/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/nla-digbench-scaling/egcd3-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 22:57:08,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 22:57:08,449 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 22:57:08,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 22:57:08,479 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 22:57:08,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 22:57:08,484 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 22:57:08,487 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 22:57:08,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 22:57:08,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 22:57:08,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 22:57:08,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 22:57:08,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 22:57:08,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 22:57:08,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 22:57:08,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 22:57:08,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 22:57:08,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 22:57:08,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 22:57:08,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 22:57:08,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 22:57:08,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 22:57:08,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 22:57:08,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 22:57:08,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 22:57:08,516 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 22:57:08,516 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 22:57:08,517 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 22:57:08,517 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 22:57:08,518 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 22:57:08,518 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 22:57:08,519 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 22:57:08,520 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 22:57:08,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 22:57:08,521 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 22:57:08,521 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 22:57:08,522 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 22:57:08,522 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 22:57:08,522 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 22:57:08,523 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 22:57:08,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 22:57:08,524 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 22:57:08,547 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 22:57:08,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 22:57:08,548 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 22:57:08,548 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 22:57:08,549 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 22:57:08,549 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 22:57:08,549 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 22:57:08,549 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 22:57:08,549 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 22:57:08,549 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 22:57:08,550 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 22:57:08,550 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 22:57:08,550 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 22:57:08,550 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 22:57:08,550 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 22:57:08,550 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 22:57:08,551 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 22:57:08,551 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 22:57:08,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 22:57:08,551 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 22:57:08,551 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 22:57:08,552 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 22:57:08,552 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 22:57:08,552 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 22:57:08,552 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 22:57:08,552 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 22:57:08,552 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 22:57:08,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 22:57:08,552 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 22:57:08,553 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 22:57:08,553 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 22:57:08,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 22:57:08,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 22:57:08,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 22:57:08,553 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 22:57:08,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 22:57:08,554 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 22:57:08,554 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 22:57:08,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 22:57:08,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 22:57:08,554 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 22:57:08,554 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 22:57:08,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 22:57:08,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 22:57:08,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 22:57:08,784 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 22:57:08,785 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 22:57:08,785 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c [2023-04-02 22:57:09,808 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 22:57:09,934 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 22:57:09,935 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c [2023-04-02 22:57:09,938 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae5d41dcc/a70ee1893fa94529a1aba9cd2cfba554/FLAGf4140d05f [2023-04-02 22:57:09,947 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae5d41dcc/a70ee1893fa94529a1aba9cd2cfba554 [2023-04-02 22:57:09,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 22:57:09,949 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 22:57:09,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 22:57:09,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 22:57:09,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 22:57:09,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 10:57:09" (1/1) ... [2023-04-02 22:57:09,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30c6b5b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:57:09, skipping insertion in model container [2023-04-02 22:57:09,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 10:57:09" (1/1) ... [2023-04-02 22:57:09,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 22:57:09,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 22:57:10,061 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/nla-digbench-scaling/egcd3-ll_valuebound1.c[490,503] [2023-04-02 22:57:10,083 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 22:57:10,095 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 22:57:10,103 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/nla-digbench-scaling/egcd3-ll_valuebound1.c[490,503] [2023-04-02 22:57:10,122 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 22:57:10,131 INFO L208 MainTranslator]: Completed translation [2023-04-02 22:57:10,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:57:10 WrapperNode [2023-04-02 22:57:10,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 22:57:10,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 22:57:10,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 22:57:10,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 22:57:10,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:57:10" (1/1) ... [2023-04-02 22:57:10,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:57:10" (1/1) ... [2023-04-02 22:57:10,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:57:10" (1/1) ... [2023-04-02 22:57:10,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:57:10" (1/1) ... [2023-04-02 22:57:10,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:57:10" (1/1) ... [2023-04-02 22:57:10,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:57:10" (1/1) ... [2023-04-02 22:57:10,166 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:57:10" (1/1) ... [2023-04-02 22:57:10,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:57:10" (1/1) ... [2023-04-02 22:57:10,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 22:57:10,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 