/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 EqDomain -i ../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 11:07:17,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 11:07:17,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 11:07:17,516 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 11:07:17,516 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 11:07:17,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 11:07:17,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 11:07:17,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 11:07:17,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 11:07:17,532 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 11:07:17,533 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 11:07:17,534 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 11:07:17,534 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 11:07:17,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 11:07:17,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 11:07:17,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 11:07:17,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 11:07:17,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 11:07:17,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 11:07:17,541 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 11:07:17,542 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 11:07:17,545 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 11:07:17,546 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 11:07:17,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 11:07:17,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 11:07:17,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 11:07:17,560 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 11:07:17,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 11:07:17,562 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 11:07:17,563 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 11:07:17,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 11:07:17,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 11:07:17,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 11:07:17,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 11:07:17,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 11:07:17,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 11:07:17,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 11:07:17,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 11:07:17,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 11:07:17,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 11:07:17,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 11:07:17,570 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 11:07:17,600 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 11:07:17,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 11:07:17,601 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 11:07:17,601 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 11:07:17,601 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 11:07:17,602 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 11:07:17,602 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 11:07:17,602 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 11:07:17,602 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 11:07:17,602 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 11:07:17,603 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 11:07:17,603 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 11:07:17,603 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 11:07:17,603 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 11:07:17,603 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 11:07:17,603 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 11:07:17,604 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 11:07:17,604 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 11:07:17,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 11:07:17,604 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 11:07:17,604 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 11:07:17,604 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 11:07:17,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 11:07:17,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 11:07:17,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 11:07:17,605 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 11:07:17,605 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 11:07:17,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 11:07:17,606 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 11:07:17,606 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 11:07:17,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 11:07:17,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 11:07:17,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 11:07:17,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 11:07:17,606 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 11:07:17,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 11:07:17,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 11:07:17,607 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 11:07:17,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 11:07:17,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 11:07:17,607 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 11:07:17,607 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 11:07:17,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 11:07:17,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 11:07:17,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 11:07:17,880 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 11:07:17,880 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 11:07:17,881 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2023-04-01 11:07:19,031 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 11:07:19,239 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 11:07:19,240 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2023-04-01 11:07:19,246 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eeed0bb5/e166f54f4b4b46a69dc8fcea1ed6da74/FLAG57f91af54 [2023-04-01 11:07:19,264 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eeed0bb5/e166f54f4b4b46a69dc8fcea1ed6da74 [2023-04-01 11:07:19,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 11:07:19,269 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 11:07:19,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 11:07:19,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 11:07:19,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 11:07:19,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:07:19" (1/1) ... [2023-04-01 11:07:19,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ae86987 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:07:19, skipping insertion in model container [2023-04-01 11:07:19,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:07:19" (1/1) ... [2023-04-01 11:07:19,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 11:07:19,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 11:07:19,545 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/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c[7920,7933] [2023-04-01 11:07:19,554 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 11:07:19,563 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 11:07:19,611 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/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c[7920,7933] [2023-04-01 11:07:19,615 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 11:07:19,637 WARN L667 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-04-01 11:07:19,643 INFO L208 MainTranslator]: Completed translation [2023-04-01 11:07:19,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:07:19 WrapperNode [2023-04-01 11:07:19,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 11:07:19,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 11:07:19,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 11:07:19,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 11:07:19,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:07:19" (1/1) ... [2023-04-01 11:07:19,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:07:19" (1/1) ... [2023-04-01 11:07:19,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:07:19" (1/1) ... [2023-04-01 11:07:19,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:07:19" (1/1) ... [2023-04-01 