/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/ps6-ll_valuebound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 23:32:41,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 23:32:41,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 23:32:41,503 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 23:32:41,504 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 23:32:41,506 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 23:32:41,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 23:32:41,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 23:32:41,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 23:32:41,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 23:32:41,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 23:32:41,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 23:32:41,520 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 23:32:41,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 23:32:41,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 23:32:41,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 23:32:41,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 23:32:41,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 23:32:41,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 23:32:41,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 23:32:41,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 23:32:41,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 23:32:41,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 23:32:41,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 23:32:41,544 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 23:32:41,546 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 23:32:41,547 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 23:32:41,548 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 23:32:41,549 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 23:32:41,549 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 23:32:41,549 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 23:32:41,550 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 23:32:41,550 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 23:32:41,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 23:32:41,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 23:32:41,551 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 23:32:41,553 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 23:32:41,580 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 23:32:41,581 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 23:32:41,581 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 23:32:41,581 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 23:32:41,582 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 23:32:41,582 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 23:32:41,582 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 23:32:41,582 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 23:32:41,582 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 23:32:41,582 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 23:32:41,583 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 23:32:41,583 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 23:32:41,583 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 23:32:41,583 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 23:32:41,584 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 23:32:41,584 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 23:32:41,584 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 23:32:41,584 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 23:32:41,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 23:32:41,585 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 23:32:41,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 23:32:41,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 23:32:41,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 23:32:41,585 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 23:32:41,585 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 23:32:41,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 23:32:41,586 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 23:32:41,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 23:32:41,586 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 23:32:41,586 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 23:32:41,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 23:32:41,586 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 23:32:41,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:32:41,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 23:32:41,587 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 23:32:41,587 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 23:32:41,587 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 23:32:41,587 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 23:32:41,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 23:32:41,587 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 23:32:41,587 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 23:32:41,588 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 23:32:41,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 23:32:41,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 23:32:41,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 23:32:41,781 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 23:32:41,781 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 23:32:41,782 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound10.c [2023-04-02 23:32:42,853 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 23:32:43,038 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 23:32:43,038 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound10.c [2023-04-02 23:32:43,043 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89a08a61c/229fd85292904a68878ee1056ba6ff21/FLAGee9ae58b7 [2023-04-02 23:32:43,054 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89a08a61c/229fd85292904a68878ee1056ba6ff21 [2023-04-02 23:32:43,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 23:32:43,057 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 23:32:43,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 23:32:43,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 23:32:43,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 23:32:43,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:32:43" (1/1) ... [2023-04-02 23:32:43,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dc7b2e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:32:43, skipping insertion in model container [2023-04-02 23:32:43,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:32:43" (1/1) ... [2023-04-02 23:32:43,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 23:32:43,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 23:32:43,212 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/ps6-ll_valuebound10.c[458,471] [2023-04-02 23:32:43,236 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:32:43,247 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 23:32:43,261 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/ps6-ll_valuebound10.c[458,471] [2023-04-02 23:32:43,269 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:32:43,280 INFO L208 MainTranslator]: Completed translation [2023-04-02 23:32:43,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:32:43 WrapperNode [2023-04-02 23:32:43,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 23:32:43,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 23:32:43,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 23:32:43,281 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 23:32:43,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:32:43" (1/1) ... [2023-04-02 23:32:43,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:32:43" (1/1) ... [2023-04-02 23:32:43,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:32:43" (1/1) ... [2023-04-02 23:32:43,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:32:43" (1/1) ... [2023-04-02 23:32:43,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:32:43" (1/1) ... [2023-04-02 23:32:43,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:32:43" (1/1) ... [2023-04-02 23:32:43,314 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:32:43" (1/1) ... [2023-04-02 23:32:43,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:32:43" (1/1) ... [2023-04-02 23:32:43,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 23:32:43,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 23:32:43,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 23:32:43,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 23:32:43,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:32:43" (1/1) ... [2023-04-02 23:32:43,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:32:43,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:32:43,347 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 23:32:43,369 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 23:32:43,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 23:32:43,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 23:32:43,385 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 23:32:43,385 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 23:32:43,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 23:32:43,385 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 23:32:43,385 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 23:32:43,385 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 23:32:43,385 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 23:32:43,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 23:32:43,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2023-04-02 23:32:43,386 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 