22:57:10,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 22:57:10,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 22:57:10,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:57:10" (1/1) ... [2023-04-02 22:57:10,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 22:57:10,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:57:10,196 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 22:57:10,205 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 22:57:10,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 22:57:10,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 22:57:10,225 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 22:57:10,225 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 22:57:10,225 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 22:57:10,225 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 22:57:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 22:57:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 22:57:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 22:57:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 22:57:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 22:57:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 22:57:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 22:57:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 22:57:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 22:57:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 22:57:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 22:57:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 22:57:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 22:57:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 22:57:10,270 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 22:57:10,272 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 22:57:10,383 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 22:57:10,398 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 22:57:10,399 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-04-02 22:57:10,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 10:57:10 BoogieIcfgContainer [2023-04-02 22:57:10,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 22:57:10,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 22:57:10,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 22:57:10,404 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 22:57:10,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 10:57:09" (1/3) ... [2023-04-02 22:57:10,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3227bab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 10:57:10, skipping insertion in model container [2023-04-02 22:57:10,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:57:10" (2/3) ... [2023-04-02 22:57:10,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3227bab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 10:57:10, skipping insertion in model container [2023-04-02 22:57:10,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 10:57:10" (3/3) ... [2023-04-02 22:57:10,406 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound1.c [2023-04-02 22:57:10,417 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 22:57:10,417 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 22:57:10,445 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 22:57:10,449 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;@8244cd7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 22:57:10,449 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 22:57:10,452 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 20 states have internal predecessors, (27), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-04-02 22:57:10,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-04-02 22:57:10,457 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:57:10,457 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:57:10,458 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:57:10,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:57:10,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1897632913, now seen corresponding path program 1 times [2023-04-02 22:57:10,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:57:10,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257420165] [2023-04-02 22:57:10,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:57:10,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:57:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:57:10,575 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:57:10,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257420165] [2023-04-02 22:57:10,576 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-04-02 22:57:10,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862282628] [2023-04-02 22:57:10,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:57:10,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:57:10,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:57:10,580 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 22:57:10,605 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 22:57:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:57:10,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 1 conjunts are in the unsatisfiable core [2023-04-02 22:57:10,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:57:10,713 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 22:57:10,713 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 22:57:10,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862282628] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:57:10,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 22:57:10,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-02 22:57:10,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614516261] [2023-04-02 22:57:10,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:57:10,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-02 22:57:10,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:57:10,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-02 22:57:10,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-02 22:57:10,754 INFO L87 Difference]: Start difference. First operand has 36 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 20 states have internal predecessors, (27), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-04-02 22:57:10,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:57:10,790 INFO L93 Difference]: Finished difference Result 59 states and 87 transitions. [2023-04-02 22:57:10,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-02 22:57:10,792 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 24 [2023-04-02 22:57:10,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:57:10,797 INFO L225 Difference]: With dead ends: 59 [2023-04-02 22:57:10,797 INFO L226 Difference]: Without dead ends: 32 [2023-04-02 22:57:10,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-02 22:57:10,801 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 22:57:10,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 22:57:10,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-04-02 22:57:10,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-04-02 22:57:10,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-04-02 22:57:10,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2023-04-02 22:57:10,824 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 24 [2023-04-02 22:57:10,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:57:10,825 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2023-04-02 22:57:10,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-04-02 22:57:10,825 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2023-04-02 22:57:10,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-04-02 22:57:10,826 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:57:10,826 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:57:10,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 22:57:11,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-04-02 22:57:11,031 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:57:11,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:57:11,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1548109508, now seen corresponding path program 1 times [2023-04-02 22:57:11,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:57:11,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118914840] [2023-04-02 22:57:11,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:57:11,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:57:11,054 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:57:11,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1639790215] [2023-04-02 22:57:11,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:57:11,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:57:11,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:57:11,067 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 22:57:11,069 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 