/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/array-cav19/array_tiling_tcpy.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 20:57:19,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 20:57:19,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 20:57:19,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 20:57:19,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 20:57:19,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 20:57:19,752 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 20:57:19,755 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 20:57:19,756 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 20:57:19,761 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 20:57:19,762 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 20:57:19,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 20:57:19,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 20:57:19,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 20:57:19,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 20:57:19,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 20:57:19,769 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 20:57:19,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 20:57:19,772 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 20:57:19,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 20:57:19,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 20:57:19,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 20:57:19,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 20:57:19,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 20:57:19,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 20:57:19,789 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 20:57:19,789 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 20:57:19,791 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 20:57:19,791 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 20:57:19,792 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 20:57:19,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 20:57:19,793 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 20:57:19,794 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 20:57:19,795 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 20:57:19,796 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 20:57:19,796 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 20:57:19,797 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 20:57:19,797 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 20:57:19,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 20:57:19,798 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 20:57:19,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 20:57:19,800 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-03-31 20:57:19,834 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 20:57:19,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 20:57:19,835 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 20:57:19,835 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 20:57:19,836 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 20:57:19,836 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 20:57:19,836 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 20:57:19,836 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 20:57:19,837 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 20:57:19,837 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 20:57:19,837 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 20:57:19,838 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 20:57:19,838 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 20:57:19,838 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 20:57:19,838 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 20:57:19,838 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 20:57:19,838 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 20:57:19,838 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 20:57:19,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 20:57:19,839 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 20:57:19,839 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 20:57:19,839 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 20:57:19,839 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 20:57:19,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 20:57:19,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 20:57:19,840 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 20:57:19,840 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 20:57:19,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 20:57:19,840 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 20:57:19,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 20:57:19,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 20:57:19,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 20:57:19,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 20:57:19,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 20:57:19,841 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 20:57:19,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 20:57:19,841 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 20:57:19,841 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 20:57:19,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 20:57:19,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 20:57:19,842 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 20:57:19,842 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 20:57:20,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 20:57:20,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 20:57:20,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 20:57:20,115 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 20:57:20,116 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 20:57:20,117 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-cav19/array_tiling_tcpy.c [2023-03-31 20:57:21,318 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 20:57:21,522 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 20:57:21,523 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-cav19/array_tiling_tcpy.c [2023-03-31 20:57:21,529 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75f7e3350/4271b91ec6804a06908759d66060a60b/FLAG4e03482f4 [2023-03-31 20:57:21,541 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75f7e3350/4271b91ec6804a06908759d66060a60b [2023-03-31 20:57:21,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 20:57:21,546 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 20:57:21,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 20:57:21,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 20:57:21,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 20:57:21,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 08:57:21" (1/1) ... [2023-03-31 20:57:21,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6463652a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 08:57:21, skipping insertion in model container [2023-03-31 20:57:21,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 08:57:21" (1/1) ... [2023-03-31 20:57:21,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 20:57:21,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 20:57:21,688 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-cav19/array_tiling_tcpy.c[408,421] [2023-03-31 20:57:21,705 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 20:57:21,715 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 20:57:21,725 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-cav19/array_tiling_tcpy.c[408,421] [2023-03-31 20:57:21,735 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 20:57:21,746 INFO L208 MainTranslator]: Completed translation [2023-03-31 20:57:21,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 08:57:21 WrapperNode [2023-03-31 20:57:21,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 20:57:21,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 20:57:21,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 20:57:21,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 20:57:21,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 08:57:21" (1/1) ... [2023-03-31 20:57:21,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 08:57:21" (1/1) ... [2023-03-31 20:57:21,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 08:57:21" (1/1) ... [2023-03-31 20:57:21,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 08:57:21" (1/1) ... [2023-03-31 20:57:21,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 08:57:21" (1/1) ... [2023-03-31 20:57:21,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 08:57:21" (1/1) ... [2023-03-31 20:57:21,788 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 08:57:21" (1/1) ... [2023-03-31 20:57:21,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 08:57:21" (1/1) ... [2023-03-31 20:57:21,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 20:57:21,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 20:57:21,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 20:57:21,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 20:57:21,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 08:57:21" (1/1) ... [2023-03-31 20:57:21,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 20:57:21,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 20:57:21,864 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) [2023-03-31 20:57:21,887 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 [2023-03-31 20:57:21,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 20:57:21,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 20:57:21,903 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 20:57:21,904 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 20:57:21,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-03-31 20:57:21,904 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 20:57:21,905 