/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 OctagonDomain -i ../sv-benchmarks/c/list-properties/list_search-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 04:48:42,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 04:48:42,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 04:48:42,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 04:48:42,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 04:48:42,292 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 04:48:42,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 04:48:42,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 04:48:42,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 04:48:42,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 04:48:42,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 04:48:42,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 04:48:42,309 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 04:48:42,314 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 04:48:42,315 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 04:48:42,316 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 04:48:42,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 04:48:42,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 04:48:42,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 04:48:42,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 04:48:42,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 04:48:42,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 04:48:42,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 04:48:42,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 04:48:42,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 04:48:42,335 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 04:48:42,335 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 04:48:42,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 04:48:42,337 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 04:48:42,337 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 04:48:42,338 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 04:48:42,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 04:48:42,339 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 04:48:42,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 04:48:42,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 04:48:42,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 04:48:42,341 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 04:48:42,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 04:48:42,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 04:48:42,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 04:48:42,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 04:48:42,344 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 [2023-04-01 04:48:42,375 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 04:48:42,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 04:48:42,376 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 04:48:42,376 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 04:48:42,377 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 04:48:42,377 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 04:48:42,377 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 04:48:42,377 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 04:48:42,377 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 04:48:42,377 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 04:48:42,378 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 04:48:42,378 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 04:48:42,378 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 04:48:42,379 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 04:48:42,379 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 04:48:42,379 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 04:48:42,379 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 04:48:42,379 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 04:48:42,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 04:48:42,380 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 04:48:42,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 04:48:42,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 04:48:42,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 04:48:42,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 04:48:42,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 04:48:42,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 04:48:42,381 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 04:48:42,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 04:48:42,381 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 04:48:42,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 04:48:42,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 04:48:42,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 04:48:42,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 04:48:42,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 04:48:42,382 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 04:48:42,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 04:48:42,382 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 04:48:42,382 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 04:48:42,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 04:48:42,382 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 04:48:42,383 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 04:48:42,383 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 04:48:42,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 04:48:42,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 04:48:42,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 04:48:42,622 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 04:48:42,623 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 04:48:42,624 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/list_search-2.i [2023-04-01 04:48:43,861 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 04:48:44,145 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 04:48:44,145 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list_search-2.i [2023-04-01 04:48:44,165 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87d7d9060/5987218abb3149beb8fab3ffc8e1d01c/FLAGaa2440ff0 [2023-04-01 04:48:44,175 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87d7d9060/5987218abb3149beb8fab3ffc8e1d01c [2023-04-01 04:48:44,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 04:48:44,178 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 04:48:44,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 04:48:44,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 04:48:44,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 04:48:44,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 04:48:44" (1/1) ... [2023-04-01 04:48:44,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1051d3d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:48:44, skipping insertion in model container [2023-04-01 04:48:44,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 04:48:44" (1/1) ... [2023-04-01 04:48:44,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 04:48:44,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 04:48:44,380 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/list-properties/list_search-2.i[813,826] [2023-04-01 04:48:44,586 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 04:48:44,598 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 04:48:44,607 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/list-properties/list_search-2.i[813,826] [2023-04-01 04:48:44,633 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 04:48:44,674 INFO L208 MainTranslator]: Completed translation [2023-04-01 04:48:44,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:48:44 WrapperNode [2023-04-01 04:48:44,674 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 04:48:44,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 04:48:44,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 04:48:44,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 04:48:44,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:48:44" (1/1) ... [2023-04-01 04:48:44,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:48:44" (1/1) ... [2023-04-01 04:48:44,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:48:44" (1/1) ... [2023-04-01 04:48:44,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:48:44" (1/1) ... [2023-04-01 04:48:44,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:48:44" (1/1) ... [2023-04-01 04:48:44,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:48:44" (1/1) ... [2023-04-01 04:48:44,739 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:48:44" (1/1) ... [2023-04-01 04:48:44,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:48:44" (1/1) ... [2023-04-01 04:48:44,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 04:48:44,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 04:48:44,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 04:48:44,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 04:48:44,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:48:44" (1/1) ... [2023-04-01 04:48:44,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 04:48:44,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 04:48:44,799 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) [2023-04-01 04:48:44,804 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 [2023-04-01 04:48:44,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 04:48:44,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 04:48:44,833 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 04:48:44,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-01 04:48:44,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2023-04-01 04:48:44,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2023-04-01 04:48:44,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2023-04-01 