22:57:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:57:11,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-02 22:57:11,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:57:11,178 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-02 22:57:11,178 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 22:57:11,178 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:57:11,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118914840] [2023-04-02 22:57:11,179 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:57:11,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639790215] [2023-04-02 22:57:11,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639790215] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:57:11,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 22:57:11,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 22:57:11,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420119206] [2023-04-02 22:57:11,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:57:11,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 22:57:11,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:57:11,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 22:57:11,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 22:57:11,181 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-04-02 22:57:11,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:57:11,288 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2023-04-02 22:57:11,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 22:57:11,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 25 [2023-04-02 22:57:11,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:57:11,289 INFO L225 Difference]: With dead ends: 51 [2023-04-02 22:57:11,289 INFO L226 Difference]: Without dead ends: 44 [2023-04-02 22:57:11,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 22:57:11,291 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 30 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 22:57:11,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 84 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 22:57:11,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-04-02 22:57:11,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2023-04-02 22:57:11,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-04-02 22:57:11,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2023-04-02 22:57:11,298 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 25 [2023-04-02 22:57:11,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:57:11,298 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2023-04-02 22:57:11,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-04-02 22:57:11,298 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2023-04-02 22:57:11,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-04-02 22:57:11,299 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:57:11,299 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:57:11,306 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 22:57:11,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-04-02 22:57:11,504 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:57:11,504 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:57:11,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1414952, now seen corresponding path program 1 times [2023-04-02 22:57:11,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:57:11,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824416442] [2023-04-02 22:57:11,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:57:11,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:57:11,524 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:57:11,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1795901621] [2023-04-02 22:57:11,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:57:11,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:57:11,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:57:11,528 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 22:57:11,531 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 22:57:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:57:11,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 27 conjunts are in the unsatisfiable core [2023-04-02 22:57:11,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:57:11,863 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-02 22:57:11,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:57:11,986 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 22:57:11,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:57:11,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824416442] [2023-04-02 22:57:11,987 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:57:11,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795901621] [2023-04-02 22:57:11,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795901621] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-02 22:57:11,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 22:57:11,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-04-02 22:57:11,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814761401] [2023-04-02 22:57:11,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:57:11,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 22:57:11,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:57:11,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 22:57:11,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-04-02 22:57:11,989 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-04-02 22:57:12,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:57:12,066 INFO L93 Difference]: Finished difference Result 50 states and 64 transitions. [2023-04-02 22:57:12,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 22:57:12,066 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 28 [2023-04-02 22:57:12,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:57:12,067 INFO L225 Difference]: With dead ends: 50 [2023-04-02 22:57:12,067 INFO L226 Difference]: Without dead ends: 48 [2023-04-02 22:57:12,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-04-02 22:57:12,068 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 24 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 22:57:12,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 129 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 22:57:12,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-04-02 22:57:12,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2023-04-02 22:57:12,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 28 states have internal predecessors, (33), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-04-02 22:57:12,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 61 transitions. [2023-04-02 22:57:12,085 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 61 transitions. Word has length 28 [2023-04-02 22:57:12,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:57:12,085 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 61 transitions. [2023-04-02 22:57:12,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-04-02 22:57:12,086 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 61 transitions. [2023-04-02 22:57:12,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-04-02 22:57:12,086 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:57:12,086 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:57:12,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-02 22:57:12,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:57:12,293 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:57:12,294 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:57:12,294 INFO L85 PathProgramCache]: Analyzing trace with hash 2146803478, now seen corresponding path program 1 times [2023-04-02 22:57:12,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:57:12,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567881299] [2023-04-02 22:57:12,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:57:12,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:57:12,307 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:57:12,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1014101890] [2023-04-02 22:57:12,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:57:12,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:57:12,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:57:12,325 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:57:12,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 22:57:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:57:12,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjunts are in the unsatisfiable core [2023-04-02 22:57:12,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:57:12,417 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-02 22:57:12,417 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:57:12,478 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-02 22:57:12,478 