/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 IntervalDomain -i ../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 23:30:23,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 23:30:23,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 23:30:24,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 23:30:24,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 23:30:24,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 23:30:24,037 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 23:30:24,039 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 23:30:24,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 23:30:24,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 23:30:24,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 23:30:24,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 23:30:24,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 23:30:24,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 23:30:24,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 23:30:24,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 23:30:24,048 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 23:30:24,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 23:30:24,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 23:30:24,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 23:30:24,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 23:30:24,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 23:30:24,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 23:30:24,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 23:30:24,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 23:30:24,064 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 23:30:24,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 23:30:24,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 23:30:24,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 23:30:24,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 23:30:24,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 23:30:24,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 23:30:24,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 23:30:24,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 23:30:24,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 23:30:24,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 23:30:24,070 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 [2023-03-31 23:30:24,095 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 23:30:24,095 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 23:30:24,095 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 23:30:24,095 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 23:30:24,096 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 23:30:24,096 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 23:30:24,096 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 23:30:24,096 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 23:30:24,096 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 23:30:24,096 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 23:30:24,097 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 23:30:24,097 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 23:30:24,097 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 23:30:24,097 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 23:30:24,097 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 23:30:24,098 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 23:30:24,098 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 23:30:24,098 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 23:30:24,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 23:30:24,098 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 23:30:24,098 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 23:30:24,098 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 23:30:24,098 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 23:30:24,098 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 23:30:24,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 23:30:24,099 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 23:30:24,099 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 23:30:24,099 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 23:30:24,099 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 23:30:24,099 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 23:30:24,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 23:30:24,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 23:30:24,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:30:24,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 23:30:24,100 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 23:30:24,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 23:30:24,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 23:30:24,100 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 23:30:24,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 23:30:24,100 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 23:30:24,100 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 23:30:24,100 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 23:30:24,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 23:30:24,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 23:30:24,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 23:30:24,258 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 23:30:24,259 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 23:30:24,259 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound2.c [2023-03-31 23:30:25,261 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 23:30:25,451 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 23:30:25,451 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound2.c [2023-03-31 23:30:25,458 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a4553a6b/b2b598ac63d345fda0bcff5069a4bd3e/FLAG6331bf33e [2023-03-31 23:30:25,468 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a4553a6b/b2b598ac63d345fda0bcff5069a4bd3e [2023-03-31 23:30:25,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 23:30:25,471 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 23:30:25,471 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 23:30:25,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 23:30:25,473 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 23:30:25,474 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:30:25" (1/1) ... [2023-03-31 23:30:25,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e2e93bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:30:25, skipping insertion in model container [2023-03-31 23:30:25,475 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:30:25" (1/1) ... [2023-03-31 23:30:25,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 23:30:25,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 23:30:25,564 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_valuebound2.c[458,471] [2023-03-31 23:30:25,574 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:30:25,582 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 23:30:25,589 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_valuebound2.c[458,471] [2023-03-31 23:30:25,594 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:30:25,602 INFO L208 MainTranslator]: Completed translation [2023-03-31 23:30:25,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:30:25 WrapperNode [2023-03-31 23:30:25,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 23:30:25,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 23:30:25,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 23:30:25,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 23:30:25,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:30:25" (1/1) ... [2023-03-31 