11:07:19,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:07:19" (1/1) ... [2023-04-01 11:07:19,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:07:19" (1/1) ... [2023-04-01 11:07:19,724 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:07:19" (1/1) ... [2023-04-01 11:07:19,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:07:19" (1/1) ... [2023-04-01 11:07:19,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 11:07:19,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 11:07:19,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 11:07:19,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 11:07:19,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:07:19" (1/1) ... [2023-04-01 11:07:19,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 11:07:19,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 11:07:19,763 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 11:07:19,796 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 11:07:19,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 11:07:19,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 11:07:19,818 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 11:07:19,818 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 11:07:19,818 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 11:07:19,819 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 11:07:19,819 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 11:07:19,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 11:07:19,819 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2023-04-01 11:07:19,819 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2023-04-01 11:07:19,819 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 11:07:19,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-01 11:07:19,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-01 11:07:19,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 11:07:19,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 11:07:19,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 11:07:19,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 11:07:19,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 11:07:19,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 11:07:19,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 11:07:19,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 11:07:19,957 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 11:07:19,959 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 11:07:20,525 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 11:07:20,546 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 11:07:20,546 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-01 11:07:20,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:07:20 BoogieIcfgContainer [2023-04-01 11:07:20,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 11:07:20,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 11:07:20,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 11:07:20,555 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 11:07:20,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 11:07:19" (1/3) ... [2023-04-01 11:07:20,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eace9ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:07:20, skipping insertion in model container [2023-04-01 11:07:20,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:07:19" (2/3) ... [2023-04-01 11:07:20,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eace9ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:07:20, skipping insertion in model container [2023-04-01 11:07:20,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:07:20" (3/3) ... [2023-04-01 11:07:20,558 INFO L112 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+cfa-reducer.c [2023-04-01 11:07:20,573 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 11:07:20,574 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 11:07:20,614 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 11:07:20,619 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;@72de65b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 11:07:20,620 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 11:07:20,623 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 11:07:20,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-04-01 11:07:20,628 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:07:20,628 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 11:07:20,629 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:07:20,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:07:20,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1258389775, now seen corresponding path program 1 times [2023-04-01 11:07:20,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:07:20,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323935580] [2023-04-01 11:07:20,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:07:20,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:07:20,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:07:21,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:07:21,295 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 11:07:21,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323935580] [2023-04-01 11:07:21,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323935580] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 11:07:21,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 11:07:21,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 11:07:21,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736788726] [2023-04-01 11:07:21,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 11:07:21,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 11:07:21,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 11:07:21,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 11:07:21,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 11:07:21,338 INFO L87 Difference]: Start difference. First operand has 16 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:07:21,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 11:07:21,429 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2023-04-01 11:07:21,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 11:07:21,433 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-04-01 11:07:21,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 11:07:21,438 INFO L225 Difference]: With dead ends: 34 [2023-04-01 11:07:21,438 INFO L226 Difference]: Without dead ends: 18 [2023-04-01 11:07:21,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-04-01 11:07:21,443 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 22 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 11:07:21,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 49 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 11:07:21,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-04-01 11:07:21,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 15. [2023-04-01 11:07:21,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:07:21,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2023-04-01 11:07:21,471 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 10 [2023-04-01 11:07:21,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 11:07:21,471 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2023-04-01 11:07:21,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:07:21,472 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2023-04-01 11:07:21,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-04-01 11:07:21,472 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:07:21,472 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 11:07:21,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 11:07:21,473 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:07:21,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:07:21,474 INFO L85 PathProgramCache]: Analyzing trace with hash 138210329, now seen corresponding path program 1 times [2023-04-01 11:07:21,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:07:21,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994267477] [2023-04-01 11:07:21,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:07:21,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:07:21,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:07:21,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:07:21,970 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 11:07:21,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994267477] [2023-04-01 