04:48:44,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2023-04-01 04:48:44,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2023-04-01 04:48:44,834 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2023-04-01 04:48:44,834 INFO L138 BoogieDeclarations]: Found implementation of procedure delete_list [2023-04-01 04:48:44,834 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2023-04-01 04:48:44,837 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 04:48:44,837 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 04:48:44,837 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 04:48:44,837 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-01 04:48:44,837 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-01 04:48:44,837 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 04:48:44,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 04:48:44,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-01 04:48:44,838 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2023-04-01 04:48:44,838 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2023-04-01 04:48:44,838 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2023-04-01 04:48:44,838 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2023-04-01 04:48:44,838 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2023-04-01 04:48:44,838 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2023-04-01 04:48:44,838 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2023-04-01 04:48:44,839 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2023-04-01 04:48:44,839 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2023-04-01 04:48:44,839 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2023-04-01 04:48:44,840 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2023-04-01 04:48:44,840 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2023-04-01 04:48:44,840 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2023-04-01 04:48:44,840 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2023-04-01 04:48:44,840 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2023-04-01 04:48:44,840 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2023-04-01 04:48:44,840 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2023-04-01 04:48:44,840 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2023-04-01 04:48:44,840 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2023-04-01 04:48:44,840 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2023-04-01 04:48:44,841 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2023-04-01 04:48:44,841 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2023-04-01 04:48:44,841 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2023-04-01 04:48:44,842 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2023-04-01 04:48:44,842 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2023-04-01 04:48:44,843 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2023-04-01 04:48:44,843 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-04-01 04:48:44,843 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2023-04-01 04:48:44,843 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2023-04-01 04:48:44,843 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2023-04-01 04:48:44,844 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2023-04-01 04:48:44,844 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2023-04-01 04:48:44,844 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2023-04-01 04:48:44,844 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2023-04-01 04:48:44,844 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2023-04-01 04:48:44,845 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2023-04-01 04:48:44,845 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2023-04-01 04:48:44,845 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2023-04-01 04:48:44,845 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-01 04:48:44,846 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-04-01 04:48:44,846 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2023-04-01 04:48:44,846 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2023-04-01 04:48:44,846 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2023-04-01 04:48:44,847 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2023-04-01 04:48:44,847 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2023-04-01 04:48:44,847 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2023-04-01 04:48:44,847 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2023-04-01 04:48:44,847 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2023-04-01 04:48:44,847 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2023-04-01 04:48:44,847 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2023-04-01 04:48:44,847 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2023-04-01 04:48:44,847 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2023-04-01 04:48:44,847 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2023-04-01 04:48:44,848 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2023-04-01 04:48:44,848 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2023-04-01 04:48:44,848 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2023-04-01 04:48:44,848 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2023-04-01 04:48:44,848 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2023-04-01 04:48:44,848 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2023-04-01 04:48:44,848 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2023-04-01 04:48:44,848 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2023-04-01 04:48:44,848 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-04-01 04:48:44,849 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2023-04-01 04:48:44,849 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2023-04-01 04:48:44,849 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2023-04-01 04:48:44,849 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2023-04-01 04:48:44,849 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2023-04-01 04:48:44,849 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-04-01 04:48:44,849 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2023-04-01 04:48:44,849 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2023-04-01 04:48:44,850 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2023-04-01 04:48:44,850 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2023-04-01 04:48:44,850 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-04-01 04:48:44,850 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2023-04-01 04:48:44,850 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2023-04-01 04:48:44,850 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2023-04-01 04:48:44,850 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2023-04-01 04:48:44,850 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2023-04-01 04:48:44,850 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2023-04-01 04:48:44,850 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2023-04-01 04:48:44,851 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2023-04-01 04:48:44,851 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2023-04-01 04:48:44,851 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2023-04-01 04:48:44,851 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2023-04-01 04:48:44,851 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2023-04-01 04:48:44,851 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2023-04-01 04:48:44,851 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2023-04-01 04:48:44,852 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2023-04-01 04:48:44,852 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2023-04-01 04:48:44,852 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2023-04-01 04:48:44,852 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2023-04-01 04:48:44,852 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2023-04-01 04:48:44,852 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2023-04-01 04:48:44,852 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2023-04-01 04:48:44,852 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2023-04-01 04:48:44,852 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2023-04-01 04:48:44,853 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2023-04-01 04:48:44,853 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2023-04-01 04:48:44,854 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2023-04-01 04:48:44,854 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2023-04-01 04:48:44,855 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2023-04-01 04:48:44,855 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2023-04-01 04:48:44,857 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2023-04-01 04:48:44,857 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2023-04-01 04:48:44,862 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2023-04-01 04:48:44,862 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2023-04-01 04:48:44,863 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2023-04-01 04:48:44,863 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2023-04-01 04:48:44,863 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-04-01 04:48:44,863 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-04-01 04:48:44,863 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2023-04-01 04:48:44,863 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2023-04-01 04:48:44,863 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-04-01 04:48:44,863 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-04-01 04:48:44,863 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2023-04-01 04:48:44,863 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2023-04-01 04:48:44,864 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2023-04-01 04:48:44,864 