23:32:43,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 23:32:43,386 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 23:32:43,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 23:32:43,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 23:32:43,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 23:32:43,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 23:32:43,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 23:32:43,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 23:32:43,446 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 23:32:43,448 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 23:32:43,598 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 23:32:43,618 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 23:32:43,618 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 23:32:43,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:32:43 BoogieIcfgContainer [2023-04-02 23:32:43,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 23:32:43,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 23:32:43,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 23:32:43,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 23:32:43,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 11:32:43" (1/3) ... [2023-04-02 23:32:43,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@292693ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:32:43, skipping insertion in model container [2023-04-02 23:32:43,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:32:43" (2/3) ... [2023-04-02 23:32:43,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@292693ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:32:43, skipping insertion in model container [2023-04-02 23:32:43,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:32:43" (3/3) ... [2023-04-02 23:32:43,627 INFO L112 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound10.c [2023-04-02 23:32:43,641 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 23:32:43,641 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 23:32:43,677 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 23:32:43,683 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;@4387ba18, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 23:32:43,683 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 23:32:43,686 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-02 23:32:43,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-04-02 23:32:43,691 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:32:43,691 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:32:43,692 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:32:43,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:32:43,696 INFO L85 PathProgramCache]: Analyzing trace with hash 395619074, now seen corresponding path program 1 times [2023-04-02 23:32:43,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:32:43,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210381140] [2023-04-02 23:32:43,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:32:43,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:32:43,787 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:32:43,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2067050310] [2023-04-02 23:32:43,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:32:43,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:32:43,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:32:43,791 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 23:32:43,792 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 23:32:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:32:43,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2023-04-02 23:32:43,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:32:44,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 23:32:44,019 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 23:32:44,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:32:44,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210381140] [2023-04-02 23:32:44,020 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:32:44,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067050310] [2023-04-02 23:32:44,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067050310] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:32:44,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:32:44,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 23:32:44,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25032565] [2023-04-02 23:32:44,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:32:44,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 23:32:44,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:32:44,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 23:32:44,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 23:32:44,050 INFO L87 Difference]: Start difference. First operand has 25 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-02 23:32:44,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:32:44,204 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions. [2023-04-02 23:32:44,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 23:32:44,206 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 17 [2023-04-02 23:32:44,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:32:44,212 INFO L225 Difference]: With dead ends: 51 [2023-04-02 23:32:44,212 INFO L226 Difference]: Without dead ends: 28 [2023-04-02 23:32:44,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:32:44,223 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:32:44,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 72 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:32:44,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-04-02 23:32:44,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-04-02 23:32:44,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-02 23:32:44,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2023-04-02 23:32:44,255 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 17 [2023-04-02 23:32:44,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:32:44,255 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2023-04-02 23:32:44,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-02 23:32:44,256 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2023-04-02 23:32:44,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-04-02 23:32:44,257 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:32:44,257 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:32:44,269 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 23:32:44,462 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 23:32:44,463 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:32:44,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:32:44,464 INFO L85 PathProgramCache]: Analyzing trace with hash 398349892, now seen corresponding path program 1 times [2023-04-02 23:32:44,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:32:44,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116483062] [2023-04-02 23:32:44,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:32:44,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:32:44,492 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:32:44,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [522195036] [2023-04-02 23:32:44,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:32:44,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:32:44,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:32:44,501 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 23:32:44,517 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 23:32:44,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:32:44,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 19 conjunts are in the unsatisfiable core [2023-04-02 23:32:44,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:32:44,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 23:32:44,659 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:32:46,995 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 23:32:46,996 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:32:46,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116483062] [2023-04-02 23:32:46,996 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:32:46,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522195036] [2023-04-02 23:32:46,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522195036] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 23:32:46,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [542245108] [2023-04-02 23:32:47,012 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2023-04-02 23:32:47,013 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:32:47,015 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:32:47,018 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:32:47,018 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:32:47,074 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 23:32:47,583 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 65 for LOIs [2023-04-02 23:32:47,720 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 13 for LOIs [2023-04-02 23:32:47,725 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 23:32:47,730 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:32:50,609 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '352#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (exists ((v_main_~c~0_BEFORE_CALL_9 Int) (v_main_~k~0_BEFORE_CALL_13 Int) (v_main_~y~0_BEFORE_CALL_13 Int) (v_main_~x~0_BEFORE_CALL_13 Int)) (and (or (and (<= v_main_~k~0_BEFORE_CALL_13 (+ 9 v_main_~y~0_BEFORE_CALL_13)) (<= v_main_~k~0_BEFORE_CALL_13 (+ 9 |#StackHeapBarrier|)) (= v_main_~c~0_BEFORE_CALL_9 v_main_~y~0_BEFORE_CALL_13) (<= 1 |#StackHeapBarrier|) (<= (+ v_main_~y~0_BEFORE_CALL_13 v_main_~k~0_BEFORE_CALL_13) 21) (<= 1 (+ |#StackHeapBarrier| v_main_~k~0_BEFORE_CALL_13)) (<= v_main_~y~0_BEFORE_CALL_13 v_main_~k~0_BEFORE_CALL_13) (<= v_main_~y~0_BEFORE_CALL_13 11) (<= 1 v_main_~y~0_BEFORE_CALL_13) (<= 0 v_main_~k~0_BEFORE_CALL_13) (<= v_main_~k~0_BEFORE_CALL_13 10) (<= 2 (+ v_main_~y~0_BEFORE_CALL_13 |#StackHeapBarrier|)) (= |#NULL.offset| 0) (<= v_main_~y~0_BEFORE_CALL_13 (+ |#StackHeapBarrier| 10)) (<= 1 (+ v_main_~y~0_BEFORE_CALL_13 v_main_~k~0_BEFORE_CALL_13)) (= |#NULL.base| 0)) (and (<= 1 |#StackHeapBarrier|) (= v_main_~y~0_BEFORE_CALL_13 0) (= v_main_~c~0_BEFORE_CALL_9 0) (= v_main_~x~0_BEFORE_CALL_13 0) (<= 0 v_main_~k~0_BEFORE_CALL_13) (<= v_main_~k~0_BEFORE_CALL_13 10) (= |#NULL.offset| 0) (= |#NULL.base| 0))) (not (= (+ (* 6 (* v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13)) (* 2 (* v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13)) (* 5 (* v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13))) (+ (* v_main_~x~0_BEFORE_CALL_13 12) (* v_main_~y~0_BEFORE_CALL_13 v_main_~y~0_BEFORE_CALL_13)))))))' at error location [2023-04-02 23:32:50,609 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:32:50,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 23:32:50,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2023-04-02 23:32:50,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394575307] [2023-04-02 23:32:50,610 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 23:32:50,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 23:32:50,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:32:50,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 23:32:50,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=424, Unknown=2, NotChecked=0, Total=506 [2023-04-02 23:32:50,612 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-04-02 23:32:50,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:32:50,768 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2023-04-02 23:32:50,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 23:32:50,769 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 24 [2023-04-02 23:32:50,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:32:50,770 INFO L225 Difference]: With dead ends: 39 [2023-04-02 23:32:50,770 INFO L226 Difference]: Without dead ends: 35 [2023-04-02 23:32:50,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=97, Invalid=501, Unknown=2, NotChecked=0, Total=600 [2023-04-02 23:32:50,772 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 16 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:32:50,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 90 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:32:50,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-04-02 23:32:50,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2023-04-02 23:32:50,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-02 23:32:50,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2023-04-02 23:32:50,788 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 24 [2023-04-02 23:32:50,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:32:50,789 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2023-04-02 23:32:50,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-04-02 23:32:50,789 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2023-04-02 23:32:50,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-04-02 23:32:50,790 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:32:50,790 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:32:50,799 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 23:32:50,996 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 23:32:50,996 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:32:50,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:32:50,997 INFO L85 PathProgramCache]: Analyzing trace with hash 2024645172, now seen corresponding path program 1 times [2023-04-02 23:32:50,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:32:50,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44869157] [2023-04-02 23:32:50,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:32:50,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:32:51,021 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:32:51,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1897564714] [2023-04-02 23:32:51,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:32:51,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:32:51,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:32:51,026 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 23:32:51,029 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 23:32:51,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:32:51,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 24 conjunts are in the unsatisfiable core [2023-04-02 23:32:51,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:32:51,254 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-02 23:32:51,254 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:32:51,576 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:32:51,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44869157] [2023-04-02 23:32:51,576 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:32:51,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897564714] [2023-04-02 23:32:51,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897564714] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:32:51,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1757044095] [2023-04-02 23:32:51,579 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-02 23:32:51,579 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:32:51,580 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:32:51,580 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:32:51,580 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:32:51,601 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 23:32:51,908 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 23:32:51,911 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 13 for LOIs [2023-04-02 23:32:51,914 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 23:32:51,918 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:32:52,331 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '645#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 23:32:52,331 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:32:52,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:32:52,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-04-02 23:32:52,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491341613] [2023-04-02 23:32:52,332 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 23:32:52,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 23:32:52,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:32:52,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 23:32:52,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2023-04-02 23:32:52,334 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 10 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-02 23:32:52,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:32:52,483 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2023-04-02 23:32:52,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 23:32:52,484 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 35 [2023-04-02 23:32:52,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:32:52,485 INFO L225 Difference]: With dead ends: 43 [2023-04-02 23:32:52,485 INFO L226 Difference]: Without dead ends: 37 [2023-04-02 23:32:52,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2023-04-02 23:32:52,486 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:32:52,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 93 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:32:52,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-04-02 23:32:52,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-04-02 23:32:52,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 9 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-02 23:32:52,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2023-04-02 23:32:52,495 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 35 [2023-04-02 23:32:52,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:32:52,496 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2023-04-02 23:32:52,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-02 23:32:52,496 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2023-04-02 23:32:52,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-04-02 23:32:52,497 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:32:52,497 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:32:52,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-02 23:32:52,698 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 23:32:52,698 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:32:52,698 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:32:52,699 INFO L85 PathProgramCache]: Analyzing trace with hash -170934026, now seen corresponding path program 2 times [2023-04-02 23:32:52,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:32:52,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928274404] [2023-04-02 23:32:52,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:32:52,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:32:52,713 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:32:52,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [180663417] [2023-04-02 23:32:52,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 23:32:52,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:32:52,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:32:52,725 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 23:32:52,729 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 23:32:52,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-04-02 23:32:52,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 23:32:52,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 