11:07:21,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994267477] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 11:07:21,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846614909] [2023-04-01 11:07:21,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:07:21,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 11:07:21,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 11:07:21,974 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 11:07:21,975 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 11:07:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:07:22,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 19 conjunts are in the unsatisfiable core [2023-04-01 11:07:22,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 11:07:22,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:07:22,340 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 11:07:22,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:07:22,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846614909] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 11:07:22,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [879873949] [2023-04-01 11:07:22,491 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-04-01 11:07:22,491 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 11:07:22,495 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 11:07:22,500 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 11:07:22,501 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 11:07:22,875 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 111 for LOIs [2023-04-01 11:07:39,296 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2023-04-01 11:07:39,308 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 11:07:54,575 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '191#(and (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 328) 3) (= 24647 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 192)) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 452) 7) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 496) 0) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 428) 7) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 232) 1) (= 7 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 356)) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 444) 24657) (= 7 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 224)) (= 7 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 380)) (= 3 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 184)) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 500) 0) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 96) 24651) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 492) 0) (= 24643 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 12)) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 304) 1) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 196) 4) (= |main_~#main__Id_MCDC_119~0.base| main_~Id_MCDC_89__Id_MCDC_88~0.base) (= 7 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 272)) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 436) 0) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 208) 1) (= 24665 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 228)) (= 7 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 308)) (= (select |old(#valid)| 3) 1) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 52) 0) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 88) 2) (= 100 (select (select |#memory_int| 4) 4)) (= 24646 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 144)) (= 7 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 188)) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 176) 7) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 340) 4) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 76) 1) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 400) 1) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 160) 1) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 412) 2) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 440) 7) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 136) 1) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 392) 6) (= 110 (select (select |#memory_int| 4) 1)) (= 7 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 260)) (= 2 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 148)) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 348) 24648) (= 2 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 244)) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 312) 24663) (= (select |old(#valid)| 1) 1) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 268) 4) (= main_~__tmp_1~0.base main_~Id_MCDC_89__Id_MCDC_88~0.base) (= 3 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 44)) (= (select |old(#length)| 1) 2) (= 24647 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 156)) (= 7 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 248)) (= (select |old(#valid)| 0) 0) (= 2 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 112)) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 152) 7) (= (select |old(#length)| 5) 2) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 324) 24663) (= 24647 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 180)) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 128) 2) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 300) 24663) (= (select |old(#valid)| 5) 1) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 316) 2) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 460) 0) (= 7 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 320)) (= main_~Id_MCDC_89__Id_MCDC_88~0.offset 0) (= 24656 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 432)) (not (= |main_~#Id_MCDC_89__Id_MCDC_95~0.base| 0)) (= (select |old(#valid)| 4) 1) (= 3 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 256)) (= (select |old(#valid)| |main_~#main__Id_MCDC_119~0.base|) 0) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 60) 24654) (= 115 (select (select |#memory_int| 4) 5)) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 336) 24663) (= 24646 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 132)) (= |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 0) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 484) 0) (= 7 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 140)) (= 24642 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 0)) (not (= main_~__tmp_1~0.base 0)) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 264) 24665) (= 101 (select (select |#memory_int| 4) 3)) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 212) 7) (= main_~Id_MCDC_89____CPAchecker_TMP_1~0 0) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 468) 24645) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 360) 24648) (= 6 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 368)) (= main_~__VERIFIER_assert__Id_MCDC_92~0 0) (= main_~main__Id_MCDC_115~0 0) (not (= |#StackHeapBarrier| 0)) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 352) 1) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 292) 2) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 488) 3) (= (select (select |#memory_int| 4) 0) 105) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 84) 24652) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 104) 3) (= 46 (select (select |#memory_int| 4) 2)) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 56) 3) (= (select |old(#length)| 4) 7) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 108) 24651) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 80) 4) (= 3 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 8)) (= (select |old(#length)| 3) 12) (= 0 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 64)) (= 3 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 476)) (= main_~__tmp_2~0 0) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 384) 24649) (= 3 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 20)) (= 24659 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 24)) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 448) 0) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 36) 24660) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 424) 0) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 364) 2) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 408) 24650) (= |main_~#main__Id_MCDC_119~0.offset| 0) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 28) 0) (= 2 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 220)) (= 7 