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2023-04-01 04:48:44,864 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2023-04-01 04:48:44,864 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2023-04-01 04:48:44,864 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2023-04-01 04:48:44,864 INFO L130 BoogieDeclarations]: Found specification of procedure select [2023-04-01 04:48:44,865 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2023-04-01 04:48:44,865 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2023-04-01 04:48:44,865 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2023-04-01 04:48:44,865 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2023-04-01 04:48:44,865 INFO L130 BoogieDeclarations]: Found specification of procedure random [2023-04-01 04:48:44,865 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2023-04-01 04:48:44,865 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2023-04-01 04:48:44,865 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2023-04-01 04:48:44,865 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2023-04-01 04:48:44,865 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2023-04-01 04:48:44,865 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2023-04-01 04:48:44,865 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2023-04-01 04:48:44,866 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2023-04-01 04:48:44,866 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2023-04-01 04:48:44,866 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2023-04-01 04:48:44,866 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2023-04-01 04:48:44,866 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2023-04-01 04:48:44,866 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2023-04-01 04:48:44,866 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2023-04-01 04:48:44,866 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2023-04-01 04:48:44,866 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2023-04-01 04:48:44,866 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2023-04-01 04:48:44,866 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2023-04-01 04:48:44,866 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2023-04-01 04:48:44,866 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2023-04-01 04:48:44,867 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2023-04-01 04:48:44,867 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2023-04-01 04:48:44,867 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2023-04-01 04:48:44,867 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2023-04-01 04:48:44,867 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2023-04-01 04:48:44,867 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2023-04-01 04:48:44,868 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2023-04-01 04:48:44,868 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2023-04-01 04:48:44,868 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 04:48:44,868 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-04-01 04:48:44,868 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2023-04-01 04:48:44,868 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 04:48:44,868 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2023-04-01 04:48:44,868 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2023-04-01 04:48:44,868 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2023-04-01 04:48:44,868 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2023-04-01 04:48:44,869 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2023-04-01 04:48:44,869 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2023-04-01 04:48:44,869 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2023-04-01 04:48:44,869 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 04:48:44,869 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2023-04-01 04:48:44,869 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2023-04-01 04:48:44,870 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2023-04-01 04:48:44,870 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2023-04-01 04:48:44,870 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2023-04-01 04:48:44,870 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2023-04-01 04:48:44,870 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2023-04-01 04:48:44,870 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2023-04-01 04:48:44,870 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2023-04-01 04:48:44,870 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2023-04-01 04:48:44,870 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2023-04-01 04:48:44,870 INFO L130 BoogieDeclarations]: Found specification of procedure system [2023-04-01 04:48:44,870 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2023-04-01 04:48:44,870 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2023-04-01 04:48:44,871 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2023-04-01 04:48:44,871 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2023-04-01 04:48:44,871 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2023-04-01 04:48:44,871 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2023-04-01 04:48:44,871 INFO L130 BoogieDeclarations]: Found specification of procedure div [2023-04-01 04:48:44,871 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2023-04-01 04:48:44,871 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2023-04-01 04:48:44,871 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2023-04-01 04:48:44,871 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2023-04-01 04:48:44,871 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2023-04-01 04:48:44,871 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2023-04-01 04:48:44,872 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2023-04-01 04:48:44,872 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2023-04-01 04:48:44,872 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2023-04-01 04:48:44,872 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2023-04-01 04:48:44,872 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2023-04-01 04:48:44,872 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2023-04-01 04:48:44,872 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2023-04-01 04:48:44,872 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2023-04-01 04:48:44,872 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2023-04-01 04:48:44,872 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2023-04-01 04:48:44,872 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2023-04-01 04:48:44,872 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2023-04-01 04:48:44,872 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2023-04-01 04:48:44,873 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2023-04-01 04:48:44,873 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2023-04-01 04:48:44,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 04:48:44,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 04:48:44,873 INFO L130 BoogieDeclarations]: Found specification of procedure delete_list [2023-04-01 04:48:44,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 04:48:44,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 04:48:44,873 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2023-04-01 04:48:44,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 04:48:44,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 04:48:44,873 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 04:48:44,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 04:48:44,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 04:48:44,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 04:48:45,215 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 04:48:45,216 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 04:48:45,371 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 04:48:45,413 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 04:48:45,413 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-04-01 04:48:45,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 04:48:45 BoogieIcfgContainer [2023-04-01 04:48:45,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 04:48:45,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 04:48:45,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 04:48:45,420 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 04:48:45,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 04:48:44" (1/3) ... [2023-04-01 04:48:45,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b8591a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 04:48:45, skipping insertion in model container [2023-04-01 04:48:45,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:48:44" (2/3) ... [2023-04-01 04:48:45,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b8591a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 04:48:45, skipping insertion in model container [2023-04-01 04:48:45,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 04:48:45" (3/3) ... [2023-04-01 04:48:45,426 INFO L112 eAbstractionObserver]: Analyzing ICFG list_search-2.i [2023-04-01 04:48:45,440 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 04:48:45,440 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 04:48:45,481 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 04:48:45,486 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;@3857aaf4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 04:48:45,487 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 04:48:45,490 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 27 states have internal predecessors, (35), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-04-01 04:48:45,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-04-01 04:48:45,497 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:48:45,498 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 