24 conjunts are in the unsatisfiable core [2023-04-02 23:32:52,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:32:52,946 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-04-02 23:32:52,946 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:32:53,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:32:53,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928274404] [2023-04-02 23:32:53,059 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:32:53,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180663417] [2023-04-02 23:32:53,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180663417] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:32:53,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1793489227] [2023-04-02 23:32:53,061 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-02 23:32:53,061 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:32:53,061 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:32:53,061 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:32:53,062 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:32:53,077 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 23:32:53,412 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 23:32:53,415 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 13 for LOIs [2023-04-02 23:32:53,417 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 23:32:53,420 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:32:54,024 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '972#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 23:32:54,024 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:32:54,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:32:54,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-04-02 23:32:54,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195781859] [2023-04-02 23:32:54,025 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 23:32:54,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 23:32:54,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:32:54,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 23:32:54,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2023-04-02 23:32:54,026 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-04-02 23:32:54,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:32:54,211 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2023-04-02 23:32:54,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 23:32:54,212 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 42 [2023-04-02 23:32:54,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:32:54,213 INFO L225 Difference]: With dead ends: 46 [2023-04-02 23:32:54,213 INFO L226 Difference]: Without dead ends: 40 [2023-04-02 23:32:54,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 75 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=98, Invalid=604, Unknown=0, NotChecked=0, Total=702 [2023-04-02 23:32:54,214 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:32:54,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 118 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:32:54,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-04-02 23:32:54,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-04-02 23:32:54,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-02 23:32:54,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2023-04-02 23:32:54,223 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 42 [2023-04-02 23:32:54,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:32:54,224 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2023-04-02 23:32:54,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-04-02 23:32:54,224 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2023-04-02 23:32:54,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-04-02 23:32:54,225 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:32:54,225 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:32:54,232 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 23:32:54,425 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 23:32:54,426 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:32:54,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:32:54,426 INFO L85 PathProgramCache]: Analyzing trace with hash -363600908, now seen corresponding path program 3 times [2023-04-02 23:32:54,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:32:54,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510012603] [2023-04-02 23:32:54,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:32:54,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:32:54,437 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:32:54,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [372806082] [2023-04-02 23:32:54,438 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 23:32:54,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:32:54,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:32:54,439 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 23:32:54,447 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 23:32:54,492 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 23:32:54,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 23:32:54,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 28 conjunts are in the unsatisfiable core [2023-04-02 23:32:54,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:32:54,688 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 10 proven. 19 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-04-02 23:32:54,689 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:32:54,937 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-04-02 23:32:54,937 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:32:54,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510012603] [2023-04-02 23:32:54,937 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:32:54,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372806082] [2023-04-02 23:32:54,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372806082] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 23:32:54,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [381203811] [2023-04-02 23:32:54,940 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-02 23:32:54,940 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:32:54,940 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:32:54,940 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:32:54,940 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:32:54,956 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 23:32:55,316 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 23:32:55,319 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 13 for LOIs [2023-04-02 23:32:55,321 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 23:32:55,324 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:32:55,887 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1428#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 23:32:55,887 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:32:55,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 23:32:55,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2023-04-02 23:32:55,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513280018] [2023-04-02 23:32:55,888 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 23:32:55,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 23:32:55,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:32:55,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 23:32:55,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=753, Unknown=0, NotChecked=0, Total=870 [2023-04-02 23:32:55,889 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 18 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 12 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2023-04-02 23:32:56,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:32:56,481 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2023-04-02 23:32:56,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 23:32:56,482 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 12 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) Word has length 49 [2023-04-02 23:32:56,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:32:56,483 INFO L225 Difference]: With dead ends: 61 [2023-04-02 23:32:56,483 INFO L226 Difference]: Without dead ends: 53 [2023-04-02 23:32:56,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 115 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=235, Invalid=1325, Unknown=0, NotChecked=0, Total=1560 [2023-04-02 23:32:56,485 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 22 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 23:32:56,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 182 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 23:32:56,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-04-02 23:32:56,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2023-04-02 23:32:56,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 32 states have (on average 1.03125) internal successors, (33), 32 states have internal predecessors, (33), 14 states have call successors, (14), 7 states have call predecessors, (14), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-04-02 23:32:56,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2023-04-02 23:32:56,500 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 49 [2023-04-02 23:32:56,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:32:56,501 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2023-04-02 23:32:56,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 12 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2023-04-02 23:32:56,501 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2023-04-02 23:32:56,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-04-02 23:32:56,502 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:32:56,502 