23:30:25,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:30:25" (1/1) ... [2023-03-31 23:30:25,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:30:25" (1/1) ... [2023-03-31 23:30:25,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:30:25" (1/1) ... [2023-03-31 23:30:25,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:30:25" (1/1) ... [2023-03-31 23:30:25,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:30:25" (1/1) ... [2023-03-31 23:30:25,618 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:30:25" (1/1) ... [2023-03-31 23:30:25,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:30:25" (1/1) ... [2023-03-31 23:30:25,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 23:30:25,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 23:30:25,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 23:30:25,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 23:30:25,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:30:25" (1/1) ... [2023-03-31 23:30:25,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:30:25,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:30:25,639 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) [2023-03-31 23:30:25,641 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 [2023-03-31 23:30:25,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 23:30:25,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 23:30:25,671 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 23:30:25,671 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 23:30:25,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-03-31 23:30:25,671 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 23:30:25,671 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 23:30:25,671 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 23:30:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 23:30:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 23:30:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2023-03-31 23:30:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 23:30:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-03-31 23:30:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 23:30:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 23:30:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 23:30:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 23:30:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 23:30:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 23:30:25,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 23:30:25,716 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 23:30:25,717 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 23:30:25,801 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 23:30:25,816 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 23:30:25,816 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-31 23:30:25,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:30:25 BoogieIcfgContainer [2023-03-31 23:30:25,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 23:30:25,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 23:30:25,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 23:30:25,821 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 23:30:25,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 11:30:25" (1/3) ... [2023-03-31 23:30:25,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@253382c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:30:25, skipping insertion in model container [2023-03-31 23:30:25,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:30:25" (2/3) ... [2023-03-31 23:30:25,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@253382c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:30:25, skipping insertion in model container [2023-03-31 23:30:25,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:30:25" (3/3) ... [2023-03-31 23:30:25,823 INFO L112 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound2.c [2023-03-31 23:30:25,834 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 23:30:25,834 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 23:30:25,862 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 23:30:25,868 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;@2946ec8b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 23:30:25,868 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 23:30:25,870 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) [2023-03-31 23:30:25,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-03-31 23:30:25,876 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:30:25,876 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:30:25,877 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:30:25,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:30:25,882 INFO L85 PathProgramCache]: Analyzing trace with hash 395619074, now seen corresponding path program 1 times [2023-03-31 23:30:25,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:30:25,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244107356] [2023-03-31 23:30:25,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:30:25,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:30:25,976 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-03-31 23:30:25,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [704543161] [2023-03-31 23:30:25,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:30:25,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:30:25,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:30:26,001 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) [2023-03-31 23:30:26,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 23:30:26,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:30:26,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2023-03-31 23:30:26,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:30:26,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-31 23:30:26,236 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 23:30:26,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:30:26,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244107356] [2023-03-31 23:30:26,237 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-03-31 23:30:26,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704543161] [2023-03-31 23:30:26,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704543161] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:30:26,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:30:26,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 23:30:26,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458430891] [2023-03-31 23:30:26,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:30:26,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 23:30:26,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:30:26,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 23:30:26,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 23:30:26,261 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) [2023-03-31 23:30:26,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:30:26,497 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions. [2023-03-31 23:30:26,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 23:30:26,499 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 [2023-03-31 23:30:26,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:30:26,503 INFO L225 Difference]: With dead ends: 51 [2023-03-31 23:30:26,503 INFO L226 Difference]: Without dead ends: 28 [2023-03-31 23:30:26,506 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 [2023-03-31 23:30:26,508 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 23:30:26,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 72 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 23:30:26,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-03-31 