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 20:57:21,905 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 20:57:21,905 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 20:57:21,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 20:57:21,905 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 20:57:21,905 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-03-31 20:57:21,905 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 20:57:21,905 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 20:57:21,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-03-31 20:57:21,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 20:57:21,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 20:57:21,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 20:57:21,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 20:57:21,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 20:57:21,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 20:57:21,979 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 20:57:21,981 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 20:57:22,114 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 20:57:22,146 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 20:57:22,147 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-03-31 20:57:22,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 08:57:22 BoogieIcfgContainer [2023-03-31 20:57:22,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 20:57:22,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 20:57:22,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 20:57:22,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 20:57:22,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 08:57:21" (1/3) ... [2023-03-31 20:57:22,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@104e7a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 08:57:22, skipping insertion in model container [2023-03-31 20:57:22,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 08:57:21" (2/3) ... [2023-03-31 20:57:22,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@104e7a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 08:57:22, skipping insertion in model container [2023-03-31 20:57:22,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 08:57:22" (3/3) ... [2023-03-31 20:57:22,162 INFO L112 eAbstractionObserver]: Analyzing ICFG array_tiling_tcpy.c [2023-03-31 20:57:22,178 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 20:57:22,178 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 20:57:22,238 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 20:57:22,245 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@33e34427, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 20:57:22,246 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 20:57:22,250 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-03-31 20:57:22,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-03-31 20:57:22,256 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 20:57:22,257 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 20:57:22,258 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 20:57:22,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 20:57:22,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1798892915, now seen corresponding path program 1 times [2023-03-31 20:57:22,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 20:57:22,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664073178] [2023-03-31 20:57:22,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 20:57:22,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 20:57:22,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 20:57:22,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-03-31 20:57:22,687 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 20:57:22,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664073178] [2023-03-31 20:57:22,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664073178] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 20:57:22,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 20:57:22,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 20:57:22,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779615431] [2023-03-31 20:57:22,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 20:57:22,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 20:57:22,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 20:57:22,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 20:57:22,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-03-31 20:57:22,745 INFO L87 Difference]: Start difference. First operand has 23 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-31 20:57:22,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 20:57:22,839 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2023-03-31 20:57:22,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 20:57:22,843 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 18 [2023-03-31 20:57:22,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 20:57:22,849 INFO L225 Difference]: With dead ends: 41 [2023-03-31 20:57:22,849 INFO L226 Difference]: Without dead ends: 24 [2023-03-31 20:57:22,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-03-31 20:57:22,858 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 20:57:22,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 48 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 20:57:22,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-03-31 20:57:22,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2023-03-31 20:57:22,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-31 20:57:22,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2023-03-31 20:57:22,898 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 18 [2023-03-31 20:57:22,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 20:57:22,900 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2023-03-31 20:57:22,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-31 20:57:22,900 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2023-03-31 20:57:22,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-03-31 20:57:22,903 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 20:57:22,903 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 20:57:22,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 20:57:22,904 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 20:57:22,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 20:57:22,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1989604388, now seen corresponding path program 1 times [2023-03-31 20:57:22,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 20:57:22,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437857397] [2023-03-31 20:57:22,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 20:57:22,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 20:57:22,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 20:57:23,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-31 20:57:23,185 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 20:57:23,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437857397] [2023-03-31 20:57:23,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437857397] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 20:57:23,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361113189] [2023-03-31 20:57:23,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 20:57:23,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 20:57:23,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 20:57:23,189 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) [2023-03-31 20:57:23,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 20:57:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 20:57:23,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2023-03-31 20:57:23,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 20:57:23,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-31 20:57:23,367 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 20:57:23,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-31 20:57:23,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361113189] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 20:57:23,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2136858777] [2023-03-31 20:57:23,525 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2023-03-31 20:57:23,526 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 20:57:23,535 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 20:57:23,539 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 20:57:23,541 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 20:57:23,624 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 17 for LOIs [2023-03-31 20:57:23,844 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 28 for LOIs [2023-03-31 20:57:23,869 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 8 for LOIs [2023-03-31 20:57:23,876 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 20:57:23,886 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 20:57:24,326 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '243#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (exists ((|v_main_~#acopy~0.base_BEFORE_CALL_1| Int) (|v_main_~#a~0.base_BEFORE_CALL_1| Int)) (and (<= 0 |v_main_~#a~0.base_BEFORE_CALL_1|) (<= 0 |v_main_~#acopy~0.base_BEFORE_CALL_1|) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1|) 0) (select (select |#memory_int| |v_main_~#acopy~0.base_BEFORE_CALL_1|) 0))))) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2023-03-31 20:57:24,326 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 20:57:24,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 20:57:24,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-03-31 20:57:24,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996525223] [2023-03-31 20:57:24,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 20:57:24,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 