/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/prod4br-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 05:27:26,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 05:27:26,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 05:27:26,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 05:27:26,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 05:27:26,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 05:27:26,161 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 05:27:26,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 05:27:26,164 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 05:27:26,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 05:27:26,170 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 05:27:26,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 05:27:26,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 05:27:26,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 05:27:26,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 05:27:26,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 05:27:26,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 05:27:26,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 05:27:26,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 05:27:26,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 05:27:26,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 05:27:26,181 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 05:27:26,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 05:27:26,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 05:27:26,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 05:27:26,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 05:27:26,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 05:27:26,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 05:27:26,200 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 05:27:26,201 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 05:27:26,201 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 05:27:26,202 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 05:27:26,202 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 05:27:26,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 05:27:26,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 05:27:26,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 05:27:26,204 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 05:27:26,237 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 05:27:26,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 05:27:26,238 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 05:27:26,238 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 05:27:26,239 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 05:27:26,239 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 05:27:26,239 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 05:27:26,239 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 05:27:26,239 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 05:27:26,239 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 05:27:26,240 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 05:27:26,240 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 05:27:26,241 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 05:27:26,241 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 05:27:26,241 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 05:27:26,241 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 05:27:26,241 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 05:27:26,241 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 05:27:26,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 05:27:26,242 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 05:27:26,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 05:27:26,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 05:27:26,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 05:27:26,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 05:27:26,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 05:27:26,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 05:27:26,243 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 05:27:26,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 05:27:26,243 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 05:27:26,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 05:27:26,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 05:27:26,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 05:27:26,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 05:27:26,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 05:27:26,244 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 05:27:26,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 05:27:26,244 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 05:27:26,244 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 05:27:26,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 05:27:26,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 05:27:26,245 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 05:27:26,245 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 05:27:26,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 05:27:26,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 05:27:26,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 05:27:26,469 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 05:27:26,473 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 05:27:26,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound2.c [2023-04-01 05:27:27,673 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 05:27:27,843 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 05:27:27,843 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound2.c [2023-04-01 05:27:27,850 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c315600af/194631e87e0a4845b16a64a65470c86f/FLAGc5dd35d85 [2023-04-01 05:27:27,862 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c315600af/194631e87e0a4845b16a64a65470c86f [2023-04-01 05:27:27,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 05:27:27,865 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 05:27:27,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 05:27:27,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 05:27:27,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 05:27:27,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 05:27:27" (1/1) ... [2023-04-01 05:27:27,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d0b9ac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:27:27, skipping insertion in model container [2023-04-01 05:27:27,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 05:27:27" (1/1) ... [2023-04-01 05:27:27,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 05:27:27,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 05:27:28,028 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/prod4br-ll_valuebound2.c[524,537] [2023-04-01 05:27:28,041 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 05:27:28,048 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 05:27:28,058 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/prod4br-ll_valuebound2.c[524,537] [2023-04-01 05:27:28,065 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 05:27:28,076 INFO L208 MainTranslator]: Completed translation [2023-04-01 05:27:28,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:27:28 WrapperNode [2023-04-01 05:27:28,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 05:27:28,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 05:27:28,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 05:27:28,077 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 05:27:28,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:27:28" (1/1) ... [2023-04-01 05:27:28,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:27:28" (1/1) ... [2023-04-01 05:27:28,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:27:28" (1/1) ... [2023-04-01 05:27:28,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:27:28" (1/1) ... [2023-04-01 05:27:28,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:27:28" (1/1) ... [2023-04-01 05:27:28,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:27:28" (1/1) ... [2023-04-01 05:27:28,113 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:27:28" (1/1) ... [2023-04-01 05:27:28,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:27:28" (1/1) ... [2023-04-01 05:27:28,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 05:27:28,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 05:27:28,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 05:27:28,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 05:27:28,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:27:28" (1/1) ... [2023-04-01 