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:57:12,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567881299] [2023-04-02 22:57:12,479 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:57:12,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014101890] [2023-04-02 22:57:12,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014101890] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:57:12,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [541262252] [2023-04-02 22:57:12,494 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2023-04-02 22:57:12,494 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:57:12,497 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:57:12,500 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:57:12,500 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:57:12,542 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:57:12,711 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 9 for LOIs [2023-04-02 22:57:12,712 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:57:12,717 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:57:12,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [541262252] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:57:12,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:57:12,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [7, 7] total 19 [2023-04-02 22:57:12,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655970536] [2023-04-02 22:57:12,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:57:12,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 22:57:12,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:57:12,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 22:57:12,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2023-04-02 22:57:12,945 INFO L87 Difference]: Start difference. First operand 47 states and 61 transitions. Second operand has 14 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-02 22:57:13,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:57:13,697 INFO L93 Difference]: Finished difference Result 76 states and 102 transitions. [2023-04-02 22:57:13,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 22:57:13,697 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 30 [2023-04-02 22:57:13,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:57:13,698 INFO L225 Difference]: With dead ends: 76 [2023-04-02 22:57:13,698 INFO L226 Difference]: Without dead ends: 57 [2023-04-02 22:57:13,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 68 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=217, Invalid=595, Unknown=0, NotChecked=0, Total=812 [2023-04-02 22:57:13,699 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 114 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 22:57:13,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 9 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 22:57:13,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-04-02 22:57:13,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 49. [2023-04-02 22:57:13,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 29 states have (on average 1.206896551724138) internal successors, (35), 30 states have internal predecessors, (35), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-04-02 22:57:13,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 63 transitions. [2023-04-02 22:57:13,713 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 63 transitions. Word has length 30 [2023-04-02 22:57:13,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:57:13,713 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 63 transitions. [2023-04-02 22:57:13,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-02 22:57:13,713 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 63 transitions. [2023-04-02 22:57:13,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-04-02 22:57:13,714 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:57:13,714 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:57:13,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-02 22:57:13,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:57:13,919 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:57:13,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:57:13,919 INFO L85 PathProgramCache]: Analyzing trace with hash -874024117, now seen corresponding path program 1 times [2023-04-02 22:57:13,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:57:13,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63977252] [2023-04-02 22:57:13,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:57:13,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:57:13,929 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:57:13,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1997657693] [2023-04-02 22:57:13,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:57:13,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:57:13,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:57:13,937 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:57:13,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-02 22:57:14,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:57:14,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 23 conjunts are in the unsatisfiable core [2023-04-02 22:57:14,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:57:14,133 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-02 22:57:14,133 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:57:14,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:57:14,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63977252] [2023-04-02 22:57:14,188 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:57:14,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997657693] [2023-04-02 22:57:14,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997657693] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 22:57:14,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1969497152] [2023-04-02 22:57:14,189 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2023-04-02 22:57:14,190 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:57:14,190 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:57:14,190 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:57:14,190 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:57:14,204 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:57:14,330 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 11 for LOIs [2023-04-02 22:57:14,333 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 9 for LOIs [2023-04-02 22:57:14,334 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:57:14,336 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:57:14,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1969497152] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:57:14,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 22:57:14,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [10] total 25 [2023-04-02 22:57:14,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052179320] [2023-04-02 22:57:14,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:57:14,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-02 22:57:14,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:57:14,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-02 22:57:14,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2023-04-02 22:57:14,655 INFO L87 Difference]: Start difference. First operand 49 states and 63 transitions. Second operand has 17 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 7 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-02 22:57:15,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:57:15,666 INFO L93 Difference]: Finished difference Result 93 states and 123 transitions. [2023-04-02 22:57:15,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 22:57:15,666 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 7 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 33 [2023-04-02 22:57:15,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:57:15,667 INFO L225 Difference]: With dead ends: 93 [2023-04-02 22:57:15,667 INFO L226 Difference]: Without dead ends: 61 [2023-04-02 22:57:15,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=328, Invalid=1312, Unknown=0, NotChecked=0, Total=1640 [2023-04-02 22:57:15,668 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 124 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 22:57:15,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 7 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 22:57:15,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-04-02 22:57:15,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2023-04-02 22:57:15,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 35 states have internal predecessors, (40), 19 states have call successors, (19), 6 states have call predecessors, (19), 5 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-04-02 22:57:15,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 76 transitions. [2023-04-02 22:57:15,681 