20:57:24,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 20:57:24,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 20:57:24,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2023-03-31 20:57:24,333 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-03-31 20:57:24,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 20:57:24,415 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2023-03-31 20:57:24,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 20:57:24,415 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2023-03-31 20:57:24,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 20:57:24,416 INFO L225 Difference]: With dead ends: 37 [2023-03-31 20:57:24,416 INFO L226 Difference]: Without dead ends: 28 [2023-03-31 20:57:24,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2023-03-31 20:57:24,418 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 8 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 20:57:24,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 78 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 20:57:24,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-03-31 20:57:24,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2023-03-31 20:57:24,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-31 20:57:24,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2023-03-31 20:57:24,424 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 19 [2023-03-31 20:57:24,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 20:57:24,424 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2023-03-31 20:57:24,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-03-31 20:57:24,424 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2023-03-31 20:57:24,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-03-31 20:57:24,425 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 20:57:24,425 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 20:57:24,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-03-31 20:57:24,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 20:57:24,641 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 20:57:24,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 20:57:24,642 INFO L85 PathProgramCache]: Analyzing trace with hash -826063507, now seen corresponding path program 2 times [2023-03-31 20:57:24,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 20:57:24,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96269049] [2023-03-31 20:57:24,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 20:57:24,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 20:57:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 20:57:25,134 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-03-31 20:57:25,135 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 20:57:25,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96269049] [2023-03-31 20:57:25,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96269049] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 20:57:25,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312080178] [2023-03-31 20:57:25,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-03-31 20:57:25,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 20:57:25,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 20:57:25,137 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) [2023-03-31 20:57:25,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 20:57:25,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-03-31 20:57:25,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 20:57:25,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 37 conjunts are in the unsatisfiable core [2023-03-31 20:57:25,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 20:57:25,256 INFO L350 Elim1Store]: Elim1 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 [2023-03-31 20:57:25,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:25,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 26 [2023-03-31 20:57:25,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:25,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:25,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 41 [2023-03-31 20:57:25,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2023-03-31 20:57:25,424 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-31 20:57:25,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 20:57:25,565 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 20:57:25,566 INFO L350 Elim1Store]: Elim1 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 65918 treesize of output 63142 [2023-03-31 20:57:26,048 INFO L350 Elim1Store]: Elim1 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 1160 treesize of output 1052 [2023-03-31 20:57:29,581 INFO L350 Elim1Store]: Elim1 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 47405 treesize of output 47017 [2023-03-31 20:57:29,804 INFO L350 Elim1Store]: Elim1 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 234 treesize of output 206 [2023-03-31 20:57:29,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 29920 treesize of output 29660 [2023-03-31 20:57:30,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 234 treesize of output 206 [2023-03-31 20:57:30,169 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:30,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 967 treesize of output 951 [2023-03-31 20:57:30,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 72 [2023-03-31 20:57:30,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 31268 treesize of output 31008 [2023-03-31 20:57:30,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 234 treesize of output 206 [2023-03-31 20:57:30,546 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:30,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1066 treesize of output 1048 [2023-03-31 20:57:30,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 98 treesize of output 86 [2023-03-31 20:57:30,593 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:30,598 INFO L350 Elim1Store]: Elim1 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 1066 treesize of output 1048 [2023-03-31 20:57:30,623 INFO L350 Elim1Store]: Elim1 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 98 treesize of output 86 [2023-03-31 20:57:30,642 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:30,648 INFO L350 Elim1Store]: Elim1 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 1607 treesize of output 1581 [2023-03-31 20:57:30,678 INFO L350 Elim1Store]: Elim1 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 98 treesize of output 86 [2023-03-31 20:57:30,698 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:30,707 INFO L350 Elim1Store]: Elim1 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 1363 treesize of output 1339 [2023-03-31 20:57:30,747 INFO L350 Elim1Store]: Elim1 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 82 treesize of output 72 [2023-03-31 20:57:30,770 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:30,775 INFO L350 Elim1Store]: Elim1 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 2099 treesize of output 2065 [2023-03-31 20:57:30,812 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-03-31 20:57:30,815 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:30,821 INFO L350 Elim1Store]: Elim1 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 1784 treesize of output 1752 [2023-03-31 20:57:30,853 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-03-31 20:57:30,877 INFO L350 Elim1Store]: Elim1 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 64498 treesize of output 63982 [2023-03-31 20:57:31,079 INFO L350 Elim1Store]: Elim1 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 234 treesize of output 206 [2023-03-31 20:57:31,222 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,223 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,228 INFO L350 Elim1Store]: Elim1 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 161 treesize of output 155 [2023-03-31 20:57:31,238 INFO L350 Elim1Store]: Elim1 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 39 treesize of output 33 [2023-03-31 20:57:31,271 INFO L350 Elim1Store]: Elim1 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 30876 treesize of output 30616 [2023-03-31 20:57:31,372 INFO L350 Elim1Store]: Elim1 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 234 treesize of output 206 [2023-03-31 20:57:31,544 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,550 INFO L350 Elim1Store]: Elim1 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 1558 treesize of output 1532 [2023-03-31 20:57:31,572 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-03-31 20:57:31,582 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,587 INFO L350 Elim1Store]: Elim1 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 1558 treesize of output 1532 [2023-03-31 20:57:31,616 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-03-31 20:57:31,621 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,622 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 200 treesize of output 192 [2023-03-31 20:57:31,635 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-03-31 20:57:31,642 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,643 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,647 INFO L350 Elim1Store]: Elim1 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 243 treesize of output 233 [2023-03-31 20:57:31,664 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-03-31 20:57:31,672 INFO L350 Elim1Store]: Elim1 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 554 treesize of output 550 [2023-03-31 20:57:31,693 INFO L350 Elim1Store]: Elim1 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 234 treesize of output 206 [2023-03-31 20:57:31,808 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,809 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,817 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,820 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,825 