.4 percent of original size [2022-07-21 17:55:52,890 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 57 [2022-07-21 17:55:52,976 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-07-21 17:55:52,976 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 55 [2022-07-21 17:55:52,987 INFO L356 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-07-21 17:55:52,987 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-21 17:55:53,362 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-21 17:55:53,881 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 17:55:53,883 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 17:55:53,888 INFO L356 Elim1Store]: treesize reduction 34, result has 8.1 percent of original size [2022-07-21 17:55:53,888 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 49 treesize of output 27 [2022-07-21 17:55:54,328 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 17:55:54,356 INFO L356 Elim1Store]: treesize reduction 49, result has 39.5 percent of original size [2022-07-21 17:55:54,356 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 14 case distinctions, treesize of input 81 treesize of output 73 [2022-07-21 17:55:55,080 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 35 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 17:55:55,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 17:55:57,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:55:57,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:55:57,688 INFO L356 Elim1Store]: treesize reduction 56, result has 12.5 percent of original size [2022-07-21 17:55:57,689 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 1214 treesize of output 989 [2022-07-21 17:55:57,699 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 17:55:57,700 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 978 treesize of output 940 [2022-07-21 17:55:57,761 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 6 treesize of output 4 [2022-07-21 17:55:57,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:55:57,773 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 318 treesize of output 316 [2022-07-21 17:56:00,502 INFO L356 Elim1Store]: treesize reduction 244, result has 29.9 percent of original size [2022-07-21 17:56:00,503 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 17 case distinctions, treesize of input 75627 treesize of output 27185 [2022-07-21 17:56:01,007 INFO L356 Elim1Store]: treesize reduction 24, result has 70.4 percent of original size [2022-07-21 17:56:01,008 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 17018 treesize of output 14884 [2022-07-21 17:56:01,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:02,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:02,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:02,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:03,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:03,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:07,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:07,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:07,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:09,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:09,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:10,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:10,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:12,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:12,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:13,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:13,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:14,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:14,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:16,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:16,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:17,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:18,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:18,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:19,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:19,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:21,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:22,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:23,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:25,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:25,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:26,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:26,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:28,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:28,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:29,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:30,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:31,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:31,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:32,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:32,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:32,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:34,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:34,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:34,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:35,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:36,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:37,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:37,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:37,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:38,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:38,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:39,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:39,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:40,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:40,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:40,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:40,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:40,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:41,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:41,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:44,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:45,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:48,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:52,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:52,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:53,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:53,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:53,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:54,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:58,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:59,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:56:59,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:00,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:02,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:02,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:02,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:03,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:03,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:03,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:03,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:03,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:04,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:04,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:04,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:05,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:05,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:06,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:06,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:06,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:07,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:07,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:08,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:08,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:08,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:08,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:08,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:11,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:11,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:11,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:12,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:12,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:12,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:13,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:13,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:13,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:15,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:15,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:15,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:17,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:17,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:17,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:17,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:19,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:19,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:20,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:21,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:21,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:21,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:22,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:23,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:24,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:24,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:24,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:24,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:26,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:26,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:27,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:28,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:28,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:28,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:28,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:30,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:30,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:30,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:31,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:32,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:32,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:32,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:34,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:34,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:35,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:35,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:36,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:36,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:37,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:37,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:39,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:39,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:39,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:39,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:41,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:41,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:42,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:42,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:43,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:43,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:44,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:44,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:46,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:46,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:46,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:46,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:48,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:48,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:48,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:49,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:49,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:49,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:50,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:50,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:50,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:51,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:52,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:53,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:53,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:57,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:57,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:58,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:58,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:58,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:57:59,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:00,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:00,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:01,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:02,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:02,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:02,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:04,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:04,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:06,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:06,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:06,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:06,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:07,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:08,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:09,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:09,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:09,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:09,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:12,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:12,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:13,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:13,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:13,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:14,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:15,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:15,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:16,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:16,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:17,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:17,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:19,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:19,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:21,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:21,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:21,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:21,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:23,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:23,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:24,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:25,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:25,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:25,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:26,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:27,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:28,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:28,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:28,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:28,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:30,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:30,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:31,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:33,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:33,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:33,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:34,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:34,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:34,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:35,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:35,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:35,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:35,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:36,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:36,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:37,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:37,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:37,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:38,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:38,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:38,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:39,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:39,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:39,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:42,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:42,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:42,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:43,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:43,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:44,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:44,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:45,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:45,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:46,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:47,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:47,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:48,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:49,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:50,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:50,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:50,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:51,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:51,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:51,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:51,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:52,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:52,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:52,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:52,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:53,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:53,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:54,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:54,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:54,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:55,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:55,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:56,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:56,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:56,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:56,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:59,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:59,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:58:59,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:59:00,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:59:00,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:59:00,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:59:01,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:59:01,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:59:01,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:59:03,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:59:03,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:59:03,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:59:04,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:59:04,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:59:05,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:59:05,365 INFO L190 IndexEqualityManager]: detected not equals via solver