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 8, 8, 8, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:32:56,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-04-02 23:32:56,710 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 23:32:56,710 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:32:56,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:32:56,710 INFO L85 PathProgramCache]: Analyzing trace with hash -40224908, now seen corresponding path program 4 times [2023-04-02 23:32:56,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:32:56,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117291581] [2023-04-02 23:32:56,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:32:56,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:32:56,721 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:32:56,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2069185829] [2023-04-02 23:32:56,722 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-04-02 23:32:56,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:32:56,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:32:56,728 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 23:32:56,729 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 23:32:57,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:32:57,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 55 conjunts are in the unsatisfiable core [2023-04-02 23:32:57,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:32:57,435 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 41 proven. 85 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2023-04-02 23:32:57,435 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:33:21,514 WARN L223 SmtUtils]: Spent 7.17s on a formula simplification that was a NOOP. DAG size: 47 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-02 23:33:23,560 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:33:23,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117291581] [2023-04-02 23:33:23,560 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:33:23,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069185829] [2023-04-02 23:33:23,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069185829] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:33:23,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [551380359] [2023-04-02 23:33:23,562 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-02 23:33:23,562 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:33:23,563 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:33:23,563 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:33:23,563 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:33:23,577 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 23:33:23,856 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 23:33:23,860 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 13 for LOIs [2023-04-02 23:33:23,863 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 23:33:23,866 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:33:24,462 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1941#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 23:33:24,462 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:33:24,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:33:24,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2023-04-02 23:33:24,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539733429] [2023-04-02 23:33:24,463 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 23:33:24,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 23:33:24,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:33:24,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 23:33:24,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=939, Unknown=6, NotChecked=0, Total=1056 [2023-04-02 23:33:24,464 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand has 16 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 11 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2023-04-02 23:33:24,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:33:24,850 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2023-04-02 23:33:24,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 23:33:24,851 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 11 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) Word has length 77 [2023-04-02 23:33:24,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:33:24,852 INFO L225 Difference]: With dead ends: 65 [2023-04-02 23:33:24,852 INFO L226 Difference]: Without dead ends: 59 [2023-04-02 23:33:24,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 137 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 22.7s TimeCoverageRelationStatistics Valid=128, Invalid=1056, Unknown=6, NotChecked=0, Total=1190 [2023-04-02 23:33:24,853 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 13 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 23:33:24,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 240 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 23:33:24,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-04-02 23:33:24,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-04-02 23:33:24,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 37 states have (on average 1.027027027027027) internal successors, (38), 37 states have internal predecessors, (38), 15 states have call successors, (15), 8 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-04-02 23:33:24,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2023-04-02 23:33:24,870 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 77 [2023-04-02 23:33:24,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:33:24,870 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2023-04-02 23:33:24,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 11 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2023-04-02 23:33:24,871 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2023-04-02 23:33:24,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-02 23:33:24,872 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:33:24,872 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 9, 9, 9, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:33:24,882 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 23:33:25,079 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 23:33:25,080 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:33:25,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:33:25,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1456260022, now seen corresponding path program 5 times [2023-04-02 23:33:25,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:33:25,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537436611] [2023-04-02 23:33:25,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:33:25,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:33:25,103 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:33:25,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1544567423] [2023-04-02 23:33:25,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 23:33:25,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:33:25,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:33:25,107 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 23:33:25,110 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 23:33:29,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-04-02 23:33:29,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 23:33:29,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 49 conjunts are in the unsatisfiable core [2023-04-02 23:33:29,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:33:29,965 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 25 proven. 130 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2023-04-02 23:33:29,965 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:33:34,347 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~y~0 c_main_~y~0))) (or (< (+ 6 c_main_~c~0) c_main_~k~0) (= (+ (* 12 c_main_~y~0) 36 .cse0) (+ (* c_main_~y~0 c_main_~k~0) (* 6 c_main_~k~0))) (not (= (mod (+ (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 7 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) .cse0) 12) 0)) (<= c_main_~k~0 (+ 5 c_main_~c~0)))) is different from false [2023-04-02 23:33:50,397 WARN L861 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((v_main_~y~0_BEFORE_CALL_120 Int) (v_main_~k~0_BEFORE_CALL_137 Int)) (let ((.cse0 (* v_main_~y~0_BEFORE_CALL_120 v_main_~y~0_BEFORE_CALL_120))) (or (= (+ (* v_main_~k~0_BEFORE_CALL_137 v_main_~y~0_BEFORE_CALL_120) (* v_main_~k~0_BEFORE_CALL_137 6)) (+ (* v_main_~y~0_BEFORE_CALL_120 12) .cse0 36)) (= (mod (+ .cse0 (* v_main_~y~0_BEFORE_CALL_120 v_main_~y~0_BEFORE_CALL_120 v_main_~y~0_BEFORE_CALL_120 v_main_~y~0_BEFORE_CALL_120 v_main_~y~0_BEFORE_CALL_120 6) (* v_main_~y~0_BEFORE_CALL_120 v_main_~y~0_BEFORE_CALL_120 v_main_~y~0_BEFORE_CALL_120 v_main_~y~0_BEFORE_CALL_120 v_main_~y~0_BEFORE_CALL_120 v_main_~y~0_BEFORE_CALL_120 10) (* 7 v_main_~y~0_BEFORE_CALL_120 v_main_~y~0_BEFORE_CALL_120 v_main_~y~0_BEFORE_CALL_120 v_main_~y~0_BEFORE_CALL_120)) 12) 0))))) is different from true [2023-04-02 23:34:08,437 WARN L861 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((v_main_~y~0_BEFORE_CALL_120 Int) (v_main_~k~0_BEFORE_CALL_137 Int)) (let ((.cse0 (* v_main_~y~0_BEFORE_CALL_120 v_main_~y~0_BEFORE_CALL_120))) (or (= (+ (* v_main_~k~0_BEFORE_CALL_137 v_main_~y~0_BEFORE_CALL_120) (* v_main_~k~0_BEFORE_CALL_137 6)) (+ (* v_main_~y~0_BEFORE_CALL_120 12) .cse0 36)) (= (mod (+ .cse0 (* v_main_~y~0_BEFORE_CALL_120 v_main_~y~0_BEFORE_CALL_120 v_main_~y~0_BEFORE_CALL_120 v_main_~y~0_BEFORE_CALL_120 v_main_~y~0_BEFORE_CALL_120 6) (* v_main_~y~0_BEFORE_CALL_120 v_main_~y~0_BEFORE_CALL_120 v_main_~y~0_BEFORE_CALL_120 v_main_~y~0_BEFORE_CALL_120 v_main_~y~0_BEFORE_CALL_120 v_main_~y~0_BEFORE_CALL_120 10) (* 7 v_main_~y~0_BEFORE_CALL_120 