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,827 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,833 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,834 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,838 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,843 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,848 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,849 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,855 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,856 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,863 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,864 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,868 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,869 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,879 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,880 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,884 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,885 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,889 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,889 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,894 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,895 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,899 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,900 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,905 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,906 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,911 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,912 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:31,977 INFO L350 Elim1Store]: Elim1 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 1284 treesize of output 1272 [2023-03-31 20:57:32,126 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:32,131 INFO L350 Elim1Store]: Elim1 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 427 treesize of output 419 [2023-03-31 20:57:32,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 891 treesize of output 883 [2023-03-31 20:57:32,461 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-03-31 20:57:32,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1420 treesize of output 1347 [2023-03-31 20:57:32,860 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:32,862 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:32,872 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-03-31 20:57:32,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 130 [2023-03-31 20:57:32,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:32,915 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:32,916 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:32,921 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:32,921 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:32,922 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:32,932 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-03-31 20:57:32,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 27 [2023-03-31 20:57:32,951 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:32,952 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:32,962 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-03-31 20:57:32,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 126 [2023-03-31 20:57:33,002 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:33,003 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:33,014 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-03-31 20:57:33,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 251 treesize of output 230 [2023-03-31 20:57:33,047 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:33,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:33,048 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:33,049 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:33,055 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:33,055 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:33,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 132 [2023-03-31 20:57:33,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:33,088 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:33,089 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:33,097 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:33,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:33,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 987 treesize of output 931 [2023-03-31 20:57:33,247 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:33,250 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:33,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:33,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 347 treesize of output 311 [2023-03-31 20:57:33,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:33,267 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:33,267 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:33,274 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:33,274 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:33,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:33,281 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:33,282 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:33,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:33,291 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:33,292 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:33,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:33,305 INFO L350 Elim1Store]: Elim1 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 402 treesize of output 398 [2023-03-31 20:57:33,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:33,370 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:33,370 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:33,373 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:33,374 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:33,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:33,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 108 [2023-03-31 20:57:33,401 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:33,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:33,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 795 treesize of output 739 [2023-03-31 20:57:33,471 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:33,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:33,472 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:33,472 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:33,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:33,484 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 2270 treesize of output 2178 [2023-03-31 20:57:34,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:34,451 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:34,451 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:34,457 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:34,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:34,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1035 treesize of output 979 [2023-03-31 20:57:34,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:34,558 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:34,558 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:34,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:34,563 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:34,563 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:34,570 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:34,570 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:34,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:34,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 132 [2023-03-31 20:57:34,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:34,610 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:34,610 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:34,615 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:34,615 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:34,616 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:34,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:34,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 1 [2023-03-31 20:57:34,626 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:34,626 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:34,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:34,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 132 [2023-03-31 20:57:34,647 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:34,647 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:34,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:34,656 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:34,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:34,658 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:34,660 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:34,664 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:34,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:34,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 877 treesize of output 821 [2023-03-31 20:57:34,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:34,929 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:34,930 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:34,957 INFO L321 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-03-31 20:57:34,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2024 treesize of output 1 [2023-03-31 20:57:34,965 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:34,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:34,966 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:34,967 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:34,971 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:34,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:34,972 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:34,973 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:34,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:34,977 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-03-31 