23:30:26,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-03-31 23:30:26,574 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) [2023-03-31 23:30:26,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2023-03-31 23:30:26,575 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 17 [2023-03-31 23:30:26,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:30:26,576 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2023-03-31 23:30:26,576 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) [2023-03-31 23:30:26,576 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2023-03-31 23:30:26,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-03-31 23:30:26,577 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:30:26,577 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] [2023-03-31 23:30:26,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-03-31 23:30:26,778 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 [2023-03-31 23:30:26,778 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:30:26,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:30:26,779 INFO L85 PathProgramCache]: Analyzing trace with hash 398349892, now seen corresponding path program 1 times [2023-03-31 23:30:26,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:30:26,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915411582] [2023-03-31 23:30:26,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:30:26,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:30:26,792 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-03-31 23:30:26,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2044061585] [2023-03-31 23:30:26,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:30:26,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:30:26,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:30:26,795 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) [2023-03-31 23:30:26,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 23:30:26,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:30:26,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 19 conjunts are in the unsatisfiable core [2023-03-31 23:30:26,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:30:26,914 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-03-31 23:30:26,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 23:30:27,304 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-03-31 23:30:27,304 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:30:27,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915411582] [2023-03-31 23:30:27,305 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-03-31 23:30:27,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044061585] [2023-03-31 23:30:27,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044061585] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 23:30:27,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [806766326] [2023-03-31 23:30:27,332 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2023-03-31 23:30:27,332 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 23:30:27,334 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 23:30:27,337 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 23:30:27,337 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 23:30:27,396 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 8 for LOIs [2023-03-31 23:30:27,706 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 49 for LOIs [2023-03-31 23:30:27,770 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 13 for LOIs [2023-03-31 23:30:27,773 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 23:30:27,777 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 23:30:32,293 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '352#(and (exists ((v_main_~x~0_BEFORE_CALL_11 Int) (v_main_~y~0_BEFORE_CALL_11 Int) (v_main_~c~0_BEFORE_CALL_7 Int) (v_main_~k~0_BEFORE_CALL_11 Int)) (and (or (and (<= 1 v_main_~y~0_BEFORE_CALL_11) (<= v_main_~c~0_BEFORE_CALL_7 3) (<= 1 v_main_~x~0_BEFORE_CALL_11) (<= 0 v_main_~k~0_BEFORE_CALL_11) (= |#NULL.offset| 0) (<= v_main_~k~0_BEFORE_CALL_11 2) (<= 1 v_main_~c~0_BEFORE_CALL_7) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) (and (= v_main_~y~0_BEFORE_CALL_11 0) (= v_main_~x~0_BEFORE_CALL_11 0) (<= 0 v_main_~k~0_BEFORE_CALL_11) (= v_main_~c~0_BEFORE_CALL_7 0) (= |#NULL.offset| 0) (<= v_main_~k~0_BEFORE_CALL_11 2) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) (not (= (+ (* v_main_~x~0_BEFORE_CALL_11 12) (* v_main_~y~0_BEFORE_CALL_11 v_main_~y~0_BEFORE_CALL_11)) (+ (* (* v_main_~y~0_BEFORE_CALL_11 v_main_~y~0_BEFORE_CALL_11 v_main_~y~0_BEFORE_CALL_11 v_main_~y~0_BEFORE_CALL_11 v_main_~y~0_BEFORE_CALL_11) 6) (* (* v_main_~y~0_BEFORE_CALL_11 v_main_~y~0_BEFORE_CALL_11 v_main_~y~0_BEFORE_CALL_11 v_main_~y~0_BEFORE_CALL_11 v_main_~y~0_BEFORE_CALL_11 v_main_~y~0_BEFORE_CALL_11) 2) (* 5 (* v_main_~y~0_BEFORE_CALL_11 v_main_~y~0_BEFORE_CALL_11 v_main_~y~0_BEFORE_CALL_11 v_main_~y~0_BEFORE_CALL_11))))))) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-03-31 23:30:32,293 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 23:30:32,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-03-31 23:30:32,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2023-03-31 23:30:32,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034870746] [2023-03-31 23:30:32,294 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-03-31 23:30:32,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-31 23:30:32,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:30:32,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-31 23:30:32,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=425, Unknown=2, NotChecked=0, Total=506 [2023-03-31 23:30:32,296 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) [2023-03-31 23:30:32,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:30:32,381 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2023-03-31 23:30:32,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-31 23:30:32,381 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 [2023-03-31 23:30:32,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:30:32,382 INFO L225 Difference]: With dead ends: 39 [2023-03-31 23:30:32,382 INFO L226 Difference]: Without dead ends: 35 [2023-03-31 23:30:32,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=96, Invalid=502, Unknown=2, NotChecked=0, Total=600 [2023-03-31 23:30:32,383 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 16 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2023-03-31 23:30:32,384 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] [2023-03-31 23:30:32,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-03-31 23:30:32,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2023-03-31 23:30:32,389 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) [2023-03-31 23:30:32,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2023-03-31 23:30:32,390 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 24 [2023-03-31 23:30:32,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:30:32,390 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2023-03-31 23:30:32,390 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) [2023-03-31 23:30:32,390 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2023-03-31 23:30:32,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-03-31 23:30:32,391 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:30:32,391 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] [2023-03-31 23:30:32,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-31 23:30:32,595 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 [2023-03-31 23:30:32,595 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:30:32,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:30:32,596 INFO L85 PathProgramCache]: Analyzing