04:48:45,498 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:48:45,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:48:45,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1333333873, now seen corresponding path program 1 times [2023-04-01 04:48:45,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:48:45,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842394419] [2023-04-01 04:48:45,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:48:45,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:48:45,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:48:45,838 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-01 04:48:45,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:48:45,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842394419] [2023-04-01 04:48:45,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842394419] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 04:48:45,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 04:48:45,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 04:48:45,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706215046] [2023-04-01 04:48:45,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 04:48:45,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 04:48:45,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 04:48:45,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 04:48:45,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 04:48:45,874 INFO L87 Difference]: Start difference. First operand has 43 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 27 states have internal predecessors, (35), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-04-01 04:48:45,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 04:48:45,925 INFO L93 Difference]: Finished difference Result 66 states and 82 transitions. [2023-04-01 04:48:45,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 04:48:45,927 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 32 [2023-04-01 04:48:45,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 04:48:45,932 INFO L225 Difference]: With dead ends: 66 [2023-04-01 04:48:45,932 INFO L226 Difference]: Without dead ends: 28 [2023-04-01 04:48:45,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 04:48:45,938 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 04:48:45,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 04:48:45,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-04-01 04:48:45,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-04-01 04:48:45,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 8 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 04:48:45,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2023-04-01 04:48:45,973 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 32 [2023-04-01 04:48:45,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 04:48:45,974 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2023-04-01 04:48:45,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-04-01 04:48:45,976 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2023-04-01 04:48:45,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-04-01 04:48:45,977 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:48:45,977 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 04:48:45,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 04:48:45,978 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:48:45,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:48:45,979 INFO L85 PathProgramCache]: Analyzing trace with hash -953353021, now seen corresponding path program 1 times [2023-04-01 04:48:45,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:48:45,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322308656] [2023-04-01 04:48:45,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:48:45,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:48:46,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:48:46,269 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-01 04:48:46,269 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:48:46,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322308656] [2023-04-01 04:48:46,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322308656] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 04:48:46,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 04:48:46,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 04:48:46,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971217098] [2023-04-01 04:48:46,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 04:48:46,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 04:48:46,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 04:48:46,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 04:48:46,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 04:48:46,274 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-01 04:48:46,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 04:48:46,340 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2023-04-01 04:48:46,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 04:48:46,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 33 [2023-04-01 04:48:46,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 04:48:46,342 INFO L225 Difference]: With dead ends: 42 [2023-04-01 04:48:46,342 INFO L226 Difference]: Without dead ends: 30 [2023-04-01 04:48:46,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 04:48:46,347 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 25 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 04:48:46,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 47 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 04:48:46,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-04-01 04:48:46,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2023-04-01 04:48:46,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 8 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 04:48:46,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2023-04-01 04:48:46,361 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 33 [2023-04-01 04:48:46,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 04:48:46,362 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2023-04-01 04:48:46,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-01 04:48:46,362 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2023-04-01 04:48:46,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-04-01 04:48:46,363 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:48:46,363 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 04:48:46,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 04:48:46,364 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:48:46,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:48:46,365 INFO L85 PathProgramCache]: Analyzing trace with hash 2090542030, now seen corresponding path program 1 times [2023-04-01 04:48:46,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:48:46,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449059012] [2023-04-01 04:48:46,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:48:46,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:48:46,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:48:47,088 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-01 04:48:47,089 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:48:47,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449059012] [2023-04-01 04:48:47,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449059012] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 04:48:47,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 04:48:47,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-01 04:48:47,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143414695] [2023-04-01 04:48:47,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 04:48:47,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 04:48:47,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 04:48:47,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 04:48:47,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-04-01 04:48:47,093 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 11 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-01 04:48:47,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 04:48:47,402 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2023-04-01 04:48:47,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 04:48:47,404 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 34 [2023-04-01 04:48:47,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 04:48:47,408 INFO L225 Difference]: With dead ends: 40 [2023-04-01 04:48:47,409 INFO L226 Difference]: Without dead ends: 32 [2023-04-01 04:48:47,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2023-04-01 04:48:47,415 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 32 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 04:48:47,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 141 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 04:48:47,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-04-01 04:48:47,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2023-04-01 04:48:47,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 8 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 04:48:47,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2023-04-01 04:48:47,422 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 34 [2023-04-01 04:48:47,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 04:48:47,423 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2023-04-01 04:48:47,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-01 04:48:47,423 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2023-04-01 04:48:47,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-04-01 04:48:47,424 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:48:47,424 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 04:48:47,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 