20:57:34,987 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:34,987 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:34,998 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-03-31 20:57:34,998 INFO L350 Elim1Store]: Elim1 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 264 treesize of output 1 [2023-03-31 20:57:35,002 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,004 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,008 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,014 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-03-31 20:57:35,015 INFO L350 Elim1Store]: Elim1 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 93 treesize of output 1 [2023-03-31 20:57:35,021 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,036 INFO L321 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-03-31 20:57:35,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 753 treesize of output 1 [2023-03-31 20:57:35,045 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,046 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,057 INFO L321 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-03-31 20:57:35,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 132 treesize of output 1 [2023-03-31 20:57:35,067 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,068 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,078 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-03-31 20:57:35,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 213 treesize of output 1 [2023-03-31 20:57:35,088 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:35,090 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,090 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,096 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,110 INFO L321 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-03-31 20:57:35,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 685 treesize of output 1 [2023-03-31 20:57:35,128 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,129 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,138 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-03-31 20:57:35,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 213 treesize of output 1 [2023-03-31 20:57:35,148 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,150 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,154 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,158 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-03-31 20:57:35,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 170 treesize of output 1 [2023-03-31 20:57:35,166 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,167 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,168 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,171 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,175 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-03-31 20:57:35,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 1 [2023-03-31 20:57:35,184 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,184 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,192 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-03-31 20:57:35,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 119 treesize of output 1 [2023-03-31 20:57:35,197 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,197 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,201 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,205 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-03-31 20:57:35,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 119 treesize of output 1 [2023-03-31 20:57:35,213 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,213 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,224 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-03-31 20:57:35,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 170 treesize of output 1 [2023-03-31 20:57:35,230 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,234 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,239 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-03-31 20:57:35,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 620 treesize of output 1 [2023-03-31 20:57:35,246 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,248 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,252 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,256 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-03-31 20:57:35,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 170 treesize of output 1 [2023-03-31 20:57:35,264 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,266 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,269 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,275 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-03-31 20:57:35,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 283 treesize of output 1 [2023-03-31 20:57:35,280 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,291 INFO L321 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-03-31 20:57:35,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 861 treesize of output 1 [2023-03-31 20:57:35,295 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,297 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,305 INFO L321 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-03-31 20:57:35,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 283 treesize of output 1 [2023-03-31 20:57:35,313 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:35,314 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,314 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,325 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,326 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,337 INFO L321 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-03-31 20:57:35,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 162 treesize of output 1 [2023-03-31 20:57:35,346 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:35,347 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,348 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,353 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,354 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,355 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,365 INFO L321 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-03-31 20:57:35,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2023-03-31 20:57:35,372 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,373 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,383 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-03-31 20:57:35,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 162 treesize of output 1 [2023-03-31 20:57:35,389 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,392 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,397 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,404 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-03-31 20:57:35,404 INFO L350 Elim1Store]: Elim1 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 291 treesize of output 1 [2023-03-31 20:57:35,410 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,412 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,416 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,424 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-03-31 20:57:35,424 INFO L350 Elim1Store]: Elim1 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 404 treesize of output 1 [2023-03-31 20:57:35,434 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,436 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,440 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,445 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-03-31 20:57:35,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 93 treesize of output 1 [2023-03-31 20:57:35,454 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,454 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,468 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-03-31 20:57:35,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 170 treesize of output 1 [2023-03-31 20:57:35,475 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,482 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,489 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-03-31 20:57:35,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 492 treesize of output 1 [2023-03-31 20:57:35,502 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,511 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-03-31 20:57:35,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 1575 treesize of output 1 [2023-03-31 20:57:35,516 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,524 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,530 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-03-31 20:57:35,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 536 treesize of output 1 [2023-03-31 20:57:35,538 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,539 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,554 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-03-31 20:57:35,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 221 treesize of output 1 [2023-03-31 20:57:35,565 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,566 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:35,576 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-03-31 20:57:35,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 170 treesize of output 1 [2023-03-31 20:57:35,887 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-03-31 20:57:35,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312080178] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 20:57:35,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1567268072] [2023-03-31 20:57:35,890 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2023-03-31 20:57:35,890 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 20:57:35,890 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 