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 236)) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 464) 3) (= (select |old(#valid)| 6) 1) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 40) 0) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 472) 0) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 372) 24649) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 280) 1) (= 24652 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 72)) (= 24658 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 480)) (= 7 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 332)) (= 3 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 116)) (= 24662 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 276)) (= (select |old(#length)| 2) 25) (= 24644 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 456)) (= 7 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 296)) (= 24662 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 288)) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 48) 24661) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 376) 1) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 4) 0) (= main_~main__Id_MCDC_116~0 0) (= 7 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 200)) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 420) 24655) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 396) 24650) (= 24664 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 204)) (= 24665 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 240)) (= |#NULL.offset| 0) (= 24664 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 216)) (= 24647 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 168)) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 124) 0) (not (= |#StackHeapBarrier| main_~__tmp_1~0.base)) (= (select (select |#memory_int| 1) 0) 48) (= 2 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 388)) (= 7 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 284)) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 68) 7) (= |old(~Id_MCDC_93~0)| 0) (= 2 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 172)) (<= 42 (mod ~Id_MCDC_93~0 4294967296)) (= (select (select |#memory_int| 1) 1) 0) (= (select |old(#valid)| 2) 1) (= (select (select |#memory_int| 4) 6) 0) (= ~Id_MCDC_93~0 main_~Id_MCDC_89__Id_MCDC_96~0) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 92) 4) (= 19 (select |old(#length)| 6)) (= 24665 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 252)) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 404) 7) (= ~__return_main~0 0) (= 6 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 416)) (= (select (select |#memory_int| 5) 1) 0) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 164) 7) (= 7 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 344)) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 100) 1) (= (select (select |#memory_int| 5) 0) 114) (= main_~__tmp_1~0.offset 0) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 32) 3) (= |#NULL.base| 0) (= 24653 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 120)) (not (= |main_~#Id_MCDC_89__Id_MCDC_95~0.base| |#StackHeapBarrier|)) (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) 16) 0))' at error location [2023-04-01 11:07:54,576 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 11:07:54,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 11:07:54,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-04-01 11:07:54,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261543134] [2023-04-01 11:07:54,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 11:07:54,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 11:07:54,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 11:07:54,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 11:07:54,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2023-04-01 11:07:54,579 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:07:54,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 11:07:54,848 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2023-04-01 11:07:54,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-01 11:07:54,849 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-04-01 11:07:54,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 11:07:54,850 INFO L225 Difference]: With dead ends: 32 [2023-04-01 11:07:54,850 INFO L226 Difference]: Without dead ends: 30 [2023-04-01 11:07:54,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=172, Invalid=758, Unknown=0, NotChecked=0, Total=930 [2023-04-01 11:07:54,851 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 50 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 11:07:54,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 56 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 11:07:54,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-04-01 11:07:54,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2023-04-01 11:07:54,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:07:54,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2023-04-01 11:07:54,858 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2023-04-01 11:07:54,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 11:07:54,858 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2023-04-01 11:07:54,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:07:54,858 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2023-04-01 11:07:54,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-04-01 11:07:54,859 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:07:54,859 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 11:07:54,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 11:07:55,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 11:07:55,066 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:07:55,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:07:55,067 INFO L85 PathProgramCache]: Analyzing trace with hash -2040579183, now seen corresponding path program 2 times [2023-04-01 11:07:55,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:07:55,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307900410] [2023-04-01 11:07:55,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:07:55,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:07:55,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:07:55,623 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:07:55,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 11:07:55,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307900410] [2023-04-01 11:07:55,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307900410] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 11:07:55,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298885165] [2023-04-01 11:07:55,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-01 11:07:55,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 11:07:55,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 11:07:55,627 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 11:07:55,633 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 11:07:55,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-04-01 11:07:55,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 11:07:55,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 28 conjunts are in the unsatisfiable core [2023-04-01 11:07:55,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 11:07:56,035 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 11:07:56,035 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 23 treesize of output 17 [2023-04-01 11:07:56,171 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-01 11:07:56,171 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 11:07:56,751 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-01 11:07:56,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298885165] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 11:07:56,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [285862146] [2023-04-01 11:07:56,755 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-04-01 11:07:56,756 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 11:07:56,756 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 11:07:56,756 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 11:07:56,756 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 11:07:56,947 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 111 for LOIs [2023-04-01 11:08:12,681 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2023-04-01 11:08:12,689 INFO L180 IcfgInterpreter]: Interpretation finished