v_main_~y~0_BEFORE_CALL_120 v_main_~y~0_BEFORE_CALL_120 v_main_~y~0_BEFORE_CALL_120)) 12) 0)))) (= c___VERIFIER_assert_~cond 0)) is different from true [2023-04-02 23:34:39,781 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~y~0 c_main_~y~0))) (or (not (= (mod (+ (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 7 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) .cse0) 12) 0)) (forall ((main_~k~0 Int)) (or (= (+ (* 16 c_main_~y~0) 64 .cse0) (+ (* main_~k~0 c_main_~y~0) (* main_~k~0 8))) (< (+ c_main_~c~0 8) main_~k~0) (<= main_~k~0 (+ 7 c_main_~c~0)))))) is different from false [2023-04-02 23:34:41,807 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:34:41,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537436611] [2023-04-02 23:34:41,808 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:34:41,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544567423] [2023-04-02 23:34:41,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544567423] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:34:41,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1649856216] [2023-04-02 23:34:41,810 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-02 23:34:41,810 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:34:41,810 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:34:41,810 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:34:41,811 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:34:41,825 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 23:34:42,143 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 23:34:42,146 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 13 for LOIs [2023-04-02 23:34:42,148 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 23:34:42,151 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:34:42,810 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2628#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 23:34:42,810 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:34:42,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:34:42,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2023-04-02 23:34:42,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521241064] [2023-04-02 23:34:42,811 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 23:34:42,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 23:34:42,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:34:42,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 23:34:42,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1154, Unknown=5, NotChecked=292, Total=1640 [2023-04-02 23:34:42,813 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 11 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13) [2023-04-02 23:34:43,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:34:43,209 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2023-04-02 23:34:43,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 23:34:43,210 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 11 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13) Word has length 84 [2023-04-02 23:34:43,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:34:43,211 INFO L225 Difference]: With dead ends: 68 [2023-04-02 23:34:43,211 INFO L226 Difference]: Without dead ends: 62 [2023-04-02 23:34:43,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 192 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 28.3s TimeCoverageRelationStatistics Valid=203, Invalid=1290, Unknown=5, NotChecked=308, Total=1806 [2023-04-02 23:34:43,212 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 6 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 23:34:43,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 272 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 23:34:43,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-04-02 23:34:43,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-04-02 23:34:43,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 39 states have internal predecessors, (40), 16 states have call successors, (16), 8 states have call predecessors, (16), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-04-02 23:34:43,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2023-04-02 23:34:43,235 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 84 [2023-04-02 23:34:43,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:34:43,236 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2023-04-02 23:34:43,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 11 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13) [2023-04-02 23:34:43,236 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2023-04-02 23:34:43,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-02 23:34:43,237 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:34:43,237 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 10, 10, 10, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:34:43,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-02 23:34:43,447 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 23:34:43,448 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:34:43,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:34:43,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1913501388, now seen corresponding path program 6 times [2023-04-02 23:34:43,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:34:43,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182355353] [2023-04-02 23:34:43,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:34:43,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:34:43,458 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:34:43,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [429076495] [2023-04-02 23:34:43,458 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 23:34:43,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:34:43,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:34:43,459 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 23:34:43,462 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 23:34:43,516 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 23:34:43,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 23:34:43,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 52 conjunts are in the unsatisfiable core [2023-04-02 23:34:43,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:34:43,910 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 22 proven. 136 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2023-04-02 23:34:43,911 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:34:44,457 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 22 proven. 135 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2023-04-02 23:34:44,458 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:34:44,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182355353] [2023-04-02 23:34:44,458 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:34:44,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429076495] [2023-04-02 23:34:44,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429076495] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 23:34:44,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [195213717] [2023-04-02 23:34:44,459 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-02 23:34:44,460 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:34:44,460 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:34:44,460 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:34:44,460 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:34:44,476 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 23:34:44,705 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 23:34:44,708 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 13 for LOIs [2023-04-02 23:34:44,710 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 23:34:44,713 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:34:45,370 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3418#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 23:34:45,370 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:34:45,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 23:34:45,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 30 [2023-04-02 23:34:45,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374642309] [2023-04-02 23:34:45,371 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 23:34:45,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-04-02 23:34:45,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:34:45,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-04-02 23:34:45,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1485, Unknown=0, NotChecked=0, Total=1722 [2023-04-02 23:34:45,373 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. Second operand has 30 states, 27 states have (on average 2.0) internal successors, (54), 27 states have internal predecessors, (54), 24 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 24 states have call predecessors, (27), 24 states have call successors, (27) [2023-04-02 23:34:47,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:34:47,701 INFO L93 Difference]: Finished difference Result 101 states and 130 transitions. [2023-04-02 23:34:47,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-04-02 23:34:47,702 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 2.0) internal successors, (54), 27 states have internal predecessors, (54), 24 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 24 states have call predecessors, (27), 24 states have call successors, (27) Word has length 91 [2023-04-02 23:34:47,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:34:47,703 INFO L225 Difference]: With dead ends: 101 [2023-04-02 23:34:47,703 INFO L226 Difference]: Without dead ends: 93 [2023-04-02 23:34:47,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 229 SyntacticMatches, 3 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 