trace with hash 2024645172, now seen corresponding path program 1 times [2023-03-31 23:30:32,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:30:32,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267799087] [2023-03-31 23:30:32,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:30:32,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:30:32,606 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-03-31 23:30:32,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [825311587] [2023-03-31 23:30:32,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:30:32,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:30:32,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:30:32,607 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) [2023-03-31 23:30:32,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-31 23:30:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:30:32,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 24 conjunts are in the unsatisfiable core [2023-03-31 23:30:32,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:30:32,776 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-03-31 23:30:32,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 23:30:33,028 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:30:33,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267799087] [2023-03-31 23:30:33,029 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-03-31 23:30:33,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825311587] [2023-03-31 23:30:33,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825311587] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 23:30:33,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [730720648] [2023-03-31 23:30:33,031 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-03-31 23:30:33,031 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 23:30:33,031 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 23:30:33,031 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 23:30:33,032 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 23:30:33,071 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 8 for LOIs [2023-03-31 23:30:33,411 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-03-31 23:30:33,414 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 13 for LOIs [2023-03-31 23:30:33,416 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 23:30:33,420 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 23:30:33,711 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 [2023-03-31 23:30:33,711 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 23:30:33,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-03-31 23:30:33,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-03-31 23:30:33,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884364328] [2023-03-31 23:30:33,712 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-03-31 23:30:33,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 23:30:33,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:30:33,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 23:30:33,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2023-03-31 23:30:33,713 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) [2023-03-31 23:30:33,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:30:33,830 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2023-03-31 23:30:33,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-31 23:30:33,831 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 [2023-03-31 23:30:33,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:30:33,831 INFO L225 Difference]: With dead ends: 43 [2023-03-31 23:30:33,832 INFO L226 Difference]: Without dead ends: 37 [2023-03-31 23:30:33,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 60 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=702, Unknown=0, NotChecked=0, Total=812 [2023-03-31 23:30:33,833 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 [2023-03-31 23:30:33,833 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] [2023-03-31 23:30:33,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-03-31 23:30:33,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-03-31 23:30:33,838 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) [2023-03-31 23:30:33,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2023-03-31 23:30:33,839 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 35 [2023-03-31 23:30:33,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:30:33,839 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2023-03-31 23:30:33,839 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) [2023-03-31 23:30:33,839 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2023-03-31 23:30:33,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-03-31 23:30:33,840 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:30:33,840 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] [2023-03-31 23:30:33,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-03-31 23:30:34,041 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 [2023-03-31 23:30:34,041 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:30:34,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:30:34,042 INFO L85 PathProgramCache]: Analyzing trace with hash -170934026, now seen corresponding path program 2 times [2023-03-31 23:30:34,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:30:34,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794266984] [2023-03-31 23:30:34,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:30:34,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:30:34,080 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-03-31 23:30:34,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1964237196] [2023-03-31 23:30:34,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-03-31 23:30:34,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:30:34,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:30:34,087 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) [2023-03-31 23:30:34,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-31 23:30:34,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-03-31 23:30:34,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 23:30:34,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 24 conjunts are in the unsatisfiable core [2023-03-31 23:30:34,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:30:34,321 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-03-31 23:30:34,321 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 23:30:34,460 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:30:34,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794266984] [2023-03-31 23:30:34,460 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-03-31 23:30:34,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964237196] [2023-03-31 23:30:34,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964237196] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 23:30:34,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [875422765] [2023-03-31 23:30:34,464 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-03-31 23:30:34,464 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 23:30:34,464 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 23:30:34,464 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 23:30:34,464 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 23:30:34,508 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 8 for LOIs [2023-03-31 23:30:34,646 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-03-31 23:30:34,648 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 13 for LOIs [2023-03-31 23:30:34,650 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 23:30:34,652 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 23:30:34,945 