05:27:28,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 05:27:28,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:27:28,150 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 05:27:28,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 05:27:28,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 05:27:28,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 05:27:28,184 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 05:27:28,184 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 05:27:28,184 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-01 05:27:28,184 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 05:27:28,184 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 05:27:28,184 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 05:27:28,184 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 05:27:28,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 05:27:28,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 05:27:28,185 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 05:27:28,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-01 05:27:28,185 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 05:27:28,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 05:27:28,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 05:27:28,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 05:27:28,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 05:27:28,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 05:27:28,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 05:27:28,253 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 05:27:28,255 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 05:27:28,475 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 05:27:28,598 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 05:27:28,598 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 05:27:28,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 05:27:28 BoogieIcfgContainer [2023-04-01 05:27:28,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 05:27:28,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 05:27:28,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 05:27:28,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 05:27:28,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 05:27:27" (1/3) ... [2023-04-01 05:27:28,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2421a60f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 05:27:28, skipping insertion in model container [2023-04-01 05:27:28,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:27:28" (2/3) ... [2023-04-01 05:27:28,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2421a60f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 05:27:28, skipping insertion in model container [2023-04-01 05:27:28,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 05:27:28" (3/3) ... [2023-04-01 05:27:28,611 INFO L112 eAbstractionObserver]: Analyzing ICFG prod4br-ll_valuebound2.c [2023-04-01 05:27:28,627 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 05:27:28,627 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 05:27:28,664 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 05:27:28,670 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;@3b9e6fc0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 05:27:28,670 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 05:27:28,673 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-01 05:27:28,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-04-01 05:27:28,679 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:27:28,680 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:27:28,680 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:27:28,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:27:28,685 INFO L85 PathProgramCache]: Analyzing trace with hash 2002671713, now seen corresponding path program 1 times [2023-04-01 05:27:28,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:27:28,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327322109] [2023-04-01 05:27:28,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:27:28,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:27:28,778 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 05:27:28,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [210071988] [2023-04-01 05:27:28,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:27:28,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:27:28,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:27:28,782 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 05:27:28,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 05:27:28,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:27:28,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 23 conjunts are in the unsatisfiable core [2023-04-01 05:27:28,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:27:29,093 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 05:27:29,094 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 05:27:29,094 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:27:29,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327322109] [2023-04-01 05:27:29,094 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 05:27:29,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210071988] [2023-04-01 05:27:29,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210071988] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:27:29,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:27:29,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 05:27:29,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348580034] [2023-04-01 05:27:29,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:27:29,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 05:27:29,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:27:29,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 05:27:29,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-01 05:27:29,124 INFO L87 Difference]: Start difference. First operand has 27 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 05:27:29,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:27:29,264 INFO L93 Difference]: Finished difference Result 53 states and 74 transitions. [2023-04-01 05:27:29,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 05:27:29,266 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 21 [2023-04-01 05:27:29,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:27:29,273 INFO L225 Difference]: With dead ends: 53 [2023-04-01 05:27:29,273 INFO L226 Difference]: Without dead ends: 32 [2023-04-01 05:27:29,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 05:27:29,280 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 14 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 05:27:29,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 74 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 05:27:29,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-04-01 05:27:29,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2023-04-01 05:27:29,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 17 states have internal predecessors, (17), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-01 05:27:29,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2023-04-01 05:27:29,341 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 21 [2023-04-01 05:27:29,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:27:29,342 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2023-04-01 05:27:29,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 05:27:29,343 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2023-04-01 05:27:29,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-04-01 05:27:29,344 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:27:29,345 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:27:29,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 05:27:29,551 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 [2023-04-01 05:27:29,551 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:27:29,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:27:29,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1116608417, now seen corresponding path program 1 times [2023-04-01 05:27:29,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:27:29,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555363359] [2023-04-01 05:27:29,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:27:29,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:27:29,572 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 05:27:29,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [859595876] [2023-04-01 05:27:29,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:27:29,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:27:29,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:27:29,574 