/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/float-benchs/zonotope_3.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 21:20:43,747 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 21:20:43,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 21:20:43,769 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 21:20:43,769 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 21:20:43,769 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 21:20:43,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 21:20:43,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 21:20:43,772 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 21:20:43,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 21:20:43,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 21:20:43,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 21:20:43,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 21:20:43,775 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 21:20:43,776 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 21:20:43,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 21:20:43,777 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 21:20:43,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 21:20:43,778 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 21:20:43,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 21:20:43,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 21:20:43,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 21:20:43,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 21:20:43,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 21:20:43,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 21:20:43,784 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 21:20:43,784 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 21:20:43,785 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 21:20:43,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 21:20:43,786 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 21:20:43,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 21:20:43,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 21:20:43,787 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 21:20:43,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 21:20:43,788 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 21:20:43,788 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 21:20:43,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 21:20:43,789 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 21:20:43,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 21:20:43,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 21:20:43,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 21:20:43,790 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 [2023-04-02 21:20:43,805 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 21:20:43,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 21:20:43,805 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 21:20:43,806 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 21:20:43,806 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 21:20:43,806 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 21:20:43,806 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 21:20:43,806 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 21:20:43,807 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 21:20:43,807 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 21:20:43,807 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 21:20:43,807 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 21:20:43,807 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 21:20:43,807 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 21:20:43,807 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 21:20:43,807 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 21:20:43,807 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 21:20:43,807 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 21:20:43,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 21:20:43,808 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 21:20:43,808 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 21:20:43,808 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 21:20:43,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 21:20:43,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 21:20:43,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 21:20:43,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 21:20:43,808 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 21:20:43,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 21:20:43,809 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 21:20:43,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 21:20:43,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 21:20:43,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 21:20:43,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 21:20:43,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 21:20:43,809 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 21:20:43,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 21:20:43,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 21:20:43,809 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 21:20:43,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 21:20:43,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 21:20:43,810 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 21:20:43,810 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 21:20:43,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 21:20:43,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 21:20:43,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 21:20:43,989 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 21:20:43,990 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 21:20:43,991 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/zonotope_3.c.v+lhb-reducer.c [2023-04-02 21:20:45,037 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 21:20:45,212 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 21:20:45,212 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_3.c.v+lhb-reducer.c [2023-04-02 21:20:45,231 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3226d8ba/60f9ccf75beb4abbabacd03f9159c955/FLAG1dc2aad97 [2023-04-02 21:20:45,243 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3226d8ba/60f9ccf75beb4abbabacd03f9159c955 [2023-04-02 21:20:45,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 21:20:45,246 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 21:20:45,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 21:20:45,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 21:20:45,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 21:20:45,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 09:20:45" (1/1) ... [2023-04-02 21:20:45,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ad87faa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:20:45, skipping insertion in model container [2023-04-02 21:20:45,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 09:20:45" (1/1) ... [2023-04-02 21:20:45,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 21:20:45,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 21:20:45,425 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/float-benchs/zonotope_3.c.v+lhb-reducer.c[12131,12144] [2023-04-02 21:20:45,432 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 21:20:45,441 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 21:20:45,487 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/float-benchs/zonotope_3.c.v+lhb-reducer.c[12131,12144] [2023-04-02 21:20:45,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 21:20:45,501 INFO L208 MainTranslator]: Completed translation [2023-04-02 21:20:45,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:20:45 WrapperNode [2023-04-02 21:20:45,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 21:20:45,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 21:20:45,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 21:20:45,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 21:20:45,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:20:45" (1/1) ... [2023-04-02 21:20:45,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:20:45" (1/1) ... [2023-04-02 21:20:45,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:20:45" (1/1) ... [2023-04-02 21:20:45,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:20:45" (1/1) ... [2023-04-02 21:20:45,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:20:45" (1/1) ... [2023-04-02 21:20:45,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:20:45" (1/1) ... [2023-04-02 21:20:45,568 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:20:45" (1/1) ... [2023-04-02 21:20:45,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:20:45" (1/1) ... [2023-04-02 21:20:45,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 21:20:45,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 21:20:45,572 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 21:20:45,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 21:20:45,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:20:45" (1/1) ... [2023-04-02 21:20:45,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 21:20:45,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 21:20:45,605 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) [2023-04-02 21:20:45,609 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 [2023-04-02 21:20:45,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 21:20:45,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 21:20:45,629 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 21:20:45,629 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 21:20:45,630 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 21:20:45,630 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 21:20:45,630 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 21:20:45,630 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 21:20:45,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 21:20:45,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2023-04-02 21:20:45,630 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 21:20:45,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 21:20:45,630 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-04-02 21:20:45,630 INFO L130 BoogieDeclarations]: Found specification of procedure g [2023-04-02 21:20:45,630 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 21:20:45,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 21:20:45,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 21:20:45,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 21:20:45,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 21:20:45,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 21:20:45,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 21:20:45,713 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 21:20:45,714 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 21:20:45,984 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 21:20:46,003 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 21:20:46,003 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 21:20:46,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 09:20:46 BoogieIcfgContainer [2023-04-02 21:20:46,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 21:20:46,007 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 21:20:46,007 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 21:20:46,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 21:20:46,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 09:20:45" (1/3) ... [2023-04-02 21:20:46,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f48c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 09:20:46, skipping insertion in model container [2023-04-02 21:20:46,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:20:45" (2/3) ... [2023-04-02 21:20:46,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f48c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 09:20:46, skipping insertion in model container [2023-04-02 21:20:46,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 09:20:46" (3/3) ... [2023-04-02 21:20:46,011 INFO L112 eAbstractionObserver]: Analyzing ICFG zonotope_3.c.v+lhb-reducer.c [2023-04-02 21:20:46,022 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 21:20:46,022 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 21:20:46,052 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 21:20:46,056 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;@5417cf94, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 21:20:46,056 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 21:20:46,059 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 52 states have (on average 1.8461538461538463) internal successors, (96), 53 states have internal predecessors, (96), 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) [2023-04-02 21:20:46,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-04-02 21:20:46,064 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:20:46,065 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:20:46,065 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:20:46,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:20:46,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1586671237, now seen corresponding path program 1 times [2023-04-02 21:20:46,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:20:46,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332086462] [2023-04-02 21:20:46,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:20:46,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:20:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:20:46,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:20:46,400 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:20:46,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332086462] [2023-04-02 21:20:46,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332086462] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 21:20:46,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 21:20:46,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 21:20:46,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966333656] [2023-04-02 21:20:46,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 21:20:46,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 21:20:46,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:20:46,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 21:20:46,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 21:20:46,424 INFO L87 Difference]: Start difference. First operand has 58 states, 52 states have (on average 1.8461538461538463) internal successors, (96), 53 states have internal predecessors, (96), 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 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2023-04-02 21:20:46,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:20:46,472 INFO L93 Difference]: Finished difference Result 72 states and 114 transitions. [2023-04-02 21:20:46,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 21:20:46,474 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 48 [2023-04-02 21:20:46,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:20:46,479 INFO L225 Difference]: With dead ends: 72 [2023-04-02 21:20:46,479 INFO L226 Difference]: Without dead ends: 54 [2023-04-02 21:20:46,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-04-02 21:20:46,484 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 93 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 21:20:46,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 303 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 21:20:46,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-04-02 21:20:46,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-04-02 21:20:46,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 50 states have (on average 1.08) internal successors, (54), 50 states have internal predecessors, (54), 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) [2023-04-02 21:20:46,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2023-04-02 21:20:46,512 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 48 [2023-04-02 21:20:46,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:20:46,513 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2023-04-02 21:20:46,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2023-04-02 21:20:46,513 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2023-04-02 21:20:46,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-04-02 21:20:46,514 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:20:46,514 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:20:46,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 21:20:46,514 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:20:46,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:20:46,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1601775274, now seen corresponding path program 1 times [2023-04-02 21:20:46,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:20:46,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253612619] [2023-04-02 21:20:46,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:20:46,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:20:46,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:20:46,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:20:46,819 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:20:46,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253612619] [2023-04-02 21:20:46,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253612619] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 21:20:46,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 21:20:46,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 21:20:46,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532009522] [2023-04-02 21:20:46,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 21:20:46,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 21:20:46,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:20:46,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 21:20:46,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-04-02 21:20:46,822 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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) [2023-04-02 21:20:46,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:20:46,862 