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '973#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-03-31 23:30:34,946 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 23:30:34,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-03-31 23:30:34,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-03-31 23:30:34,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005853376] [2023-03-31 23:30:34,946 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-03-31 23:30:34,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 23:30:34,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:30:34,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 23:30:34,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2023-03-31 23:30:34,947 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) [2023-03-31 23:30:35,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:30:35,073 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2023-03-31 23:30:35,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-03-31 23:30:35,073 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 [2023-03-31 23:30:35,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:30:35,073 INFO L225 Difference]: With dead ends: 46 [2023-03-31 23:30:35,074 INFO L226 Difference]: Without dead ends: 40 [2023-03-31 23:30:35,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2023-03-31 23:30:35,075 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 7 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 23:30:35,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 105 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 23:30:35,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-03-31 23:30:35,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-03-31 23:30:35,080 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) [2023-03-31 23:30:35,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2023-03-31 23:30:35,081 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 42 [2023-03-31 23:30:35,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:30:35,081 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2023-03-31 23:30:35,081 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) [2023-03-31 23:30:35,081 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2023-03-31 23:30:35,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-03-31 23:30:35,082 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:30:35,082 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] [2023-03-31 23:30:35,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-03-31 23:30:35,287 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 [2023-03-31 23:30:35,287 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:30:35,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:30:35,288 INFO L85 PathProgramCache]: Analyzing trace with hash -363600908, now seen corresponding path program 3 times [2023-03-31 23:30:35,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:30:35,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009164577] [2023-03-31 23:30:35,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:30:35,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:30:35,295 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-03-31 23:30:35,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1357505055] [2023-03-31 23:30:35,295 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-03-31 23:30:35,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:30:35,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:30:35,296 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) [2023-03-31 23:30:35,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-03-31 23:30:35,327 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-03-31 23:30:35,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 23:30:35,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjunts are in the unsatisfiable core [2023-03-31 23:30:35,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:30:35,383 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-03-31 23:30:35,383 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 23:30:35,437 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-03-31 23:30:35,437 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:30:35,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009164577] [2023-03-31 23:30:35,437 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-03-31 23:30:35,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357505055] [2023-03-31 23:30:35,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357505055] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 23:30:35,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [879036249] [2023-03-31 23:30:35,438 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-03-31 23:30:35,439 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 23:30:35,439 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 23:30:35,439 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 23:30:35,439 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 23:30:35,450 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 8 for LOIs [2023-03-31 23:30:35,549 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-03-31 23:30:35,551 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 13 for LOIs [2023-03-31 23:30:35,552 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 23:30:35,555 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 23:30:35,804 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1422#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-03-31 23:30:35,804 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 23:30:35,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-03-31 23:30:35,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-03-31 23:30:35,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637692349] [2023-03-31 23:30:35,805 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-03-31 23:30:35,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-31 23:30:35,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:30:35,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-31 23:30:35,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2023-03-31 23:30:35,815 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 11 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 10 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2023-03-31 23:30:35,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:30:35,845 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2023-03-31 23:30:35,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 23:30:35,845 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 10 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) Word has length 49 [2023-03-31 23:30:35,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:30:35,847 INFO L225 Difference]: With dead ends: 45 [2023-03-31 23:30:35,847 INFO L226 Difference]: Without dead ends: 0 [2023-03-31 23:30:35,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2023-03-31 23:30:35,848 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:30:35,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 23:30:35,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-03-31 23:30:35,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-03-31 23:30:35,849 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) [2023-03-31 23:30:35,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-03-31 23:30:35,850 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2023-03-31 23:30:35,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:30:35,851 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-03-31 23:30:35,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 10 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2023-03-31 23:30:35,854 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-03-31 