20:57:35,890 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 20:57:35,890 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 20:57:35,908 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 17 for LOIs [2023-03-31 20:57:35,972 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 28 for LOIs [2023-03-31 20:57:35,983 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 8 for LOIs [2023-03-31 20:57:35,984 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 20:57:35,987 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 20:57:36,438 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '485#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_2| Int) (|v_main_~#acopy~0.base_BEFORE_CALL_2| Int)) (and (<= 0 |v_main_~#acopy~0.base_BEFORE_CALL_2|) (<= 0 |v_main_~#a~0.base_BEFORE_CALL_2|) (not (= (select (select |#memory_int| |v_main_~#acopy~0.base_BEFORE_CALL_2|) 0) (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_2|) 0))))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2023-03-31 20:57:36,438 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 20:57:36,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 20:57:36,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 19 [2023-03-31 20:57:36,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346343527] [2023-03-31 20:57:36,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 20:57:36,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-03-31 20:57:36,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 20:57:36,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-03-31 20:57:36,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=946, Unknown=0, NotChecked=0, Total=1056 [2023-03-31 20:57:36,440 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 19 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-03-31 20:57:36,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 20:57:36,616 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2023-03-31 20:57:36,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-03-31 20:57:36,617 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 20 [2023-03-31 20:57:36,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 20:57:36,617 INFO L225 Difference]: With dead ends: 31 [2023-03-31 20:57:36,617 INFO L226 Difference]: Without dead ends: 29 [2023-03-31 20:57:36,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=138, Invalid=1122, Unknown=0, NotChecked=0, Total=1260 [2023-03-31 20:57:36,619 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 28 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 20:57:36,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 108 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 20:57:36,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-03-31 20:57:36,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2023-03-31 20:57:36,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-03-31 20:57:36,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2023-03-31 20:57:36,625 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 20 [2023-03-31 20:57:36,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 20:57:36,625 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2023-03-31 20:57:36,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-03-31 20:57:36,625 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2023-03-31 20:57:36,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-03-31 20:57:36,626 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 20:57:36,626 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 20:57:36,632 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-03-31 20:57:36,832 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,SelfDestructingSolverStorable2 [2023-03-31 20:57:36,833 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 20:57:36,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 20:57:36,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1673614559, now seen corresponding path program 1 times [2023-03-31 20:57:36,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 20:57:36,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130365836] [2023-03-31 20:57:36,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 20:57:36,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 20:57:36,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 20:57:37,290 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-03-31 20:57:37,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 20:57:37,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130365836] [2023-03-31 20:57:37,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130365836] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 20:57:37,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293668853] [2023-03-31 20:57:37,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 20:57:37,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 20:57:37,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 20:57:37,292 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) [2023-03-31 20:57:37,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-31 20:57:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 20:57:37,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 38 conjunts are in the unsatisfiable core [2023-03-31 20:57:37,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 20:57:37,398 INFO L350 Elim1Store]: Elim1 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 [2023-03-31 20:57:37,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:37,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 26 [2023-03-31 20:57:39,582 WARN L861 $PredicateComparison]: unable to prove that (exists ((|v_main_~#a~0.base_BEFORE_CALL_3| Int) (|v_main_~#acopy~0.base_BEFORE_CALL_3| Int)) (and (not (= |v_main_~#acopy~0.base_BEFORE_CALL_3| |v_main_~#a~0.base_BEFORE_CALL_3|)) (= (select (select |c_#memory_int| |v_main_~#acopy~0.base_BEFORE_CALL_3|) 4) (select (select |c_#memory_int| |v_main_~#a~0.base_BEFORE_CALL_3|) 4)))) is different from true [2023-03-31 20:57:39,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2023-03-31 20:57:39,699 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2023-03-31 20:57:39,700 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 20:57:39,772 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 20:57:39,773 INFO L350 Elim1Store]: Elim1 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 448 treesize of output 424 [2023-03-31 20:57:39,781 INFO L350 Elim1Store]: Elim1 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 273 treesize of output 237 [2023-03-31 20:57:39,827 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-03-31 20:57:39,827 INFO L350 Elim1Store]: Elim1 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 35 treesize of output 29 [2023-03-31 20:57:39,857 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 20:57:39,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 676 treesize of output 610 [2023-03-31 20:57:40,412 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-03-31 20:57:40,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293668853] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 20:57:40,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [591206945] [2023-03-31 20:57:40,415 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2023-03-31 20:57:40,415 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 20:57:40,415 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 20:57:40,415 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 20:57:40,415 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 20:57:40,433 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 17 for LOIs [2023-03-31 20:57:40,599 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 48 for LOIs [2023-03-31 20:57:40,642 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 8 for LOIs [2023-03-31 20:57:40,643 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 20:57:40,646 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 20:57:41,529 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '780#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (exists ((v_main_~S~0_BEFORE_CALL_32 Int) (|v_main_~#a~0.offset_BEFORE_CALL_11| Int) (|v_main_~#acopy~0.offset_BEFORE_CALL_11| Int) (v_main_~i~0_BEFORE_CALL_11 Int) (|v_main_~#acopy~0.base_BEFORE_CALL_11| Int) (|v_main_~#a~0.base_BEFORE_CALL_11| Int)) (and (< v_main_~i~0_BEFORE_CALL_11 (* v_main_~S~0_BEFORE_CALL_32 2)) (or (and (<= 0 |v_main_~#a~0.base_BEFORE_CALL_11|) (<= 1 v_main_~i~0_BEFORE_CALL_11) (<= v_main_~S~0_BEFORE_CALL_32 1073741823) (<= 0 |v_main_~#acopy~0.base_BEFORE_CALL_11|) (<= 1 v_main_~S~0_BEFORE_CALL_32) (= |v_main_~#a~0.offset_BEFORE_CALL_11| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |v_main_~#acopy~0.offset_BEFORE_CALL_11| 0) (= |#NULL.base| 0)) (and (= v_main_~i~0_BEFORE_CALL_11 0) (<= 0 |v_main_~#a~0.base_BEFORE_CALL_11|) (<= v_main_~S~0_BEFORE_CALL_32 1073741823) (<= 0 |v_main_~#acopy~0.base_BEFORE_CALL_11|) (<= 1 v_main_~S~0_BEFORE_CALL_32) (= |v_main_~#a~0.offset_BEFORE_CALL_11| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |v_main_~#acopy~0.offset_BEFORE_CALL_11| 0) (= |#NULL.base| 0))) (not (= (select (select |#memory_int| |v_main_~#acopy~0.base_BEFORE_CALL_11|) (+ |v_main_~#acopy~0.offset_BEFORE_CALL_11| (* v_main_~i~0_BEFORE_CALL_11 4))) (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_11|) (+ |v_main_~#a~0.offset_BEFORE_CALL_11| (* v_main_~i~0_BEFORE_CALL_11 4))))))))' at error location [2023-03-31 20:57:41,529 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 20:57:41,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 20:57:41,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 10] total 25 [2023-03-31 20:57:41,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876929298] [2023-03-31 20:57:41,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 20:57:41,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-03-31 20:57:41,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 