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2023-04-02 21:20:46,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 21:20:46,862 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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 48 [2023-04-02 21:20:46,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:20:46,863 INFO L225 Difference]: With dead ends: 67 [2023-04-02 21:20:46,863 INFO L226 Difference]: Without dead ends: 60 [2023-04-02 21:20:46,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-04-02 21:20:46,865 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 6 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 21:20:46,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 116 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 21:20:46,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-04-02 21:20:46,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2023-04-02 21:20:46,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 52 states have (on average 1.0769230769230769) internal successors, (56), 52 states have internal predecessors, (56), 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) [2023-04-02 21:20:46,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2023-04-02 21:20:46,870 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 48 [2023-04-02 21:20:46,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:20:46,870 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2023-04-02 21:20:46,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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) [2023-04-02 21:20:46,871 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2023-04-02 21:20:46,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-04-02 21:20:46,872 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:20:46,872 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:20:46,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 21:20:46,872 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:20:46,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:20:46,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1523932248, now seen corresponding path program 1 times [2023-04-02 21:20:46,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:20:46,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196575505] [2023-04-02 21:20:46,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:20:46,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:20:46,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:20:46,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:20:46,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:20:46,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196575505] [2023-04-02 21:20:46,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196575505] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 21:20:46,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 21:20:46,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 21:20:46,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739737671] [2023-04-02 21:20:46,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 21:20:46,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 21:20:46,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:20:46,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 21:20:46,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 21:20:46,927 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2023-04-02 21:20:46,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:20:46,934 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2023-04-02 21:20:46,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 21:20:46,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 53 [2023-04-02 21:20:46,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:20:46,936 INFO L225 Difference]: With dead ends: 70 [2023-04-02 21:20:46,936 INFO L226 Difference]: Without dead ends: 55 [2023-04-02 21:20:46,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 21:20:46,937 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 21:20:46,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 21:20:46,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-04-02 21:20:46,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2023-04-02 21:20:46,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 51 states have internal predecessors, (53), 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) [2023-04-02 21:20:46,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2023-04-02 21:20:46,941 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 53 [2023-04-02 21:20:46,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:20:46,941 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2023-04-02 21:20:46,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2023-04-02 21:20:46,942 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2023-04-02 21:20:46,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-04-02 21:20:46,942 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:20:46,942 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:20:46,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 21:20:46,943 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:20:46,943 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:20:46,943 INFO L85 PathProgramCache]: Analyzing trace with hash -932624995, now seen corresponding path program 1 times [2023-04-02 21:20:46,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:20:46,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588595194] [2023-04-02 21:20:46,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:20:46,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:20:46,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:20:47,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:20:47,122 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:20:47,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588595194] [2023-04-02 21:20:47,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588595194] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 21:20:47,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601243866] [2023-04-02 21:20:47,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:20:47,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 