04:48:47,424 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:48:47,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:48:47,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1897580371, now seen corresponding path program 1 times [2023-04-01 04:48:47,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:48:47,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560907697] [2023-04-01 04:48:47,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:48:47,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:48:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:48:48,060 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-01 04:48:48,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:48:48,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560907697] [2023-04-01 04:48:48,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560907697] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 04:48:48,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636098648] [2023-04-01 04:48:48,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:48:48,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 04:48:48,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 04:48:48,065 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) [2023-04-01 04:48:48,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 04:48:48,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:48:48,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 25 conjunts are in the unsatisfiable core [2023-04-01 04:48:48,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 04:48:48,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-04-01 04:48:48,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-04-01 04:48:48,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-04-01 04:48:48,607 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 04:48:48,609 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 04:48:48,613 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 18 treesize of output 11 [2023-04-01 04:48:48,622 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-01 04:48:48,622 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 04:48:49,146 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 04:48:49,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 51 [2023-04-01 04:48:49,184 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 04:48:49,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 51 [2023-04-01 04:48:49,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2023-04-01 04:48:49,313 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 04:48:49,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 7 treesize of output 6 [2023-04-01 04:48:49,321 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 04:48:49,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2023-04-01 04:48:49,425 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 04:48:49,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 93 treesize of output 109 [2023-04-01 04:48:49,439 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 04:48:49,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 88 [2023-04-01 04:48:49,459 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 04:48:49,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 81 treesize of output 97 [2023-04-01 04:48:49,526 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-01 04:48:49,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636098648] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 04:48:49,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1187838863] [2023-04-01 04:48:49,543 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2023-04-01 04:48:49,543 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 04:48:49,546 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 04:48:49,550 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 04:48:49,550 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 04:48:49,627 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 32 for LOIs [2023-04-01 04:48:50,831 INFO L197 IcfgInterpreter]: Interpreting procedure search_list with input of size 21 for LOIs [2023-04-01 04:48:50,968 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 30 for LOIs [2023-04-01 04:48:50,981 INFO L197 IcfgInterpreter]: Interpreting procedure insert_list with input of size 39 for LOIs [2023-04-01 04:48:51,010 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2023-04-01 04:48:51,015 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 04:48:52,176 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '659#(and (<= 1 |#StackHeapBarrier|) (= ~head~0.offset 0) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (exists ((v_main_~temp~0.base_BEFORE_CALL_1 Int) (v_main_~temp~0.offset_BEFORE_CALL_1 Int)) (not (= 2 (select (select |#memory_int| v_main_~temp~0.base_BEFORE_CALL_1) v_main_~temp~0.offset_BEFORE_CALL_1)))) (= |#NULL.offset| 0) (<= (+ ~head~0.base 1) |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2023-04-01 04:48:52,177 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 04:48:52,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 04:48:52,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2023-04-01 04:48:52,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287220456] [2023-04-01 04:48:52,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 04:48:52,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 04:48:52,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 04:48:52,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 04:48:52,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=984, Unknown=0, NotChecked=0, Total=1122 [2023-04-01 04:48:52,179 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 12 states, 10 states have (on average 2.8) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-01 04:48:52,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 04:48:52,422 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2023-04-01 04:48:52,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 04:48:52,423 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.8) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 36 [2023-04-01 04:48:52,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 04:48:52,424 INFO L225 Difference]: With dead ends: 49 [2023-04-01 04:48:52,424 INFO L226 Difference]: Without dead ends: 35 [2023-04-01 04:48:52,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=198, Invalid=1442, Unknown=0, NotChecked=0, Total=1640 [2023-04-01 04:48:52,425 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 59 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 04:48:52,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 46 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 04:48:52,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-04-01 04:48:52,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2023-04-01 04:48:52,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 04:48:52,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2023-04-01 04:48:52,431 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 36 [2023-04-01 04:48:52,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 04:48:52,431 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2023-04-01 04:48:52,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.8) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-01 04:48:52,432 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2023-04-01 04:48:52,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-04-01 04:48:52,432 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:48:52,434 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 04:48:52,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 04:48:52,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 04:48:52,641 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:48:52,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:48:52,642 INFO L85 PathProgramCache]: Analyzing trace with hash -864636478, now seen corresponding path program 2 times [2023-04-01 04:48:52,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:48:52,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264908730] [2023-04-01 04:48:52,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:48:52,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:48:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:48:53,519 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 04:48:53,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:48:53,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264908730] [2023-04-01 04:48:53,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264908730] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 04:48:53,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109791085] [2023-04-01 04:48:53,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-01 04:48:53,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 04:48:53,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 04:48:53,522 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) [2023-04-01 04:48:53,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 04:48:53,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-04-01 04:48:53,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 04:48:53,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 50 conjunts are in the unsatisfiable core [2023-04-01 04:48:53,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 04:48:54,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2023-04-01 04:48:54,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-04-01 04:48:54,222 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-01 04:48:54,223 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 04:48:54,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 10 [2023-04-01 04:48:54,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2023-04-01 04:48:54,920 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-04-01 04:48:54,921 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 