23:30:35,854 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-03-31 23:30:35,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 23:30:35,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-03-31 23:30:36,061 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 [2023-03-31 23:30:36,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-03-31 23:30:36,145 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2023-03-31 23:30:36,145 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 3) no Hoare annotation was computed. [2023-03-31 23:30:36,146 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 6 8) the Hoare annotation is: true [2023-03-31 23:30:36,146 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2023-03-31 23:30:36,146 INFO L895 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (let ((.cse0 (<= main_~k~0 2))) (or (and (= main_~x~0 33) (= main_~y~0 2) (< 1 main_~k~0) .cse0 (<= main_~c~0 2) (<= 2 main_~c~0)) (and (= main_~x~0 0) (<= 0 main_~k~0) .cse0 (= main_~c~0 0) (= main_~y~0 0)) (and (= main_~y~0 1) .cse0 (= main_~x~0 1) (< 0 main_~k~0) (= main_~c~0 1)))) [2023-03-31 23:30:36,146 INFO L899 garLoopResultBuilder]: For program point L29-1(lines 28 37) no Hoare annotation was computed. [2023-03-31 23:30:36,146 INFO L895 garLoopResultBuilder]: At program point L28-2(lines 28 37) the Hoare annotation is: (let ((.cse0 (<= main_~k~0 2))) (or (and (= main_~x~0 33) (= main_~y~0 2) (< 1 main_~k~0) .cse0 (<= main_~c~0 2) (<= 2 main_~c~0)) (and (= main_~x~0 0) (<= 0 main_~k~0) .cse0 (= main_~c~0 0) (= main_~y~0 0)) (and (= main_~y~0 1) .cse0 (= main_~x~0 1) (< 0 main_~k~0) (= main_~c~0 1)))) [2023-03-31 23:30:36,146 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_~k~0 1) (= main_~y~0 1) (= main_~x~0 1) (< 0 main_~k~0) (<= main_~c~0 1)) (and (= main_~x~0 33) (= main_~y~0 2) (< 1 main_~k~0) (<= main_~k~0 2) (<= main_~c~0 2))) [2023-03-31 23:30:36,146 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 17 42) no Hoare annotation was computed. [2023-03-31 23:30:36,146 INFO L899 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2023-03-31 23:30:36,147 INFO L902 garLoopResultBuilder]: At program point L21(line 21) the Hoare annotation is: true [2023-03-31 23:30:36,147 INFO L895 garLoopResultBuilder]: At program point L21-1(line 21) the Hoare annotation is: (and (<= 0 main_~k~0) (<= main_~k~0 2)) [2023-03-31 23:30:36,147 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 17 42) the Hoare annotation is: true [2023-03-31 23:30:36,147 INFO L899 garLoopResultBuilder]: For program point L40(line 40) no Hoare annotation was computed. [2023-03-31 23:30:36,147 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_~k~0 1) (= main_~y~0 1) (= main_~x~0 1) (< 0 main_~k~0) (<= main_~c~0 1)) (and (= main_~x~0 33) (= main_~y~0 2) (< 1 main_~k~0) (<= main_~k~0 2) (<= main_~c~0 2))) [2023-03-31 23:30:36,147 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-03-31 23:30:36,147 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-03-31 23:30:36,147 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-03-31 23:30:36,147 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-03-31 23:30:36,147 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-03-31 23:30:36,147 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-03-31 23:30:36,147 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2023-03-31 23:30:36,147 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2023-03-31 23:30:36,147 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2023-03-31 23:30:36,147 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 9 15) the Hoare annotation is: true [2023-03-31 23:30:36,147 INFO L899 garLoopResultBuilder]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2023-03-31 23:30:36,148 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2023-03-31 23:30:36,149 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-03-31 23:30:36,151 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 23:30:36,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 11:30:36 BoogieIcfgContainer [2023-03-31 23:30:36,162 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 23:30:36,162 INFO L158 Benchmark]: Toolchain (without parser) took 10691.68ms. Allocated memory was 313.5MB in the beginning and 487.6MB in the end (delta: 174.1MB). Free memory was 276.0MB in the beginning and 428.4MB in the end (delta: -152.3MB). Peak memory consumption was 23.3MB. Max. memory is 8.0GB. [2023-03-31 23:30:36,162 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 175.1MB. Free memory is still 123.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 23:30:36,163 INFO L158 Benchmark]: CACSL2BoogieTranslator took 131.02ms. Allocated memory is still 313.5MB. Free memory was 275.5MB in the beginning and 265.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-03-31 23:30:36,163 INFO L158 Benchmark]: Boogie Preprocessor took 16.74ms. Allocated memory is still 313.5MB. Free memory was 265.0MB in the beginning and 263.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-03-31 23:30:36,163 INFO L158 Benchmark]: RCFGBuilder took 198.02ms. Allocated memory is still 313.5MB. Free memory was 263.4MB in the beginning and 250.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-03-31 23:30:36,163 INFO L158 Benchmark]: TraceAbstraction took 10342.63ms. Allocated memory was 313.5MB in the beginning and 487.6MB in the end (delta: 174.1MB). Free memory was 249.8MB in the beginning and 428.4MB in the end (delta: -178.6MB). There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 23:30:36,164 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 175.1MB. Free memory is still 123.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 131.02ms. Allocated memory is still 313.5MB. Free memory was 275.5MB in the beginning and 265.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.74ms. Allocated memory is still 313.5MB. Free memory was 265.0MB in the beginning and 263.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 198.02ms. Allocated memory is still 313.5MB. Free memory was 263.4MB in the beginning and 250.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 10342.63ms. Allocated memory was 313.5MB in the beginning and 487.6MB in the end (delta: 174.1MB). Free memory was 249.8MB in the beginning and 428.4MB in the end (delta: -178.6MB). There was no memory consumed. 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: 10.3s, OverallIterations: 5, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 48 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 42 mSDsluCounter, 436 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 345 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 461 IncrementalHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 91 mSDtfsCounter, 461 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 430 GetRequests, 319 SyntacticMatches, 10 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 6.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=4, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 27 PreInvPairs, 39 NumberOfFragments, 198 HoareAnnotationTreeSize, 27 FomulaSimplifications, 346 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 167 NumberOfCodeBlocks, 159 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 233 ConstructedInterpolants, 0 QuantifiedInterpolants, 731 SizeOfPredicates, 14 NumberOfNonLiveVariables, 495 ConjunctsInSsa, 91 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 191/220 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: ((((((x == 33 && y == 2) && 1 < k) && k <= 2) && c <= 2) && 2 <= c) || ((((x == 0 && 0 <= k) && k <= 2) && c == 0) && y == 0)) || ((((y == 1 && k <= 2) && x == 1) && 0 < k) && c == 1) RESULT: Ultimate proved your program to be correct! [2023-03-31 23:30:36,182 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...