21:20:47,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 21:20:47,125 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) [2023-04-02 21:20:47,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 21:20:47,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:20:47,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 12 conjunts are in the unsatisfiable core [2023-04-02 21:20:47,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 21:20:47,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:20:47,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 21:20:47,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:20:47,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601243866] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 21:20:47,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1478913222] [2023-04-02 21:20:47,654 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2023-04-02 21:20:47,654 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 21:20:47,658 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 21:20:47,661 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 21:20:47,662 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 21:20:48,649 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 200 for LOIs [2023-04-02 21:22:04,501 WARN L223 SmtUtils]: Spent 1.17m on a formula simplification. DAG size of input: 10708 DAG size of output: 429 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-04-02 21:22:08,394 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 151 for LOIs [2023-04-02 21:22:08,448 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 21:22:34,793 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '869#(and (= (* 2.0 |old(~__return_120202~0)|) 0.0) (= (* 2.0 |old(~__return_120338~0)|) 0.0) (= (* main_~__tmp_4~0 2.0) (/ 1.0 2.0)) (= ~__tmp_120439_1~0 1) (= (* 2.0 |old(~__return_120226~0)|) 0.0) (= (* 2.0 |old(~__return_120486~0)|) 0.0) (= ~__return_120239~0 main_~main____CPAchecker_TMP_1~1) (= |old(~__return_120502~0)| 0) (= main_~f__x~5 main_~__tmp_11~0) (= main_~f__x~9 main_~__tmp_19~0) (= (* 2.0 |old(~__return_120239~0)|) 0.0) (= (* 2.0 |old(~__return_120258~0)|) 0.0) (= (* 2.0 |old(~__return_120407~0)|) 0.0) (= ~__return_120379~0 main_~main____CPAchecker_TMP_1~6) (= (* 2.0 |old(~__return_120254~0)|) 0.0) (= 0.0 (* 2.0 |old(~__return_120481~0)|)) (= (* 2.0 |old(~__return_120180~0)|) 0.0) (= (* 2.0 |old(~__return_120286~0)|) 0.0) (= (* 2.0 |old(~__return_120310~0)|) 0.0) (= ~__tmp_120439_0~0 main_~main____CPAchecker_TMP_1~8) (= main_~main____CPAchecker_TMP_0~0 1) (= (* 2.0 |old(~__return_120176~0)|) 0.0) (= (* 2.0 |old(~__return_120172~0)|) 0.0) (= 0.0 (* 2.0 |old(~__return_120398~0)|)) (= ~__return_120262~0 main_~__tmp_16~0) (= (* 2.0 |old(~__return_120211~0)|) 0.0) (= main_~main____CPAchecker_TMP_0~8 1) (= (* 2.0 |old(~__return_120422~0)|) 0.0) (= (* 2.0 |old(~__return_120473~0)|) 0.0) (= main_~f__x~19 main_~__tmp_39~0) (= main_~__tmp_9~0 main_~__tmp_10~0) (= ~__return_120267~0 main_~main____CPAchecker_TMP_1~2) (= ~__return_120502~0 0) (= main_~g__x~5 ~__return_120234~0) (= (* 2.0 |old(~__return_120323~0)|) 0.0) (= (* 2.0 |old(~__return_120402~0)|) 0.0) (= main_~__VERIFIER_assert__cond~0 0) (< 100000 main_~main__i~0) (= main_~__tmp_8~0 ~__return_120206~0) (= main_~g__x~19 main_~__tmp_40~0) (= (* 2.0 |old(~__return_120198~0)|) 0.0) (= main_~f__x~4 main_~g__x~4) (= main_~main____CPAchecker_TMP_0~2 1) (= (* 2.0 |old(~__return_120230~0)|) 0.0) (= ~__return_120402~0 main_~__tmp_36~0) (= main_~g__x~13 main_~__tmp_28~0) (= main_~g__x~7 ~__return_120262~0) (= main_~main____CPAchecker_TMP_0~5 1) (= (/ 3.0 2.0) (* main_~f__x~1 2.0)) (= (* 2.0 |old(~__return_120366~0)|) 0.0) (= ~__return_120295~0 main_~main____CPAchecker_TMP_1~3) (= main_~__tmp_17~0 main_~__tmp_18~0) (= (* 2.0 |old(~__return_120206~0)|) 0.0) (= main_~f__x~16 main_~__tmp_33~0) (= ~__return_120407~0 main_~main____CPAchecker_TMP_1~7) (= main_~__tmp_30~0 main_~__tmp_29~0) (= main_~__tmp_6~0 main_~__tmp_5~0) (= ~__return_120211~0 main_~main____CPAchecker_TMP_1~0) (= main_~__tmp_14~0 main_~__tmp_13~0) (= main_~g__x~6 main_~__tmp_13~0) (= main_~__tmp_21~0 main_~__tmp_22~0) (= main_~g__x~17 main_~__tmp_36~0) (= (* 2.0 |old(~__return_120394~0)|) 0.0) (= main_~g__x~9 main_~__tmp_20~0) (= ~__return_120234~0 main_~__tmp_12~0) (= main_~main____CPAchecker_TMP_0~7 1) (= (* 2.0 |old(~__return_120379~0)|) 0.0) (= main_~g__x~19 ~__return_120430~0) (= |old(~__tmp_120439_1~0)| 0) (= main_~f__x~13 main_~__tmp_27~0) (= (* 2.0 |old(~__return_120477~0)|) 0.0) (= ~__return_120290~0 main_~__tmp_20~0) (= main_~__tmp_7~0 main_~f__x~3) (= (* 2.0 |old(~__return_120234~0)|) 0.0) (<= (+ (to_real (- |#StackHeapBarrier|)) 1.0) 0.0) (= main_~f__x~18 main_~__tmp_37~0) (= (* main_~__tmp_1~0 2.0) 0.0) (= main_~__tmp_25~0 main_~__tmp_26~0) (= (* |old(~__tmp_120439_0~0)| 2.0) 0.0) (= 0.0 (* 2.0 |old(~__return_120430~0)|)) (= ~__return_120346~0 main_~__tmp_28~0) (= main_~main____CPAchecker_TMP_0~3 1) (= (/ 3.0 2.0) (* main_~__tmp_3~0 2.0)) (= ~__return_120323~0 main_~main____CPAchecker_TMP_1~4) (= main_~__tmp_5~0 main_~f__x~2) (= main_~main____CPAchecker_TMP_0~1 1) (= (* 2.0 |old(~__return_120184~0)|) 0.0) (= main_~g__x~11 ~__return_120318~0) (= main_~g__x~16 main_~__tmp_33~0) (= main_~g__x~3 ~__return_120206~0) (= main_~main____CPAchecker_TMP_0~4 1) (= main_~main____CPAchecker_TMP_0~6 1) (= main_~g__x~11 main_~__tmp_24~0) (= (* 2.0 |old(~__return_120346~0)|) 0.0) (= main_~f__x~10 main_~__tmp_21~0) (= (* 2.0 |old(~__return_120282~0)|) 0.0) (= (* main_~__tmp_2~0 2.0) 0.0) (= main_~g__x~18 main_~f__x~18) (= main_~g__x~14 main_~f__x~14) (= (* main_~g__x~0 2.0) 0.0) (= (* 2.0 |old(~__return_120314~0)|) 0.0) (= (* 2.0 |old(~__return_120267~0)|) 0.0) (= main_~main____CPAchecker_TMP_2~0 0) (= (* main_~g__x~1 2.0) (/ 1.0 2.0)) (= |#NULL.offset| 0) (= main_~g__x~12 main_~__tmp_25~0) (= main_~__tmp_34~0 main_~__tmp_33~0) (= main_~g__x~8 main_~__tmp_17~0) (= main_~f__x~15 main_~__tmp_31~0) (= (* 2.0 |old(~__return_120351~0)|) 0.0) (= (* 2.0 |old(~__return_120262~0)|) 0.0) (= ~__return_120374~0 main_~__tmp_32~0) (= main_~f__x~18 main_~__tmp_38~0) (= (* 2.0 |old(~__return_120342~0)|) 0.0) (= (* 2.0 |old(~__return_120370~0)|) 0.0) (= main_~__tmp_45~0 0) (= (* 2.0 |old(~__return_120295~0)|) 0.0) (= (* 2.0 |old(~__return_120318~0)|) 0.0) (= main_~f__x~3 ~__return_120184~0) (= (* 2.0 |old(~__return_120426~0)|) 0.0) (= main_~g__x~10 main_~f__x~10) (= main_~g__x~15 ~__return_120374~0) (= main_~f__x~11 main_~__tmp_23~0) (= (* 2.0 |old(~__return_120374~0)|) 0.0) (= ~__return_main~0 0) (= main_~f__x~2 main_~g__x~2) (= main_~g__x~4 main_~__tmp_10~0) (= main_~f__x~7 main_~__tmp_15~0) (= main_~g__x~14 main_~__tmp_30~0) (= (* 2.0 |old(~__return_120290~0)|) 0.0) (= main_~f__x~12 main_~__tmp_25~0) (= (* 2.0 |old(~__return_120435~0)|) 0.0) (= main_~f__x~17 main_~__tmp_35~0) (= main_~f__x~8 main_~__tmp_18~0) (= ~__return_120351~0 main_~main____CPAchecker_TMP_1~5) (= |#NULL.base| 0) (= (* main_~f__x~0 2.0) 0.0) (= main_~f__x~6 main_~__tmp_14~0))' at error location [2023-04-02 21:22:34,794 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 21:22:34,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 21:22:34,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2023-04-02 21:22:34,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920338368] [2023-04-02 21:22:34,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 21:22:34,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-04-02 21:22:34,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:22:34,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-04-02 21:22:34,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=870, Invalid=2912, Unknown=0, NotChecked=0, Total=3782 [2023-04-02 21:22:34,798 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand has 25 states, 25 states have (on average 3.96) internal successors, (99), 25 states have internal predecessors, (99), 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) [2023-04-02 21:22:34,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:22:34,901 INFO L93 Difference]: Finished difference Result 122 states and 135 transitions. [2023-04-02 21:22:34,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-02 21:22:34,901 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.96) internal successors, (99), 25 states have internal predecessors, (99), 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 53 [2023-04-02 21:22:34,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:22:34,907 INFO L225 Difference]: With dead ends: 122 [2023-04-02 21:22:34,907 INFO L226 Difference]: Without dead ends: 115 [2023-04-02 21:22:34,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2101 ImplicationChecksByTransitivity, 26.5s TimeCoverageRelationStatistics Valid=870, Invalid=2912, Unknown=0, NotChecked=0, Total=3782 [2023-04-02 21:22:34,909 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 87 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 21:22:34,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 178 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 21:22:34,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-04-02 21:22:34,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-04-02 21:22:34,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 111 states have (on average 1.018018018018018) internal successors, (113), 111 states have internal predecessors, (113), 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) [2023-04-02 21:22:34,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2023-04-02 21:22:34,915 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 53 [2023-04-02 21:22:34,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:22:34,915 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2023-04-02 21:22:34,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.96) internal successors, (99), 25 states have internal predecessors, (99), 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) [2023-04-02 21:22:34,915 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2023-04-02 21:22:34,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-04-02 21:22:34,916 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:22:34,917 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:22:34,930 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-02 21:22:35,131 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 [2023-04-02 21:22:35,131 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:22:35,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:22:35,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1835710045, now seen corresponding path program 2 times [2023-04-02 21:22:35,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:22:35,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676412405] [2023-04-02 21:22:35,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:22:35,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:22:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:22:35,730 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:22:35,731 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:22:35,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676412405] [2023-04-02 21:22:35,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676412405] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 21:22:35,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13498816] [2023-04-02 21:22:35,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 21:22:35,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 21:22:35,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 21:22:35,746 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) [2023-04-02 21:22:35,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 21:22:36,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2023-04-02 21:22:36,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 21:22:36,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 1365 conjuncts, 24 conjunts are in the unsatisfiable core [2023-04-02 21:22:36,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 21:22:36,127 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:22:36,127 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 21:22:36,745 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:22:36,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13498816] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 