20:57:41,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-03-31 20:57:41,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1273, Unknown=1, NotChecked=72, Total=1482 [2023-03-31 20:57:41,532 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 25 states, 23 states have (on average 1.565217391304348) internal successors, (36), 22 states have internal predecessors, (36), 6 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-03-31 20:57:41,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 20:57:41,760 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2023-03-31 20:57:41,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-03-31 20:57:41,761 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 1.565217391304348) internal successors, (36), 22 states have internal predecessors, (36), 6 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 27 [2023-03-31 20:57:41,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 20:57:41,761 INFO L225 Difference]: With dead ends: 38 [2023-03-31 20:57:41,762 INFO L226 Difference]: Without dead ends: 36 [2023-03-31 20:57:41,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=173, Invalid=1552, Unknown=1, NotChecked=80, Total=1806 [2023-03-31 20:57:41,763 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 19 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 115 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 20:57:41,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 134 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 256 Invalid, 0 Unknown, 115 Unchecked, 0.2s Time] [2023-03-31 20:57:41,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-03-31 20:57:41,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2023-03-31 20:57:41,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-03-31 20:57:41,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2023-03-31 20:57:41,770 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 27 [2023-03-31 20:57:41,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 20:57:41,770 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2023-03-31 20:57:41,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 1.565217391304348) internal successors, (36), 22 states have internal predecessors, (36), 6 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-03-31 20:57:41,771 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2023-03-31 20:57:41,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-03-31 20:57:41,771 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 20:57:41,771 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 20:57:41,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-31 20:57:41,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 20:57:41,978 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 20:57:41,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 20:57:41,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1620364563, now seen corresponding path program 2 times [2023-03-31 20:57:41,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 20:57:41,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429574700] [2023-03-31 20:57:41,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 20:57:41,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 20:57:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 20:57:42,478 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-03-31 20:57:42,478 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 20:57:42,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429574700] [2023-03-31 20:57:42,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429574700] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 20:57:42,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773165073] [2023-03-31 20:57:42,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-03-31 20:57:42,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 20:57:42,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 20:57:42,480 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) [2023-03-31 20:57:42,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-31 20:57:42,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-03-31 20:57:42,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 20:57:42,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 37 conjunts are in the unsatisfiable core [2023-03-31 20:57:42,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 20:57:42,594 INFO L350 Elim1Store]: Elim1 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 [2023-03-31 20:57:42,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 38 [2023-03-31 20:57:45,320 WARN L861 $PredicateComparison]: unable to prove that (exists ((|v_main_~#acopy~0.base_BEFORE_CALL_12| Int) (v_main_~i~0_56 Int) (|v_main_~#a~0.base_BEFORE_CALL_12| Int) (main_~S~0 Int)) (and (<= v_main_~i~0_56 1) (not (= |v_main_~#a~0.base_BEFORE_CALL_12| |v_main_~#acopy~0.base_BEFORE_CALL_12|)) (<= 1 v_main_~i~0_56) (<= main_~S~0 (+ v_main_~i~0_56 1)) (let ((.cse0 (+ (* main_~S~0 8) (- 4) (* v_main_~i~0_56 (- 4))))) (= (select (select |c_#memory_int| |v_main_~#acopy~0.base_BEFORE_CALL_12|) .cse0) (select (select |c_#memory_int| |v_main_~#a~0.base_BEFORE_CALL_12|) .cse0))) (< v_main_~i~0_56 main_~S~0))) is different from true [2023-03-31 20:57:48,149 WARN L861 $PredicateComparison]: unable to prove that (exists ((|v_main_~#acopy~0.base_BEFORE_CALL_13| Int) (v_main_~i~0_56 Int) (|v_main_~#a~0.base_BEFORE_CALL_13| Int) (main_~S~0 Int)) (and (<= v_main_~i~0_56 1) (<= 1 v_main_~i~0_56) (not (= |v_main_~#a~0.base_BEFORE_CALL_13| |v_main_~#acopy~0.base_BEFORE_CALL_13|)) (<= main_~S~0 (+ v_main_~i~0_56 1)) (let ((.cse0 (+ (* main_~S~0 8) (- 4) (* v_main_~i~0_56 (- 4))))) (= (select (select |c_#memory_int| |v_main_~#a~0.base_BEFORE_CALL_13|) .cse0) (select (select |c_#memory_int| |v_main_~#acopy~0.base_BEFORE_CALL_13|) .cse0))) (< v_main_~i~0_56 main_~S~0))) is different from true [2023-03-31 20:57:48,286 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:48,286 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 10 [2023-03-31 20:57:48,312 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 8 not checked. [2023-03-31 20:57:48,312 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 20:57:48,407 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 20:57:48,407 INFO L350 Elim1Store]: Elim1 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 270 treesize of output 258 [2023-03-31 20:57:48,548 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2023-03-31 20:57:48,548 INFO L350 Elim1Store]: Elim1 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 75 treesize of output 58 [2023-03-31 20:57:48,553 INFO L350 Elim1Store]: Elim1 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 101 treesize of output 93 [2023-03-31 20:57:48,561 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-03-31 20:57:48,561 INFO L350 Elim1Store]: Elim1 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 120 treesize of output 1 [2023-03-31 20:57:48,568 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-03-31 20:57:48,568 INFO L350 Elim1Store]: Elim1 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 85 treesize of output 51 [2023-03-31 20:57:48,574 INFO L350 Elim1Store]: Elim1 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 50 treesize of output 46 [2023-03-31 20:57:48,604 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2023-03-31 20:57:48,605 INFO L350 Elim1Store]: Elim1 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 39 treesize of output 33 [2023-03-31 20:57:48,617 INFO L321 Elim1Store]: treesize reduction 37, result has 2.6 percent of original size [2023-03-31 20:57:48,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 1 [2023-03-31 20:57:48,626 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:48,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 87 [2023-03-31 20:57:48,662 INFO L321 Elim1Store]: treesize reduction 17, result has 55.3 percent of original size [2023-03-31 20:57:48,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 159 treesize of output 115 [2023-03-31 20:57:48,757 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:48,775 INFO L321 Elim1Store]: treesize reduction 23, result has 39.5 percent of original size [2023-03-31 20:57:48,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 38 [2023-03-31 20:57:48,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:48,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:48,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:48,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:48,802 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 1 [2023-03-31 20:57:48,815 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:48,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 42 [2023-03-31 20:57:48,836 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:48,841 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-03-31 20:57:48,842 INFO L350 Elim1Store]: Elim1 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 135 treesize of output 1 [2023-03-31 20:57:48,855 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:48,860 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-03-31 20:57:48,861 INFO L350 Elim1Store]: Elim1 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 135 treesize of output 1 [2023-03-31 20:57:48,866 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:57:48,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:57:48,880 INFO L321 Elim1Store]: treesize reduction 37, result has 2.6 percent of original size [2023-03-31 20:57:48,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 214 treesize of output 1 [2023-03-31 20:57:49,159 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-03-31 20:57:49,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773165073] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 20:57:49,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [585361785] [2023-03-31 20:57:49,161 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2023-03-31 