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 76 transitions. Word has length 33 [2023-04-02 22:57:15,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:57:15,682 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 76 transitions. [2023-04-02 22:57:15,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 7 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-02 22:57:15,682 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 76 transitions. [2023-04-02 22:57:15,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-04-02 22:57:15,683 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:57:15,683 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:57:15,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-02 22:57:15,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:57:15,888 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:57:15,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:57:15,888 INFO L85 PathProgramCache]: Analyzing trace with hash 656042662, now seen corresponding path program 1 times [2023-04-02 22:57:15,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:57:15,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600609203] [2023-04-02 22:57:15,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:57:15,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:57:15,898 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:57:15,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [175683944] [2023-04-02 22:57:15,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:57:15,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:57:15,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:57:15,899 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:57:15,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-02 22:57:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:57:15,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 55 conjunts are in the unsatisfiable core [2023-04-02 22:57:15,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:57:16,425 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-04-02 22:57:16,425 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:57:16,895 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 22:57:16,895 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:57:16,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600609203] [2023-04-02 22:57:16,896 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:57:16,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175683944] [2023-04-02 22:57:16,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175683944] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:57:16,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [648644136] [2023-04-02 22:57:16,914 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2023-04-02 22:57:16,914 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:57:16,915 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:57:16,915 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:57:16,915 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:57:16,927 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:57:17,387 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 22:57:17,390 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 9 for LOIs [2023-04-02 22:57:17,390 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:57:17,392 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:57:18,721 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1949#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 22:57:18,722 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:57:18,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:57:18,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 27 [2023-04-02 22:57:18,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949879415] [2023-04-02 22:57:18,722 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:57:18,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-04-02 22:57:18,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:57:18,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-04-02 22:57:18,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=1686, Unknown=0, NotChecked=0, Total=1980 [2023-04-02 22:57:18,724 INFO L87 Difference]: Start difference. First operand 59 states and 76 transitions. Second operand has 27 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 20 states have internal predecessors, (44), 11 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 9 states have call predecessors, (16), 9 states have call successors, (16) [2023-04-02 22:57:29,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 22:57:30,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:57:30,205 INFO L93 Difference]: Finished difference Result 219 states and 318 transitions. [2023-04-02 22:57:30,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-04-02 22:57:30,206 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 20 states have internal predecessors, (44), 11 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 9 states have call predecessors, (16), 9 states have call successors, (16) Word has length 55 [2023-04-02 22:57:30,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:57:30,208 INFO L225 Difference]: With dead ends: 219 [2023-04-02 22:57:30,208 INFO L226 Difference]: Without dead ends: 198 [2023-04-02 22:57:30,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 116 SyntacticMatches, 6 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1718 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=831, Invalid=4719, Unknown=0, NotChecked=0, Total=5550 [2023-04-02 22:57:30,210 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 218 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-04-02 22:57:30,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 261 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-04-02 22:57:30,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-04-02 22:57:30,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 137. [2023-04-02 22:57:30,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 84 states have (on average 1.2380952380952381) internal successors, (104), 86 states have internal predecessors, (104), 45 states have call successors, (45), 8 states have call predecessors, (45), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-04-02 22:57:30,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 191 transitions. [2023-04-02 22:57:30,259 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 191 transitions. Word has length 55 [2023-04-02 22:57:30,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:57:30,259 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 191 transitions. [2023-04-02 22:57:30,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 20 states have internal predecessors, (44), 11 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 9 states have call predecessors, (16), 9 states have call successors, (16) [2023-04-02 22:57:30,259 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 191 transitions. [2023-04-02 22:57:30,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-04-02 22:57:30,260 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:57:30,260 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:57:30,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-02 22:57:30,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:57:30,464 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:57:30,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:57:30,464 INFO L85 PathProgramCache]: Analyzing trace with hash -683851796, now seen corresponding path program 2 times [2023-04-02 22:57:30,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:57:30,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365315842] [2023-04-02 22:57:30,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:57:30,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:57:30,475 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:57:30,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1101755500] [2023-04-02 22:57:30,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 22:57:30,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:57:30,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:57:30,477 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:57:30,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-02 22:57:30,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-04-02 22:57:30,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 22:57:30,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-02 22:57:30,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:57:30,551 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-04-02 22:57:30,551 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 22:57:30,551 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:57:30,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365315842] [2023-04-02 22:57:30,552 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:57:30,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101755500] [2023-04-02 