21:22:36,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1151749760] [2023-04-02 21:22:36,748 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2023-04-02 21:22:36,748 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 21:22:36,748 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 21:22:36,748 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 21:22:36,748 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 21:22:37,202 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 200 for LOIs [2023-04-02 21:23:51,513 WARN L223 SmtUtils]: Spent 1.16m on a formula simplification. DAG size of input: 10708 DAG size of output: 429 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-04-02 21:23:54,992 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 151 for LOIs [2023-04-02 21:23:55,043 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 21:24:21,296 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1935#(and (= (* 2.0 |old(~__return_120202~0)|) 0.0) (= (* 2.0 |old(~__return_120338~0)|) 0.0) (= (* main_~__tmp_4~0 2.0) (/ 1.0 2.0)) (= ~__tmp_120439_1~0 1) (= (* 2.0 |old(~__return_120226~0)|) 0.0) (= (* 2.0 |old(~__return_120486~0)|) 0.0) (= ~__return_120239~0 main_~main____CPAchecker_TMP_1~1) (= |old(~__return_120502~0)| 0) (= main_~f__x~5 main_~__tmp_11~0) (= main_~f__x~9 main_~__tmp_19~0) (= (* 2.0 |old(~__return_120239~0)|) 0.0) (= (* 2.0 |old(~__return_120258~0)|) 0.0) (= (* 2.0 |old(~__return_120407~0)|) 0.0) (= ~__return_120379~0 main_~main____CPAchecker_TMP_1~6) (= (* 2.0 |old(~__return_120254~0)|) 0.0) (= 0.0 (* 2.0 |old(~__return_120481~0)|)) (= (* 2.0 |old(~__return_120180~0)|) 0.0) (= (* 2.0 |old(~__return_120286~0)|) 0.0) (= (* 2.0 |old(~__return_120310~0)|) 0.0) (= ~__tmp_120439_0~0 main_~main____CPAchecker_TMP_1~8) (= main_~main____CPAchecker_TMP_0~0 1) (= (* 2.0 |old(~__return_120176~0)|) 0.0) (= (* 2.0 |old(~__return_120172~0)|) 0.0) (= 0.0 (* 2.0 |old(~__return_120398~0)|)) (= ~__return_120262~0 main_~__tmp_16~0) (= (* 2.0 |old(~__return_120211~0)|) 0.0) (= main_~main____CPAchecker_TMP_0~8 1) (= (* 2.0 |old(~__return_120422~0)|) 0.0) (= (* 2.0 |old(~__return_120473~0)|) 0.0) (= main_~f__x~19 main_~__tmp_39~0) (= main_~__tmp_9~0 main_~__tmp_10~0) (= ~__return_120267~0 main_~main____CPAchecker_TMP_1~2) (= ~__return_120502~0 0) (= main_~g__x~5 ~__return_120234~0) (= (* 2.0 |old(~__return_120323~0)|) 0.0) (= (* 2.0 |old(~__return_120402~0)|) 0.0) (= main_~__VERIFIER_assert__cond~0 0) (< 100000 main_~main__i~0) (= main_~__tmp_8~0 ~__return_120206~0) (= main_~g__x~19 main_~__tmp_40~0) (= (* 2.0 |old(~__return_120198~0)|) 0.0) (= main_~f__x~4 main_~g__x~4) (= main_~main____CPAchecker_TMP_0~2 1) (= (* 2.0 |old(~__return_120230~0)|) 0.0) (= ~__return_120402~0 main_~__tmp_36~0) (= main_~g__x~13 main_~__tmp_28~0) (= main_~g__x~7 ~__return_120262~0) (= main_~main____CPAchecker_TMP_0~5 1) (= (/ 3.0 2.0) (* main_~f__x~1 2.0)) (= (* 2.0 |old(~__return_120366~0)|) 0.0) (= ~__return_120295~0 main_~main____CPAchecker_TMP_1~3) (= main_~__tmp_17~0 main_~__tmp_18~0) (= (* 2.0 |old(~__return_120206~0)|) 0.0) (= main_~f__x~16 main_~__tmp_33~0) (= ~__return_120407~0 main_~main____CPAchecker_TMP_1~7) (= main_~__tmp_30~0 main_~__tmp_29~0) (= main_~__tmp_6~0 main_~__tmp_5~0) (= ~__return_120211~0 main_~main____CPAchecker_TMP_1~0) (= main_~__tmp_14~0 main_~__tmp_13~0) (= main_~g__x~6 main_~__tmp_13~0) (= main_~__tmp_21~0 main_~__tmp_22~0) (= main_~g__x~17 main_~__tmp_36~0) (= (* 2.0 |old(~__return_120394~0)|) 0.0) (= main_~g__x~9 main_~__tmp_20~0) (= ~__return_120234~0 main_~__tmp_12~0) (= main_~main____CPAchecker_TMP_0~7 1) (= (* 2.0 |old(~__return_120379~0)|) 0.0) (= main_~g__x~19 ~__return_120430~0) (= |old(~__tmp_120439_1~0)| 0) (= main_~f__x~13 main_~__tmp_27~0) (= (* 2.0 |old(~__return_120477~0)|) 0.0) (= ~__return_120290~0 main_~__tmp_20~0) (= main_~__tmp_7~0 main_~f__x~3) (= (* 2.0 |old(~__return_120234~0)|) 0.0) (<= (+ (to_real (- |#StackHeapBarrier|)) 1.0) 0.0) (= main_~f__x~18 main_~__tmp_37~0) (= (* main_~__tmp_1~0 2.0) 0.0) (= main_~__tmp_25~0 main_~__tmp_26~0) (= (* |old(~__tmp_120439_0~0)| 2.0) 0.0) (= 0.0 (* 2.0 |old(~__return_120430~0)|)) (= ~__return_120346~0 main_~__tmp_28~0) (= main_~main____CPAchecker_TMP_0~3 1) (= (/ 3.0 2.0) (* main_~__tmp_3~0 2.0)) (= ~__return_120323~0 main_~main____CPAchecker_TMP_1~4) (= main_~__tmp_5~0 main_~f__x~2) (= main_~main____CPAchecker_TMP_0~1 1) (= (* 2.0 |old(~__return_120184~0)|) 0.0) (= main_~g__x~11 ~__return_120318~0) (= main_~g__x~16 main_~__tmp_33~0) (= main_~g__x~3 ~__return_120206~0) (= main_~main____CPAchecker_TMP_0~4 1) (= main_~main____CPAchecker_TMP_0~6 1) (= main_~g__x~11 main_~__tmp_24~0) (= (* 2.0 |old(~__return_120346~0)|) 0.0) (= main_~f__x~10 main_~__tmp_21~0) (= (* 2.0 |old(~__return_120282~0)|) 0.0) (= (* main_~__tmp_2~0 2.0) 0.0) (= main_~g__x~18 main_~f__x~18) (= main_~g__x~14 main_~f__x~14) (= (* main_~g__x~0 2.0) 0.0) (= (* 2.0 |old(~__return_120314~0)|) 0.0) (= (* 2.0 |old(~__return_120267~0)|) 0.0) (= main_~main____CPAchecker_TMP_2~0 0) (= (* main_~g__x~1 2.0) (/ 1.0 2.0)) (= |#NULL.offset| 0) (= main_~g__x~12 main_~__tmp_25~0) (= main_~__tmp_34~0 main_~__tmp_33~0) (= main_~g__x~8 main_~__tmp_17~0) (= main_~f__x~15 main_~__tmp_31~0) (= (* 2.0 |old(~__return_120351~0)|) 0.0) (= (* 2.0 |old(~__return_120262~0)|) 0.0) (= ~__return_120374~0 main_~__tmp_32~0) (= main_~f__x~18 main_~__tmp_38~0) (= (* 2.0 |old(~__return_120342~0)|) 0.0) (= (* 2.0 |old(~__return_120370~0)|) 0.0) (= main_~__tmp_45~0 0) (= (* 2.0 |old(~__return_120295~0)|) 0.0) (= (* 2.0 |old(~__return_120318~0)|) 0.0) (= main_~f__x~3 ~__return_120184~0) (= (* 2.0 |old(~__return_120426~0)|) 0.0) (= main_~g__x~10 main_~f__x~10) (= main_~g__x~15 ~__return_120374~0) (= main_~f__x~11 main_~__tmp_23~0) (= (* 2.0 |old(~__return_120374~0)|) 0.0) (= ~__return_main~0 0) (= main_~f__x~2 main_~g__x~2) (= main_~g__x~4 main_~__tmp_10~0) (= main_~f__x~7 main_~__tmp_15~0) (= main_~g__x~14 main_~__tmp_30~0) (= (* 2.0 |old(~__return_120290~0)|) 0.0) (= main_~f__x~12 main_~__tmp_25~0) (= (* 2.0 |old(~__return_120435~0)|) 0.0) (= main_~f__x~17 main_~__tmp_35~0) (= main_~f__x~8 main_~__tmp_18~0) (= ~__return_120351~0 