20:57:49,161 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 20:57:49,162 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 20:57:49,162 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 20:57:49,162 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 20:57:49,176 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 17 for LOIs [2023-03-31 20:57:49,324 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 48 for LOIs [2023-03-31 20:57:49,365 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 8 for LOIs [2023-03-31 20:57:49,367 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 20:57:49,369 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 20:57:52,688 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1139#(and (exists ((|v_main_~#a~0.offset_BEFORE_CALL_22| Int) (|v_main_~#acopy~0.offset_BEFORE_CALL_22| Int) (v_main_~i~0_BEFORE_CALL_22 Int) (v_main_~S~0_BEFORE_CALL_45 Int) (|v_main_~#acopy~0.base_BEFORE_CALL_22| Int) (|v_main_~#a~0.base_BEFORE_CALL_22| Int)) (and (< v_main_~i~0_BEFORE_CALL_22 (* v_main_~S~0_BEFORE_CALL_45 2)) (not (= (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_22|) (+ (* v_main_~i~0_BEFORE_CALL_22 4) |v_main_~#a~0.offset_BEFORE_CALL_22|)) (select (select |#memory_int| |v_main_~#acopy~0.base_BEFORE_CALL_22|) (+ |v_main_~#acopy~0.offset_BEFORE_CALL_22| (* v_main_~i~0_BEFORE_CALL_22 4))))) (or (and (<= 1 v_main_~i~0_BEFORE_CALL_22) (= |v_main_~#a~0.offset_BEFORE_CALL_22| 0) (<= 0 |v_main_~#acopy~0.base_BEFORE_CALL_22|) (<= 0 |v_main_~#a~0.base_BEFORE_CALL_22|) (<= 1 v_main_~S~0_BEFORE_CALL_45) (<= v_main_~S~0_BEFORE_CALL_45 1073741823) (= |#NULL.offset| 0) (= |v_main_~#acopy~0.offset_BEFORE_CALL_22| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) (and (= |v_main_~#a~0.offset_BEFORE_CALL_22| 0) (<= 0 |v_main_~#acopy~0.base_BEFORE_CALL_22|) (<= 0 |v_main_~#a~0.base_BEFORE_CALL_22|) (<= 1 v_main_~S~0_BEFORE_CALL_45) (<= v_main_~S~0_BEFORE_CALL_45 1073741823) (= v_main_~i~0_BEFORE_CALL_22 0) (= |#NULL.offset| 0) (= |v_main_~#acopy~0.offset_BEFORE_CALL_22| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))))) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-03-31 20:57:52,689 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 20:57:52,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 20:57:52,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 11] total 25 [2023-03-31 20:57:52,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722698909] [2023-03-31 20:57:52,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 20:57:52,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-03-31 20:57:52,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 20:57:52,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-03-31 20:57:52,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1208, Unknown=4, NotChecked=142, Total=1482 [2023-03-31 20:57:52,691 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 25 states, 24 states have (on average 1.75) internal successors, (42), 23 states have internal predecessors, (42), 8 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-03-31 20:58:04,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 20:58:04,916 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2023-03-31 20:58:04,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-03-31 20:58:04,917 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.75) internal successors, (42), 23 states have internal predecessors, (42), 8 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 34 [2023-03-31 20:58:04,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 20:58:04,919 INFO L225 Difference]: With dead ends: 69 [2023-03-31 20:58:04,919 INFO L226 Difference]: Without dead ends: 67 [2023-03-31 20:58:04,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 69 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 18.1s TimeCoverageRelationStatistics Valid=193, Invalid=1783, Unknown=12, NotChecked=174, Total=2162 [2023-03-31 20:58:04,921 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 11 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 22 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 234 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-03-31 20:58:04,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 261 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 316 Invalid, 6 Unknown, 234 Unchecked, 3.1s Time] [2023-03-31 20:58:04,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-03-31 20:58:04,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 62. [2023-03-31 20:58:04,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 44 states have internal predecessors, (45), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (11), 8 states have call predecessors, (11), 11 states have call successors, (11) [2023-03-31 20:58:04,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2023-03-31 20:58:04,934 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 34 [2023-03-31 20:58:04,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 20:58:04,934 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2023-03-31 20:58:04,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.75) internal successors, (42), 23 states have internal predecessors, (42), 8 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-03-31 20:58:04,935 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2023-03-31 20:58:04,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-03-31 20:58:04,935 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 20:58:04,936 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 20:58:04,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-03-31 20:58:05,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 20:58:05,136 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 20:58:05,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 20:58:05,137 INFO L85 PathProgramCache]: Analyzing trace with hash 593864141, now seen corresponding path program 3 times [2023-03-31 20:58:05,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 20:58:05,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010714479] [2023-03-31 20:58:05,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 20:58:05,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 20:58:05,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 20:58:05,710 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-03-31 20:58:05,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 20:58:05,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010714479] [2023-03-31 20:58:05,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010714479] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 20:58:05,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600820091] [2023-03-31 20:58:05,710 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-03-31 20:58:05,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 20:58:05,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 20:58:05,713 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) [2023-03-31 20:58:05,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-03-31 20:58:05,806 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-03-31 20:58:05,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 20:58:05,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 46 conjunts are in the unsatisfiable core [2023-03-31 20:58:05,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 20:58:05,819 INFO L350 Elim1Store]: Elim1 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 [2023-03-31 20:58:05,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:58:05,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 33 [2023-03-31 20:58:05,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:58:05,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 20:58:05,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 45 [2023-03-31 20:58:08,018 WARN L861 $PredicateComparison]: unable to prove that (exists ((|v_main_~#acopy~0.base_BEFORE_CALL_23| Int) (|v_main_~#a~0.base_BEFORE_CALL_23| Int) (v_main_~i~0_74 Int)) (and (not (= |v_main_~#a~0.base_BEFORE_CALL_23| |v_main_~#acopy~0.base_BEFORE_CALL_23|)) (<= 2 v_main_~i~0_74) (let ((.cse0 (* v_main_~i~0_74 4))) (= (select (select |c_#memory_int| |v_main_~#acopy~0.base_BEFORE_CALL_23|) .cse0) (select (select |c_#memory_int| |v_main_~#a~0.base_BEFORE_CALL_23|) .cse0))) (<= v_main_~i~0_74 2))) is different from true [2023-03-31 20:58:16,293 WARN L861 $PredicateComparison]: unable to prove that (exists ((|v_main_~#acopy~0.base_BEFORE_CALL_24| Int) (|v_main_~#a~0.base_BEFORE_CALL_24| Int) (v_main_~i~0_74 Int)) (and (<= 2 v_main_~i~0_74) (<= v_main_~i~0_74 2) (not (= |v_main_~#a~0.base_BEFORE_CALL_24| |v_main_~#acopy~0.base_BEFORE_CALL_24|)) (let ((.cse0 (* v_main_~i~0_74 4))) (= (select (select |c_#memory_int| |v_main_~#a~0.base_BEFORE_CALL_24|) .cse0) (select (select |c_#memory_int| |v_main_~#acopy~0.base_BEFORE_CALL_24|) .cse0))))) is different from true [2023-03-31 20:58:16,439 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 20:58:16,441 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 10 [2023-03-31 20:58:18,478 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 7 not checked. [2023-03-31 20:58:18,478 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 20:58:18,666 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 20:58:18,667 INFO L350 Elim1Store]: Elim1 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 18896 treesize of output 18072 [2023-03-31 20:58:18,828 INFO L350 Elim1Store]: Elim1 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 3026 treesize of output 2714 [2023-03-31 20:58:18,882 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-03-31 20:58:18,882 INFO L350 Elim1Store]: Elim1 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 53 treesize of output 47 [2023-03-31 20:58:19,211 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 20:58:19,213 INFO L350 Elim1Store]: Elim1 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 87487 treesize of output 83911