980 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=685, Invalid=3347, Unknown=0, NotChecked=0, Total=4032 [2023-04-02 23:34:47,705 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 79 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 23:34:47,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 381 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 23:34:47,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-04-02 23:34:47,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2023-04-02 23:34:47,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 59 states have (on average 1.0169491525423728) internal successors, (60), 59 states have internal predecessors, (60), 26 states have call successors, (26), 8 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-04-02 23:34:47,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 110 transitions. [2023-04-02 23:34:47,735 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 110 transitions. Word has length 91 [2023-04-02 23:34:47,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:34:47,735 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 110 transitions. [2023-04-02 23:34:47,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 2.0) internal successors, (54), 27 states have internal predecessors, (54), 24 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 24 states have call predecessors, (27), 24 states have call successors, (27) [2023-04-02 23:34:47,736 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 110 transitions. [2023-04-02 23:34:47,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-04-02 23:34:47,738 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:34:47,738 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 20, 20, 20, 19, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:34:47,743 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 23:34:47,941 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 23:34:47,942 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:34:47,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:34:47,942 INFO L85 PathProgramCache]: Analyzing trace with hash 253473268, now seen corresponding path program 7 times [2023-04-02 23:34:47,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:34:47,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414074334] [2023-04-02 23:34:47,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:34:47,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:34:47,964 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:34:47,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1155834245] [2023-04-02 23:34:47,964 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-04-02 23:34:47,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:34:47,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:34:47,973 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 23:34:47,992 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 23:34:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:34:48,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 25 conjunts are in the unsatisfiable core [2023-04-02 23:34:48,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:34:48,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 760 proven. 1 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2023-04-02 23:34:48,626 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:34:49,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 612 proven. 1 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2023-04-02 23:34:49,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:34:49,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414074334] [2023-04-02 23:34:49,093 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:34:49,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155834245] [2023-04-02 23:34:49,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155834245] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 23:34:49,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [584802112] [2023-04-02 23:34:49,094 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-02 23:34:49,094 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:34:49,095 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:34:49,095 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:34:49,095 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:34:49,111 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 23:34:49,422 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 23:34:49,425 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 13 for LOIs [2023-04-02 23:34:49,426 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 23:34:49,428 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:34:50,185 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4787#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 23:34:50,185 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:34:50,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 23:34:50,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 43 [2023-04-02 23:34:50,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280984818] [2023-04-02 23:34:50,185 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 23:34:50,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-04-02 23:34:50,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:34:50,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-04-02 23:34:50,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=2109, Unknown=0, NotChecked=0, Total=2970 [2023-04-02 23:34:50,188 INFO L87 Difference]: Start difference. First operand 92 states and 110 transitions. Second operand has 43 states, 42 states have (on average 2.1904761904761907) internal successors, (92), 41 states have internal predecessors, (92), 42 states have call successors, (48), 2 states have call predecessors, (48), 3 states have return successors, (47), 42 states have call predecessors, (47), 42 states have call successors, (47) [2023-04-02 23:34:50,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:34:50,340 INFO L93 Difference]: Finished difference Result 97 states and 114 transitions. [2023-04-02 23:34:50,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 23:34:50,341 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 2.1904761904761907) internal successors, (92), 41 states have internal predecessors, (92), 42 states have call successors, (48), 2 states have call predecessors, (48), 3 states have return successors, (47), 42 states have call predecessors, (47), 42 states have call successors, (47) Word has length 161 [2023-04-02 23:34:50,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:34:50,341 INFO L225 Difference]: With dead ends: 97 [2023-04-02 23:34:50,341 INFO L226 Difference]: Without dead ends: 0 [2023-04-02 23:34:50,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 426 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1376 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=861, Invalid=2109, Unknown=0, NotChecked=0, Total=2970 [2023-04-02 23:34:50,343 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:34:50,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 221 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:34:50,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-02 23:34:50,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-02 23:34:50,344 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 23:34:50,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-02 23:34:50,344 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 161 [2023-04-02 23:34:50,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:34:50,345 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-02 23:34:50,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 2.1904761904761907) internal successors, (92), 41 states have internal predecessors, (92), 42 states have call successors, (48), 2 states have call predecessors, (48), 3 states have return successors, (47), 42 states have call predecessors, (47), 42 states have call successors, (47) [2023-04-02 23:34:50,345 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-02 23:34:50,345 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-02 23:34:50,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 23:34:50,357 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 23:34:50,548 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 23:34:50,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-02 23:34:52,241 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2023-04-02 23:34:52,242 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 3) no Hoare annotation was computed. [2023-04-02 23:34:52,242 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 6 8) the Hoare annotation is: true [2023-04-02 23:34:52,242 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2023-04-02 23:34:52,242 INFO L895 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (let ((.cse1 (< 2 main_~k~0)) (.cse2 (< 8 main_~k~0)) (.cse0 (<= main_~k~0 10)) (.cse3 (<= 0 main_~k~0))) (or (and .cse0 (or (= main_~k~0 4) (< 4 main_~k~0)) (= main_~y~0 4) (= main_~c~0 4) (= 1300 main_~x~0)) (and (= main_~x~0 33) (= main_~y~0 2) .cse0 (or (= main_~k~0 2) .cse1) (= main_~c~0 2)) (and (= 120825 main_~x~0) (<= 9 main_~c~0) .cse0 (= main_~y~0 9) .cse2 (<= main_~c~0 9)) (and .cse0 (= 276 main_~x~0) (= main_~y~0 3) .cse1 (= main_~c~0 3)) (and (= 7 main_~y~0) .cse0 (= 7 main_~c~0) (= main_~x~0 29008) (or (< 7 main_~k~0) (= 7 main_~k~0))) (and .cse0 (or (= 5 main_~k~0) (< 5 main_~k~0)) (= 4425 main_~x~0) (= 5 main_~c~0) (= 5 main_~y~0)) (and (or (= main_~k~0 8) .cse2) .cse0 (= main_~y~0 8) (= main_~c~0 8) (= main_~x~0 61776)) (and (= main_~y~0 6) .cse0 (= main_~x~0 12201) (= main_~c~0 6) (or (= main_~k~0 6) (< 6 main_~k~0))) (and .cse0 (= main_~y~0 1) (= main_~x~0 1) (< 0 main_~k~0) (= main_~c~0 1)) (let ((.cse4 (* main_~y~0 main_~y~0))) (and (<= 10 main_~c~0) .cse0 .cse3 (= .cse4 (* main_~k~0 main_~y~0)) (= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) .cse4)))) (and (= main_~x~0 0) .cse0 .cse3 (= main_~c~0 0) (= main_~y~0 0)))) [2023-04-02 23:34:52,242 INFO L899 garLoopResultBuilder]: For program point L29-1(lines 28 37) no Hoare annotation was computed. [2023-04-02 23:34:52,242 INFO L895 garLoopResultBuilder]: At program point L28-2(lines 28 37) the Hoare annotation is: (let ((.cse1 (< 2 main_~k~0)) (.cse2 (< 8 main_~k~0)) (.cse0 (<= main_~k~0 10)) (.cse3 (<= 0 main_~k~0))) (or (and .cse0 (or (= main_~k~0 4) (< 4 main_~k~0)) (= main_~y~0 4) (= main_~c~0 4) (= 1300 main_~x~0)) (and (= main_~x~0 33) (= main_~y~0 2) .cse0 (or (= main_~k~0 2) .cse1) (= main_~c~0 2)) (and (= 120825 main_~x~0) (<= 9 main_~c~0) .cse0 (= main_~y~0 9) .cse2 (<= main_~c~0 9)) (and .cse0 (= 276 main_~x~0) (= main_~y~0 3) .cse1 (= main_~c~0 3)) (and (= 7 main_~y~0) .cse0 (= 7 main_~c~0) (= main_~x~0 29008) (or (< 7 main_~k~0) (= 7 main_~k~0))) (and .cse0 (or (= 5 main_~k~0) (< 5 main_~k~0)) (= 4425 main_~x~0) (= 5 main_~c~0) (= 5 main_~y~0)) (and (or (= main_~k~0 8) .cse2) .cse0 (= main_~y~0 8) (= main_~c~0 8) (= main_~x~0 61776)) (and (= main_~y~0 6) .cse0 (= main_~x~0 12201) (= main_~c~0 6) (or (= main_~k~0 6) (< 6 main_~k~0))) (and .cse0 (= main_~y~0 1) (= main_~x~0 1) (< 0 main_~k~0) (= main_~c~0 1)) (let ((.cse4 (* main_~y~0 main_~y~0))) (and (<= 10 main_~c~0) .cse0 .cse3 (= .cse4 (* main_~k~0 main_~y~0)) (= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) .cse4)))) (and (= main_~x~0 0) .cse0 .cse3 (= main_~c~0 0) (= main_~y~0 0)))) [2023-04-02 23:34:52,243 INFO L895 garLoopResultBuilder]: At program point L28-3(lines 28 37) the Hoare annotation is: (or (and (= main_~x~0 0) (= main_~y~0 0)) (and (= main_~x~0 33) (= main_~y~0 2) (< 1 main_~k~0) (<= main_~k~0 2)) (let ((.cse0 (+ main_~c~0 1)) (.cse1 (+ main_~c~0 2)) (.cse2 (* main_~y~0 main_~y~0))) (and (or (<= main_~k~0 main_~c~0) (< .cse0 main_~k~0)) (or (<= main_~k~0 .cse0) (< .cse1 main_~k~0)) (<= main_~k~0 10) (<= 0 main_~k~0) (= .cse2 (* main_~k~0 main_~y~0)) (or (< (+ main_~c~0 3) main_~k~0) (<= main_~k~0 .cse1)) (= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) .cse2)))) (and (<= main_~k~0 1) (= main_~y~0 1) (= main_~x~0 1) (< 0 main_~k~0))) [2023-04-02 23:34:52,243 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 17 42) no Hoare annotation was computed. [2023-04-02 23:34:52,243 INFO L899 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2023-04-02 23:34:52,243 INFO L902 garLoopResultBuilder]: At program point L21(line 21) the Hoare annotation is: true [2023-04-02 23:34:52,243 INFO L895 garLoopResultBuilder]: At program point L21-1(line 21) the Hoare annotation is: (and (<= main_~k~0 10) (<= 0 main_~k~0)) [2023-04-02 23:34:52,243 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 17 42) the Hoare annotation is: true [2023-04-02 23:34:52,243 INFO L899 garLoopResultBuilder]: For program point L40(line 40) no Hoare annotation was computed. [2023-04-02 23:34:52,243 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (or (and (= main_~x~0 0) (= main_~y~0 0)) (and (= main_~x~0 33) (= main_~y~0 2) (< 1 main_~k~0) (<= main_~k~0 2)) (let ((.cse0 (+ main_~c~0 1)) (.cse1 (+ main_~c~0 2)) (.cse2 (* main_~y~0 main_~y~0))) (and (or (<= main_~k~0 main_~c~0) (< .cse0 main_~k~0)) (or (<= main_~k~0 .cse0) (< .cse1 main_~k~0)) (<= main_~k~0 10) (<= 0 main_~k~0) (= .cse2 (* main_~k~0 main_~y~0)) (or (< (+ main_~c~0 3) main_~k~0) (<= main_~k~0 .cse1)) (= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) .cse2)))) (and (<= main_~k~0 1) (= main_~y~0 1) (= main_~x~0 1) (< 0 main_~k~0))) [2023-04-02 23:34:52,243 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 23:34:52,243 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-02 23:34:52,243 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-02 23:34:52,243 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-04-02 23:34:52,244 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-02 23:34:52,244 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 23:34:52,244 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2023-04-02 23:34:52,244 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2023-04-02 23:34:52,244 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2023-04-02 23:34:52,244 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 9 15) the Hoare annotation is: true [2023-04-02 23:34:52,244 INFO L899 garLoopResultBuilder]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2023-04-02 23:34:52,244 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2023-04-02 23:34:52,246 INFO L445 BasicCegarLoop]: Path program histogram: [7, 1, 1] [2023-04-02 23:34:52,247 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 23:34:52,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 11:34:52 BoogieIcfgContainer [2023-04-02 23:34:52,267 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 23:34:52,267 INFO L158 Benchmark]: Toolchain (without parser) took 129210.20ms. Allocated memory is still 246.4MB. Free memory was 209.5MB in the beginning and 187.0MB in the end (delta: 22.5MB). Peak memory consumption was 147.8MB. Max. memory is 8.0GB. [2023-04-02 23:34:52,267 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 192.9MB. Free memory was 138.6MB in the beginning and 138.5MB in the end (delta: 159.5kB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 23:34:52,267 INFO L158 Benchmark]: CACSL2BoogieTranslator took 222.49ms. Allocated memory is still 246.4MB. Free memory was 209.5MB in the beginning and 199.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-02 23:34:52,268 INFO L158 Benchmark]: Boogie Preprocessor took 38.80ms. Allocated memory is still 246.4MB. Free memory was 199.0MB in the beginning and 197.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-02 23:34:52,268 INFO L158 Benchmark]: RCFGBuilder took 300.28ms. Allocated memory is still 246.4MB. Free memory was 197.4MB in the beginning and 185.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-04-02 23:34:52,268 INFO L158 Benchmark]: TraceAbstraction took 128644.40ms. Allocated memory is still 246.4MB. Free memory was 184.3MB in the beginning and 187.0MB in the end (delta: -2.7MB). Peak memory consumption was 122.7MB. Max. memory is 8.0GB. [2023-04-02 23:34:52,269 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 192.9MB. Free memory was 138.6MB in the beginning and 138.5MB in the end (delta: 159.5kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 222.49ms. Allocated memory is still 246.4MB. Free memory was 209.5MB in the beginning and 199.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.80ms. Allocated memory is still 246.4MB. Free memory was 199.0MB in the beginning and 197.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 300.28ms. Allocated memory is still 246.4MB. Free memory was 197.4MB in the beginning and 185.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 128644.40ms. Allocated memory is still 246.4MB. Free memory was 184.3MB in the beginning and 187.0MB in the end (delta: -2.7MB). Peak memory consumption was 122.7MB. 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: 12]: 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, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 128.6s, OverallIterations: 9, TraceHistogramMax: 22, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 169 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 161 mSDsluCounter, 1669 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1421 mSDsCounter, 152 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2478 IncrementalHoareTripleChecker+Invalid, 2630 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 152 mSolverCounterUnsat, 248 mSDtfsCounter, 2478 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1627 GetRequests, 1293 SyntacticMatches, 28 SemanticMatches, 306 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 3635 ImplicationChecksByTransitivity, 62.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=8, InterpolantAutomatonStates: 126, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 7 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 55 PreInvPairs, 95 NumberOfFragments, 714 HoareAnnotationTreeSize, 55 FomulaSimplifications, 1990 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 12 FomulaSimplificationsInter, 2048 FormulaSimplificationTreeSizeReductionInter, 1.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 5.2s SatisfiabilityAnalysisTime, 104.3s InterpolantComputationTime, 580 NumberOfCodeBlocks, 558 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 892 ConstructedInterpolants, 0 QuantifiedInterpolants, 4122 SizeOfPredicates, 28 NumberOfNonLiveVariables, 1523 ConjunctsInSsa, 291 ConjunctsInUnsatCore, 13 InterpolantComputations, 1 PerfectInterpolantSequences, 3892/4444 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: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (((((((((((((k <= 10 && (k == 4 || 4 < k)) && y == 4) && c == 4) && 1300 == x) || ((((x == 33 && y == 2) && k <= 10) && (k == 2 || 2 < k)) && c == 2)) || (((((120825 == x && 9 <= c) && k <= 10) && y == 9) && 8 < k) && c <= 9)) || ((((k <= 10 && 276 == x) && y == 3) && 2 < k) && c == 3)) || ((((7 == y && k <= 10) && 7 == c) && x == 29008) && (7 < k || 7 == k))) || ((((k <= 10 && (5 == k || 5 < k)) && 4425 == x) && 5 == c) && 5 == y)) || (((((k == 8 || 8 < k) && k <= 10) && y == 8) && c == 8) && x == 61776)) || ((((y == 6 && k <= 10) && x == 12201) && c == 6) && (k == 6 || 6 < k))) || ((((k <= 10 && y == 1) && x == 1) && 0 < k) && c == 1)) || ((((10 <= c && k <= 10) && 0 <= k) && y * y == k * y) && 2 * (y * y * y * y * y * y) + 6 * (y * y * y * y * y) + 5 * (y * y * y * y) == x * 12 + y * y)) || ((((x == 0 && k <= 10) && 0 <= k) && c == 0) && y == 0) RESULT: Ultimate proved your program to be correct! [2023-04-02 23:34:52,303 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...