main_~main____CPAchecker_TMP_1~5) (= |#NULL.base| 0) (= (* main_~f__x~0 2.0) 0.0) (= main_~f__x~6 main_~__tmp_14~0))' at error location [2023-04-02 21:24:21,296 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 21:24:21,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 21:24:21,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2023-04-02 21:24:21,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39902931] [2023-04-02 21:24:21,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 21:24:21,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-04-02 21:24:21,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:24:21,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-04-02 21:24:21,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2370, Invalid=4940, Unknown=0, NotChecked=0, Total=7310 [2023-04-02 21:24:21,301 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand has 49 states, 49 states have (on average 4.469387755102041) internal successors, (219), 49 states have internal predecessors, (219), 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) [2023-04-02 21:24:21,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:24:21,454 INFO L93 Difference]: Finished difference Result 242 states and 267 transitions. [2023-04-02 21:24:21,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-04-02 21:24:21,455 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 4.469387755102041) internal successors, (219), 49 states have internal predecessors, (219), 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 113 [2023-04-02 21:24:21,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:24:21,456 INFO L225 Difference]: With dead ends: 242 [2023-04-02 21:24:21,456 INFO L226 Difference]: Without dead ends: 235 [2023-04-02 21:24:21,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3793 ImplicationChecksByTransitivity, 26.9s TimeCoverageRelationStatistics Valid=2370, Invalid=4940, Unknown=0, NotChecked=0, Total=7310 [2023-04-02 21:24:21,458 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 68 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 21:24:21,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 214 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 21:24:21,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2023-04-02 21:24:21,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2023-04-02 21:24:21,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 231 states have (on average 1.0086580086580086) internal successors, (233), 231 states have internal predecessors, (233), 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) [2023-04-02 21:24:21,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 236 transitions. [2023-04-02 21:24:21,483 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 236 transitions. Word has length 113 [2023-04-02 21:24:21,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:24:21,484 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 236 transitions. [2023-04-02 21:24:21,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 4.469387755102041) internal successors, (219), 49 states have internal predecessors, (219), 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) [2023-04-02 21:24:21,484 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 236 transitions. [2023-04-02 21:24:21,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-04-02 21:24:21,486 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:24:21,486 INFO L195 NwaCegarLoop]: trace histogram [38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:24:21,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 21:24:21,705 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 [2023-04-02 21:24:21,705 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:24:21,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:24:21,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1737574435, now seen corresponding path program 3 times [2023-04-02 21:24:21,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:24:21,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174756598] [2023-04-02 21:24:21,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:24:21,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:24:21,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:24:23,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:24:23,191 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:24:23,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174756598] [2023-04-02 21:24:23,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174756598] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 21:24:23,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821789396] [2023-04-02 21:24:23,192 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 21:24:23,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 21:24:23,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 21:24:23,193 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) [2023-04-02 21:24:23,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 21:24:23,590 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 21:24:23,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 21:24:23,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 2325 conjuncts, 48 conjunts are in the unsatisfiable core [2023-04-02 21:24:23,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 21:24:23,831 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:24:23,831 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 21:24:26,090 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:24:26,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821789396] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 21:24:26,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [971867998] [2023-04-02 21:24:26,094 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2023-04-02 21:24:26,094 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 21:24:26,094 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 21:24:26,094 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 21:24:26,094 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 21:24:26,560 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 200 for LOIs