30 treesize of output 25 [2023-04-01 04:48:54,930 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-04-01 04:48:54,930 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 24 treesize of output 12 [2023-04-01 04:48:54,984 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-01 04:48:54,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109791085] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 04:48:54,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [737094177] [2023-04-01 04:48:54,988 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2023-04-01 04:48:54,988 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 04:48:54,988 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 04:48:54,988 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 04:48:54,988 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 04:48:55,014 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 32 for LOIs [2023-04-01 04:48:55,785 INFO L197 IcfgInterpreter]: Interpreting procedure search_list with input of size 21 for LOIs [2023-04-01 04:48:55,882 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 30 for LOIs [2023-04-01 04:48:55,891 INFO L197 IcfgInterpreter]: Interpreting procedure insert_list with input of size 39 for LOIs [2023-04-01 04:48:55,940 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2023-04-01 04:48:55,948 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 04:48:57,391 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1080#(and (<= 1 |#StackHeapBarrier|) (= ~head~0.offset 0) (exists ((v_main_~temp~0.offset_BEFORE_CALL_2 Int) (v_main_~temp~0.base_BEFORE_CALL_2 Int)) (not (= (select (select |#memory_int| v_main_~temp~0.base_BEFORE_CALL_2) v_main_~temp~0.offset_BEFORE_CALL_2) 2))) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= (+ ~head~0.base 1) |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2023-04-01 04:48:57,391 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 04:48:57,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 04:48:57,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 14] total 36 [2023-04-01 04:48:57,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877836183] [2023-04-01 04:48:57,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 04:48:57,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-04-01 04:48:57,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 04:48:57,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-04-01 04:48:57,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=3064, Unknown=0, NotChecked=0, Total=3306 [2023-04-01 04:48:57,397 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 36 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 31 states have internal predecessors, (47), 6 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2023-04-01 04:48:58,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 04:48:58,466 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2023-04-01 04:48:58,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-01 04:48:58,467 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 31 states have internal predecessors, (47), 6 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 37 [2023-04-01 04:48:58,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 04:48:58,468 INFO L225 Difference]: With dead ends: 45 [2023-04-01 04:48:58,468 INFO L226 Difference]: Without dead ends: 37 [2023-04-01 04:48:58,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1486 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=520, Invalid=5486, Unknown=0, NotChecked=0, Total=6006 [2023-04-01 04:48:58,471 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 87 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 04:48:58,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 122 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 04:48:58,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-04-01 04:48:58,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2023-04-01 04:48:58,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 04:48:58,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2023-04-01 04:48:58,477 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 37 [2023-04-01 04:48:58,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 04:48:58,478 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2023-04-01 04:48:58,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 31 states have internal predecessors, (47), 6 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2023-04-01 04:48:58,478 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2023-04-01 04:48:58,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-04-01 04:48:58,479 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:48:58,479 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 04:48:58,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 04:48:58,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 04:48:58,687 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:48:58,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:48:58,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1444223393, now seen corresponding path program 3 times [2023-04-01 04:48:58,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:48:58,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487923355] [2023-04-01 04:48:58,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:48:58,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:48:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:49:00,422 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 04:49:00,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:49:00,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487923355] [2023-04-01 04:49:00,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487923355] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 04:49:00,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102634228] [2023-04-01 04:49:00,423 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-01 04:49:00,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 04:49:00,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 04:49:00,425 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) [2023-04-01 04:49:00,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 04:49:00,684 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-01 04:49:00,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 04:49:00,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 96 conjunts are in the unsatisfiable core [2023-04-01 04:49:00,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 04:49:00,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-04-01 04:49:00,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-04-01 04:49:00,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-04-01 04:49:00,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-04-01 04:49:00,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-04-01 04:49:00,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-04-01 04:49:00,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 8 [2023-04-01 04:49:00,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-04-01 04:49:00,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-04-01 04:49:00,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-04-01 04:49:00,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-04-01 04:49:00,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-04-01 04:49:00,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 04:49:00,918 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 17 treesize of output 19 [2023-04-01 04:49:00,928 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-04-01 04:49:00,928 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 1 case distinctions, treesize of input 15 treesize of output 15 [2023-04-01 04:49:01,588 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-04-01 04:49:01,589 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 27 [2023-04-01 04:49:01,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-04-01 04:49:01,706 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 04:49:01,706 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 04:49:03,477 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 04:49:03,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 67 [2023-04-01 04:49:03,504 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2023-04-01 04:49:03,504 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 63 treesize of output 47 [2023-04-01 04:49:03,531 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 04:49:03,532 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 27 treesize of output 31 [2023-04-01 04:49:03,595 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 04:49:03,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2023-04-01 04:49:03,608 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 04:49:03,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 32 [2023-04-01 04:49:03,624 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 04:49:03,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 27 [2023-04-01 04:49:03,660 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-04-01 04:49:03,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2023-04-01 04:49:03,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2023-04-01 04:49:03,699 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-04-01 04:49:03,724 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 04:49:03,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 24 [2023-04-01 04:49:03,736 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 04:49:03,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2023-04-01 04:49:03,740 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 04:49:03,741 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-04-01 04:49:03,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 48 [2023-04-01 04:49:03,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102634228] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 