22:57:30,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101755500] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:57:30,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 22:57:30,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 22:57:30,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602525668] [2023-04-02 22:57:30,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:57:30,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 22:57:30,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:57:30,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 22:57:30,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 22:57:30,554 INFO L87 Difference]: Start difference. First operand 137 states and 191 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-04-02 22:57:30,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:57:30,691 INFO L93 Difference]: Finished difference Result 182 states and 259 transitions. [2023-04-02 22:57:30,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 22:57:30,692 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 60 [2023-04-02 22:57:30,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:57:30,693 INFO L225 Difference]: With dead ends: 182 [2023-04-02 22:57:30,693 INFO L226 Difference]: Without dead ends: 163 [2023-04-02 22:57:30,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-04-02 22:57:30,694 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 19 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 22:57:30,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 130 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 22:57:30,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-04-02 22:57:30,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 141. [2023-04-02 22:57:30,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 88 states have (on average 1.2045454545454546) internal successors, (106), 90 states have internal predecessors, (106), 45 states have call successors, (45), 8 states have call predecessors, (45), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-04-02 22:57:30,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 193 transitions. [2023-04-02 22:57:30,756 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 193 transitions. Word has length 60 [2023-04-02 22:57:30,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:57:30,756 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 193 transitions. [2023-04-02 22:57:30,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-04-02 22:57:30,756 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 193 transitions. [2023-04-02 22:57:30,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-04-02 22:57:30,757 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:57:30,757 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:57:30,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-04-02 22:57:30,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:57:30,961 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:57:30,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:57:30,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1314785368, now seen corresponding path program 1 times [2023-04-02 22:57:30,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:57:30,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787360220] [2023-04-02 22:57:30,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:57:30,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:57:30,989 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:57:30,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [897840112] [2023-04-02 22:57:30,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:57:30,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:57:30,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:57:30,995 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:57:31,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-02 22:57:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:57:31,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-02 22:57:31,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:57:31,092 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-04-02 22:57:31,092 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 22:57:31,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:57:31,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787360220] [2023-04-02 22:57:31,094 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:57:31,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897840112] [2023-04-02 22:57:31,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897840112] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:57:31,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 22:57:31,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 22:57:31,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261783248] [2023-04-02 22:57:31,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:57:31,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 22:57:31,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:57:31,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 22:57:31,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-02 22:57:31,097 INFO L87 Difference]: Start difference. First operand 141 states and 193 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-04-02 22:57:31,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:57:31,154 INFO L93 Difference]: Finished difference Result 194 states and 255 transitions. [2023-04-02 22:57:31,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 22:57:31,154 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 63 [2023-04-02 22:57:31,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:57:31,156 INFO L225 Difference]: With dead ends: 194 [2023-04-02 22:57:31,156 INFO L226 Difference]: Without dead ends: 113 [2023-04-02 22:57:31,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-04-02 22:57:31,157 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 4 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 22:57:31,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 85 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 22:57:31,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-04-02 22:57:31,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112. [2023-04-02 22:57:31,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 73 states have (on average 1.1232876712328768) internal successors, (82), 74 states have internal predecessors, (82), 31 states have call successors, (31), 8 states have call predecessors, (31), 7 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-04-02 22:57:31,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 142 transitions. [2023-04-02 22:57:31,190 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 142 transitions. Word has length 63 [2023-04-02 22:57:31,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:57:31,190 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 142 transitions. [2023-04-02 22:57:31,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-04-02 22:57:31,191 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 142 transitions. [2023-04-02 22:57:31,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-04-02 22:57:31,191 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:57:31,191 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:57:31,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-02 22:57:31,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-04-02 22:57:31,397 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:57:31,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:57:31,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1537402187, now seen corresponding path program 1 times [2023-04-02 22:57:31,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:57:31,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648124851] [2023-04-02 22:57:31,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:57:31,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:57:31,407 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:57:31,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [878363729] [2023-04-02 22:57:31,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:57:31,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:57:31,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:57:31,409 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:57:31,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-02 22:57:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:57:31,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 22:57:31,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:57:31,530 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 34 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-04-02 22:57:31,530 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:57:31,645 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-04-02 22:57:31,646 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:57:31,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648124851] [2023-04-02 