04:49:03,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1273884791] [2023-04-01 04:49:03,874 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2023-04-01 04:49:03,874 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 04:49:03,874 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 04:49:03,875 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 04:49:03,875 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 04:49:03,910 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 32 for LOIs [2023-04-01 04:49:04,569 INFO L197 IcfgInterpreter]: Interpreting procedure search_list with input of size 21 for LOIs [2023-04-01 04:49:04,662 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 30 for LOIs [2023-04-01 04:49:04,669 INFO L197 IcfgInterpreter]: Interpreting procedure insert_list with input of size 39 for LOIs [2023-04-01 04:49:04,709 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2023-04-01 04:49:04,720 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 04:49:06,320 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1485#(and (<= 1 |#StackHeapBarrier|) (= ~head~0.offset 0) (exists ((v_main_~temp~0.offset_BEFORE_CALL_3 Int) (v_main_~temp~0.base_BEFORE_CALL_3 Int)) (not (= 2 (select (select |#memory_int| v_main_~temp~0.base_BEFORE_CALL_3) v_main_~temp~0.offset_BEFORE_CALL_3)))) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= (+ ~head~0.base 1) |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2023-04-01 04:49:06,320 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 04:49:06,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 04:49:06,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 34 [2023-04-01 04:49:06,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941532165] [2023-04-01 04:49:06,321 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 04:49:06,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-04-01 04:49:06,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 04:49:06,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-04-01 04:49:06,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=3907, Unknown=0, NotChecked=0, Total=4160 [2023-04-01 04:49:06,325 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 34 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 28 states have internal predecessors, (41), 6 states have call successors, (10), 6 states have call predecessors, (10), 8 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 04:49:07,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 04:49:07,573 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2023-04-01 04:49:07,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-04-01 04:49:07,574 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 28 states have internal predecessors, (41), 6 states have call successors, (10), 6 states have call predecessors, (10), 8 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) Word has length 39 [2023-04-01 04:49:07,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 04:49:07,575 INFO L225 Difference]: With dead ends: 49 [2023-04-01 04:49:07,575 INFO L226 Difference]: Without dead ends: 41 [2023-04-01 04:49:07,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1961 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=570, Invalid=6740, Unknown=0, NotChecked=0, Total=7310 [2023-04-01 04:49:07,578 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 88 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 04:49:07,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 138 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 04:49:07,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-04-01 04:49:07,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2023-04-01 04:49:07,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 8 states have call successors, (8), 7 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 04:49:07,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2023-04-01 04:49:07,586 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 39 [2023-04-01 04:49:07,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 04:49:07,586 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2023-04-01 04:49:07,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 28 states have internal predecessors, (41), 6 states have call successors, (10), 6 states have call predecessors, (10), 8 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 04:49:07,586 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2023-04-01 04:49:07,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-04-01 04:49:07,587 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:49:07,587 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 04:49:07,595 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-01 04:49:07,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 04:49:07,793 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:49:07,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:49:07,793 INFO L85 PathProgramCache]: Analyzing trace with hash -239532608, now seen corresponding path program 4 times [2023-04-01 04:49:07,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:49:07,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357250596] [2023-04-01 04:49:07,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:49:07,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:49:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:49:08,730 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-04-01 04:49:08,731 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:49:08,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357250596] [2023-04-01 04:49:08,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357250596] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 04:49:08,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534048703] [2023-04-01 04:49:08,731 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-04-01 04:49:08,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 04:49:08,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 04:49:08,733 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) [2023-04-01 04:49:08,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 04:49:08,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:49:08,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 59 conjunts are in the unsatisfiable core [2023-04-01 04:49:09,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 04:49:09,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-04-01 04:49:09,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-04-01 04:49:09,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-04-01 04:49:09,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-04-01 04:49:09,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-04-01 04:49:09,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-04-01 04:49:09,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-04-01 04:49:09,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-04-01 04:49:09,422 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 04:49:09,422 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 04:49:10,348 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-01 04:49:10,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534048703] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 04:49:10,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [166610766] [2023-04-01 04:49:10,350 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2023-04-01 04:49:10,351 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 04:49:10,351 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 04:49:10,351 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 04:49:10,351 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 04:49:10,378 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 32 for LOIs [2023-04-01 04:49:11,008 INFO L197 IcfgInterpreter]: Interpreting procedure search_list with input of size 21 for LOIs [2023-04-01 04:49:11,089 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 30 for LOIs [2023-04-01 04:49:11,098 INFO L197 IcfgInterpreter]: Interpreting procedure insert_list with input of size 39 for LOIs [2023-04-01 04:49:11,118 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2023-04-01 04:49:11,122 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 04:49:12,354 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1962#(and (<= 1 |#StackHeapBarrier|) (= ~head~0.offset 0) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (exists ((v_main_~temp~0.base_BEFORE_CALL_4 Int) (v_main_~temp~0.offset_BEFORE_CALL_4 Int)) (not (= (select (select |#memory_int| v_main_~temp~0.base_BEFORE_CALL_4) v_main_~temp~0.offset_BEFORE_CALL_4) 2))) (= |#NULL.offset| 0) (<= (+ ~head~0.base 1) |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2023-04-01 04:49:12,354 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 04:49:12,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 04:49:12,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 11] total 33 [2023-04-01 04:49:12,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70865919] [2023-04-01 04:49:12,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 04:49:12,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-04-01 04:49:12,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 04:49:12,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-04-01 04:49:12,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=2739, Unknown=0, NotChecked=0, Total=2970 [2023-04-01 04:49:12,358 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 33 states, 29 states have (on average 1.896551724137931) internal successors, (55), 28 states have internal predecessors, (55), 7 states have call successors, (13), 6 states have call predecessors, (13), 8 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2023-04-01 04:49:13,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 04:49:13,276 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2023-04-01 