22:57:31,646 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:57:31,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878363729] [2023-04-02 22:57:31,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878363729] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:57:31,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [213339850] [2023-04-02 22:57:31,647 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2023-04-02 22:57:31,647 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:57:31,648 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:57:31,648 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:57:31,648 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:57:31,657 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:57:31,993 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 22:57:31,995 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 9 for LOIs [2023-04-02 22:57:31,995 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:57:31,997 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:57:32,665 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4338#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 22:57:32,665 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:57:32,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:57:32,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-04-02 22:57:32,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685908502] [2023-04-02 22:57:32,665 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:57:32,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 22:57:32,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:57:32,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 22:57:32,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=710, Unknown=0, NotChecked=0, Total=870 [2023-04-02 22:57:32,667 INFO L87 Difference]: Start difference. First operand 112 states and 142 transitions. Second operand has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2023-04-02 22:57:32,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:57:32,802 INFO L93 Difference]: Finished difference Result 112 states and 142 transitions. [2023-04-02 22:57:32,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 22:57:32,803 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 63 [2023-04-02 22:57:32,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:57:32,803 INFO L225 Difference]: With dead ends: 112 [2023-04-02 22:57:32,803 INFO L226 Difference]: Without dead ends: 0 [2023-04-02 22:57:32,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 152 SyntacticMatches, 8 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=208, Invalid=982, Unknown=0, NotChecked=0, Total=1190 [2023-04-02 22:57:32,804 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 17 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 22:57:32,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 148 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 22:57:32,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-02 22:57:32,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-02 22:57:32,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-02 22:57:32,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-02 22:57:32,811 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2023-04-02 22:57:32,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:57:32,811 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-02 22:57:32,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2023-04-02 22:57:32,811 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-02 22:57:32,811 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-02 22:57:32,829 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 22:57:32,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-02 22:57:33,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:57:33,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-02 22:57:34,168 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2023-04-02 22:57:34,168 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 4) no Hoare annotation was computed. [2023-04-02 22:57:34,168 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 7 9) the Hoare annotation is: true [2023-04-02 22:57:34,168 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2023-04-02 22:57:34,169 INFO L895 garLoopResultBuilder]: At program point L35-2(lines 35 73) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1)) (.cse1 (= main_~a~0 1)) (.cse2 (= main_~y~0 1)) (.cse3 (= main_~x~0 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (and .cse1 (= main_~p~0 0) .cse2 (= main_~r~0 1) .cse3 (<= 0 main_~c~0) (<= main_~b~0 0) (<= main_~c~0 0) (<= 0 main_~b~0) (= main_~q~0 1) (= (+ main_~s~0 1) 0)) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (and .cse1 (= main_~r~0 0) (= main_~b~0 1) .cse2 (= main_~s~0 1) .cse3 (= main_~q~0 0) (= main_~p~0 1)) (not (= 11 (select |#length| 2))))) [2023-04-02 22:57:34,169 INFO L895 garLoopResultBuilder]: At program point L35-3(lines 35 73) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (let ((.cse1 (+ main_~p~0 main_~r~0))) (and (or (< (* main_~b~0 2) (+ main_~c~0 1)) (= (+ main_~b~0 main_~p~0 main_~r~0) (+ (* main_~k~0 main_~s~0) (* main_~q~0 2) (* main_~q~0 main_~k~0) (* main_~s~0 2))) (not (= main_~b~0 (+ main_~q~0 main_~s~0))) (< main_~c~0 main_~b~0)) (= main_~y~0 1) (= main_~x~0 1) (or (= main_~b~0 0) (= main_~a~0 .cse1) (< main_~a~0 main_~b~0)) (= (+ main_~a~0 main_~q~0 main_~s~0) .cse1))) (<= |#StackHeapBarrier| 0) (not (= 11 (select |#length| 2))))) [2023-04-02 22:57:34,169 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 18 76) no Hoare annotation was computed. [2023-04-02 22:57:34,169 INFO L895 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (and (= main_~a~0 1) (= main_~r~0 0) (= main_~b~0 1) (= main_~y~0 1) (= main_~k~0 0) (= main_~s~0 1) (= main_~v~0 1) (= main_~x~0 1) (= main_~d~0 1) (= main_~q~0 0) (= main_~c~0 1) (= main_~p~0 1)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 11 (select |#length| 2))))) [2023-04-02 22:57:34,169 INFO L899 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2023-04-02 22:57:34,169 INFO L895 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (and (<= main_~y~0 2147483647) (<= 0 main_~x~0) (<= main_~x~0 1) (<= 0 (+ main_~y~0 2147483648))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 11 (select |#length| 2))))) [2023-04-02 22:57:34,169 INFO L895 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (and (<= 0 main_~y~0) (<= 0 main_~x~0) (<= main_~x~0 1) (<= main_~y~0 1)) (not (= 11 (select |#length| 2))))) [2023-04-02 22:57:34,169 INFO L899 garLoopResultBuilder]: For program point L53(lines 49 59) no Hoare annotation was computed. [2023-04-02 22:57:34,170 INFO L895 garLoopResultBuilder]: At program point L49-2(lines 49 59) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (and (= main_~a~0 1) (= main_~r~0 0) (= main_~b~0 1) (= main_~y~0 1) (= main_~k~0 0) (= main_~s~0 1) (= main_~v~0 1) (= main_~x~0 1) (= main_~d~0 1) (= main_~q~0 0) (= main_~c~0 1) (= main_~p~0 1)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 11 (select |#length| 2))))) [2023-04-02 22:57:34,170 INFO L899 garLoopResultBuilder]: For program point L49-3(lines 49 59) no Hoare annotation was computed. [2023-04-02 22:57:34,170 INFO L899 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2023-04-02 22:57:34,170 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (and (<= 0 main_~y~0) (= main_~x~0 1) (<= main_~y~0 1)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 11 (select |#length| 2))))) [2023-04-02 22:57:34,170 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (and (= main_~a~0 1) (= main_~r~0 0) (= main_~b~0 1) (= main_~y~0 1) (= main_~k~0 0) (= main_~s~0 1) (= main_~v~0 1) (= main_~x~0 1) (= main_~d~0 1) (= main_~q~0 0) (= main_~c~0 1) (= main_~p~0 1)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 11 (select |#length| 2))))) [2023-04-02 22:57:34,170 INFO L895 garLoopResultBuilder]: At program point L50-1(line 50) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (and (= main_~a~0 1) (= main_~r~0 0) (= main_~b~0 1) (= main_~y~0 1) (= main_~k~0 0) (= main_~s~0 1) (= main_~v~0 1) (= main_~x~0 1) (= main_~d~0 1) (= main_~q~0 0) (= main_~c~0 1) (= main_~p~0 1)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 11 (select |#length| 2))))) [2023-04-02 22:57:34,170 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 18 76) the Hoare annotation is: true [2023-04-02 22:57:34,170 INFO L895 garLoopResultBuilder]: At program point L42-2(lines 42 62) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1)) (.cse1 (= main_~a~0 1)) (.cse2 (= main_~r~0 0)) (.cse3 (= main_~b~0 1)) (.cse4 (= main_~y~0 1)) (.cse5 (= main_~s~0 1)) (.cse6 (= main_~x~0 1)) (.cse7 (= main_~q~0 0)) (.cse8 (= main_~p~0 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (and .cse1 .cse2 .cse3 (<= main_~v~0 1) .cse4 .cse5 .cse6 (<= 0 main_~c~0) (= main_~k~0 1) .cse7 (<= main_~c~0 0) .cse8) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (and .cse1 .cse2 .cse3 .cse4 (= main_~k~0 0) .cse5 .cse6 .cse7 (= main_~c~0 1) .cse8) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 11 (select |#length| 2))))) [2023-04-02 22:57:34,170 INFO L899 garLoopResultBuilder]: For program point L42-3(lines 42 62) no Hoare annotation was computed. [2023-04-02 22:57:34,170 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2023-04-02 22:57:34,170 INFO L895 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (and (<= main_~x~0 2147483647) (<= 0 (+ main_~x~0 2147483648))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 11 (select |#length| 2))))) [2023-04-02 22:57:34,171 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2023-04-02 22:57:34,171 INFO L895 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (and (= main_~a~0 1) (= main_~r~0 0) (= main_~b~0 1) (= main_~y~0 1) (= main_~k~0 0) (= main_~s~0 1) (= main_~v~0 1) (= main_~x~0 1) (= main_~d~0 1) (= main_~q~0 0) (= main_~c~0 1) (= main_~p~0 1)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 11 (select |#length| 2))))) [2023-04-02 22:57:34,171 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 44) no Hoare annotation was computed. [2023-04-02 22:57:34,171 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2023-04-02 22:57:34,171 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-02 22:57:34,171 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-02 22:57:34,171 INFO L895 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2023-04-02 22:57:34,171 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-02 22:57:34,171 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 22:57:34,171 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2023-04-02 22:57:34,171 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2023-04-02 22:57:34,171 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2023-04-02 22:57:34,171 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 10 16) the Hoare annotation is: true [2023-04-02 22:57:34,171 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2023-04-02 22:57:34,171 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2023-04-02 22:57:34,174 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:57:34,175 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 22:57:34,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 10:57:34 BoogieIcfgContainer [2023-04-02 22:57:34,187 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 22:57:34,187 INFO L158 Benchmark]: Toolchain (without parser) took 24237.65ms. Allocated memory was 288.4MB in the beginning and 451.9MB in the end (delta: 163.6MB). Free memory was 241.8MB in the beginning and 195.6MB in the end (delta: 46.3MB). Peak memory consumption was 252.2MB. Max. memory is 8.0GB. [2023-04-02 22:57:34,187 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 184.5MB. Free memory was 134.4MB in the beginning and 134.2MB in the end (delta: 117.0kB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 22:57:34,187 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.07ms. Allocated memory is still 288.4MB. Free memory was 241.7MB in the beginning and 230.9MB in the end (delta: 10.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-04-02 22:57:34,188 INFO L158 Benchmark]: Boogie Preprocessor took 39.11ms. Allocated memory is still 288.4MB. Free memory was 230.9MB in the beginning and 229.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-02 22:57:34,188 INFO L158 Benchmark]: RCFGBuilder took 229.34ms. Allocated memory is still 288.4MB. Free memory was 229.3MB in the beginning and 215.9MB in the end (delta: 13.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-04-02 22:57:34,188 INFO L158 Benchmark]: TraceAbstraction took 23784.64ms. Allocated memory was 288.4MB in the beginning and 451.9MB in the end (delta: 163.6MB). Free memory was 215.2MB in the beginning and 195.6MB in the end (delta: 19.6MB). Peak memory consumption was 224.9MB. Max. memory is 8.0GB. [2023-04-02 22:57:34,189 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 184.5MB. Free memory was 134.4MB in the beginning and 134.2MB in the end (delta: 117.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 181.07ms. Allocated memory is still 288.4MB. Free memory was 241.7MB in the beginning and 230.9MB in the end (delta: 10.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 39.11ms. Allocated memory is still 288.4MB. Free memory was 230.9MB in the beginning and 229.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 229.34ms. Allocated memory is still 288.4MB. Free memory was 229.3MB in the beginning and 215.9MB in the end (delta: 13.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 23784.64ms. Allocated memory was 288.4MB in the beginning and 451.9MB in the end (delta: 163.6MB). Free memory was 215.2MB in the beginning and 195.6MB in the end (delta: 19.6MB). Peak memory consumption was 224.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 23.7s, OverallIterations: 9, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 13.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 573 SdHoareTripleChecker+Valid, 5.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 550 mSDsluCounter, 895 SdHoareTripleChecker+Invalid, 5.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 632 mSDsCounter, 363 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1836 IncrementalHoareTripleChecker+Invalid, 2199 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 363 mSolverCounterUnsat, 263 mSDtfsCounter, 1836 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 800 GetRequests, 583 SyntacticMatches, 18 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2444 ImplicationChecksByTransitivity, 11.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=141occurred in iteration=7, InterpolantAutomatonStates: 108, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 105 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 100 PreInvPairs, 111 NumberOfFragments, 1333 HoareAnnotationTreeSize, 100 FomulaSimplifications, 1504 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 18 FomulaSimplificationsInter, 1442 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 405 NumberOfCodeBlocks, 377 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 544 ConstructedInterpolants, 0 QuantifiedInterpolants, 2530 SizeOfPredicates, 38 NumberOfNonLiveVariables, 1238 ConjunctsInSsa, 145 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 432/479 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 0.4s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 9, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 50, DAG_INTERPRETER_EARLY_EXITS: 3, TOOLS_POST_APPLICATIONS: 36, TOOLS_POST_TIME: 0.1s, TOOLS_POST_CALL_APPLICATIONS: 36, TOOLS_POST_CALL_TIME: 0.1s, TOOLS_POST_RETURN_APPLICATIONS: 22, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 92, TOOLS_QUANTIFIERELIM_TIME: 0.2s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 135, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 37, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 1, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 50, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 1, CALL_SUMMARIZER_APPLICATIONS: 22, CALL_SUMMARIZER_CACHE_MISSES: 5, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 564, DAG_COMPRESSION_RETAINED_NODES: 154, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: (((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || (((((((((((a == 1 && r == 0) && b == 1) && y == 1) && k == 0) && s == 1) && v == 1) && x == 1) && d == 1) && q == 0) && c == 1) && p == 1)) || !(2 == unknown-#length-unknown[1])) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(\valid[1] == 1)) || !(#NULL == 0)) || !(\valid[2] == 1)) || unknown-#StackHeapBarrier-unknown <= 0) || !(11 == unknown-#length-unknown[2]) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || ((((((((((a == 1 && p == 0) && y == 1) && r == 1) && x == 1) && 0 <= c) && b <= 0) && c <= 0) && 0 <= b) && q == 1) && s + 1 == 0)) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(\valid[1] == 1)) || !(#NULL == 0)) || !(\valid[2] == 1)) || unknown-#StackHeapBarrier-unknown <= 0) || (((((((a == 1 && r == 0) && b == 1) && y == 1) && s == 1) && x == 1) && q == 0) && p == 1)) || !(11 == unknown-#length-unknown[2]) - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: ((((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || (((((((((((a == 1 && r == 0) && b == 1) && v <= 1) && y == 1) && s == 1) && x == 1) && 0 <= c) && k == 1) && q == 0) && c <= 0) && p == 1)) || !(2 == unknown-#length-unknown[1])) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || (((((((((a == 1 && r == 0) && b == 1) && y == 1) && k == 0) && s == 1) && x == 1) && q == 0) && c == 1) && p == 1)) || !(\valid[1] == 1)) || !(#NULL == 0)) || !(\valid[2] == 1)) || unknown-#StackHeapBarrier-unknown <= 0) || !(11 == unknown-#length-unknown[2]) RESULT: Ultimate proved your program to be correct! [2023-04-02 22:57:34,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...