04:49:13,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-01 04:49:13,277 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 29 states have (on average 1.896551724137931) internal successors, (55), 28 states have internal predecessors, (55), 7 states have call successors, (13), 6 states have call predecessors, (13), 8 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 41 [2023-04-01 04:49:13,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 04:49:13,277 INFO L225 Difference]: With dead ends: 60 [2023-04-01 04:49:13,277 INFO L226 Difference]: Without dead ends: 42 [2023-04-01 04:49:13,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1201 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=383, Invalid=3907, Unknown=0, NotChecked=0, Total=4290 [2023-04-01 04:49:13,279 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 131 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 04:49:13,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 119 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 04:49:13,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-04-01 04:49:13,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2023-04-01 04:49:13,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 8 states have call successors, (8), 7 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 04:49:13,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2023-04-01 04:49:13,288 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 41 [2023-04-01 04:49:13,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 04:49:13,288 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2023-04-01 04:49:13,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 29 states have (on average 1.896551724137931) internal successors, (55), 28 states have internal predecessors, (55), 7 states have call successors, (13), 6 states have call predecessors, (13), 8 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2023-04-01 04:49:13,288 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2023-04-01 04:49:13,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-04-01 04:49:13,289 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:49:13,289 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 04:49:13,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 04:49:13,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 04:49:13,496 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:49:13,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:49:13,497 INFO L85 PathProgramCache]: Analyzing trace with hash 620818891, now seen corresponding path program 5 times [2023-04-01 04:49:13,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:49:13,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080230852] [2023-04-01 04:49:13,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:49:13,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:49:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:49:15,927 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 04:49:15,928 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:49:15,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080230852] [2023-04-01 04:49:15,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080230852] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 04:49:15,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642032441] [2023-04-01 04:49:15,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-01 04:49:15,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 04:49:15,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 04:49:15,930 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) [2023-04-01 04:49:15,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 04:49:16,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-04-01 04:49:16,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 04:49:16,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 128 conjunts are in the unsatisfiable core [2023-04-01 04:49:16,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 04:49:16,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-04-01 04:49:16,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-04-01 04:49:16,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-04-01 04:49:16,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-04-01 04:49:16,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-04-01 04:49:16,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-04-01 04:49:16,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-04-01 04:49:16,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-04-01 04:49:16,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 04:49:16,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2023-04-01 04:49:16,524 INFO L321 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2023-04-01 04:49:16,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2023-04-01 04:49:16,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-04-01 04:49:16,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-04-01 04:49:16,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-04-01 04:49:16,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-04-01 04:49:16,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 04:49:16,742 INFO L321 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2023-04-01 04:49:16,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 50 [2023-04-01 04:49:16,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 04:49:16,751 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 18 treesize of output 20 [2023-04-01 04:49:16,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 04:49:16,767 INFO L321 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2023-04-01 04:49:16,767 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 1 case distinctions, treesize of input 28 treesize of output 22 [2023-04-01 04:49:17,612 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2023-04-01 04:49:17,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 48 [2023-04-01 04:49:17,712 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 04:49:17,712 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 04:49:19,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2023-04-01 04:49:19,159 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 9 treesize of output 7 [2023-04-01 04:49:19,410 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-04-01 04:49:19,486 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 04:49:19,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 43 [2023-04-01 04:49:19,499 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 04:49:19,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 68 [2023-04-01 04:49:19,582 INFO L321 Elim1Store]: treesize reduction 143, result has 47.2 percent of original size [2023-04-01 04:49:19,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 142 treesize of output 210 [2023-04-01 04:49:19,687 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 04:49:19,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 64 [2023-04-01 04:49:19,768 INFO L321 Elim1Store]: treesize reduction 143, result has 47.2 percent of original size [2023-04-01 04:49:19,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 142 treesize of output 210 [2023-04-01 04:49:19,884 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 04:49:19,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 39 [2023-04-01 04:49:19,907 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 04:49:19,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 43 [2023-04-01 04:49:19,986 INFO L321 Elim1Store]: treesize reduction 143, result has 47.2 percent of original size [2023-04-01 04:49:19,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 142 treesize of output 210 [2023-04-01 04:49:20,053 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 04:49:20,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 49 [2023-04-01 04:49:20,064 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 04:49:20,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 53 [2023-04-01 04:49:20,160 INFO L321 Elim1Store]: treesize reduction 132, result has 53.7 percent of original size [2023-04-01 04:49:20,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 188 treesize of output 271 [2023-04-01 04:49:20,387 INFO L321 Elim1Store]: treesize reduction 34, result has 60.9 percent of original size [2023-04-01 04:49:20,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 275 treesize of output 294 [2023-04-01 04:49:20,652 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 [2023-04-01 04:49:20,674 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 [2023-04-01 04:49:20,686 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 [2023-04-01 04:49:20,747 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 6 treesize of output 4 [2023-04-01 04:49:20,755 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 6 treesize of output 4 [2023-04-01 04:49:20,773 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 6 treesize of output 4 [2023-04-01 04:49:20,807 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 04:49:20,840 INFO L321 Elim1Store]: treesize reduction 29, result has 56.7 percent of original size [2023-04-01 04:49:20,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 243 treesize of output 243 [2023-04-01 04:49:20,932 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 6 treesize of output 4 [2023-04-01 04:49:21,047 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 04:49:21,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 38 [2023-04-01 04:49:21,085 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 04:49:21,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 230 treesize of output 233 [2023-04-01 04:49:21,241 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 04:49:21,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 396 treesize of output 390 [2023-04-01 04:49:21,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2023-04-01 04:49:21,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4