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 05:27:29,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 05:27:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:27:29,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 30 conjunts are in the unsatisfiable core [2023-04-01 05:27:29,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:27:30,017 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-01 05:27:30,018 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 05:27:30,240 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-01 05:27:30,243 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:27:30,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555363359] [2023-04-01 05:27:30,249 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 05:27:30,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859595876] [2023-04-01 05:27:30,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859595876] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 05:27:30,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1170418863] [2023-04-01 05:27:30,273 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-04-01 05:27:30,273 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 05:27:30,276 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 05:27:30,279 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 05:27:30,280 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 05:27:30,338 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-01 05:27:30,593 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 11 for LOIs [2023-04-01 05:27:30,597 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 9 for LOIs [2023-04-01 05:27:30,599 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 05:27:30,605 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 05:27:31,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1170418863] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:27:31,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-01 05:27:31,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [13, 7] total 30 [2023-04-01 05:27:31,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168856364] [2023-04-01 05:27:31,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:27:31,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-01 05:27:31,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:27:31,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-01 05:27:31,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=728, Unknown=0, NotChecked=0, Total=870 [2023-04-01 05:27:31,006 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 15 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 05:27:31,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:27:31,918 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2023-04-01 05:27:31,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 05:27:31,919 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 27 [2023-04-01 05:27:31,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:27:31,919 INFO L225 Difference]: With dead ends: 38 [2023-04-01 05:27:31,920 INFO L226 Difference]: Without dead ends: 30 [2023-04-01 05:27:31,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=292, Invalid=1348, Unknown=0, NotChecked=0, Total=1640 [2023-04-01 05:27:31,922 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 50 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 05:27:31,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 9 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 05:27:31,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-04-01 05:27:31,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-04-01 05:27:31,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-01 05:27:31,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2023-04-01 05:27:31,935 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 27 [2023-04-01 05:27:31,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:27:31,935 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2023-04-01 05:27:31,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 05:27:31,935 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2023-04-01 05:27:31,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-04-01 05:27:31,936 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:27:31,936 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:27:31,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 05:27:32,141 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 [2023-04-01 05:27:32,142 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:27:32,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:27:32,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1613663990, now seen corresponding path program 1 times [2023-04-01 05:27:32,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:27:32,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967441839] [2023-04-01 05:27:32,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:27:32,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:27:32,158 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 05:27:32,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [621067697] [2023-04-01 05:27:32,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:27:32,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:27:32,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:27:32,162 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) [2023-04-01 05:27:32,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 05:27:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:27:32,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 36 conjunts are in the unsatisfiable core [2023-04-01 05:27:32,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:27:33,013 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 05:27:33,014 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 05:27:33,658 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-01 05:27:33,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:27:33,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967441839] [2023-04-01 05:27:33,659 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 05:27:33,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621067697] [2023-04-01 05:27:33,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621067697] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 05:27:33,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1881687891] [2023-04-01 05:27:33,661 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-01 05:27:33,661 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 05:27:33,662 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 05:27:33,662 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 05:27:33,662 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 05:27:33,677 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-01 05:27:35,024 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 54 for LOIs [2023-04-01 05:27:35,092 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 9 for LOIs [2023-04-01 05:27:35,093 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 05:27:35,097 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 05:27:35,789 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '714#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (exists ((v_main_~x~0_BEFORE_CALL_41 Int) (v_main_~a~0_BEFORE_CALL_18 Int) (v_main_~p~0_BEFORE_CALL_19 Int) (v_main_~b~0_BEFORE_CALL_19 Int) (v_main_~y~0_BEFORE_CALL_35 Int) (v_main_~q~0_BEFORE_CALL_20 Int)) (and (or (and (<= v_main_~x~0_BEFORE_CALL_41 2) (<= 1 |#StackHeapBarrier|) (<= v_main_~x~0_BEFORE_CALL_41 (+ v_main_~y~0_BEFORE_CALL_35 1)) (<= 1 v_main_~y~0_BEFORE_CALL_35) (<= v_main_~x~0_BEFORE_CALL_41 (+ |#StackHeapBarrier| 1)) (<= (+ v_main_~y~0_BEFORE_CALL_35 v_main_~x~0_BEFORE_CALL_41) 4) (= |#NULL.offset| 0) (<= v_main_~y~0_BEFORE_CALL_35 (+ |#StackHeapBarrier| 1)) (<= 1 (+ |#StackHeapBarrier| v_main_~x~0_BEFORE_CALL_41)) (<= v_main_~y~0_BEFORE_CALL_35 2) (<= v_main_~y~0_BEFORE_CALL_35 (+ 2 v_main_~x~0_BEFORE_CALL_41)) (<= 0 v_main_~x~0_BEFORE_CALL_41) (<= 2 (+ v_main_~y~0_BEFORE_CALL_35 |#StackHeapBarrier|)) (= |#NULL.base| 0) (<= 1 (+ v_main_~y~0_BEFORE_CALL_35 v_main_~x~0_BEFORE_CALL_41))) (and (<= v_main_~x~0_BEFORE_CALL_41 2) (= v_main_~p~0_BEFORE_CALL_19 1) (<= 1 |#StackHeapBarrier|) (= v_main_~a~0_BEFORE_CALL_18 v_main_~x~0_BEFORE_CALL_41) (= v_main_~q~0_BEFORE_CALL_20 0) (<= 1 v_main_~y~0_BEFORE_CALL_35) (= v_main_~y~0_BEFORE_CALL_35 v_main_~b~0_BEFORE_CALL_19) (= |#NULL.offset| 0) (<= v_main_~y~0_BEFORE_CALL_35 2) (<= 0 v_main_~x~0_BEFORE_CALL_41) (= |#NULL.base| 0))) (not (= (+ (* v_main_~a~0_BEFORE_CALL_18 v_main_~p~0_BEFORE_CALL_19 v_main_~b~0_BEFORE_CALL_19) v_main_~q~0_BEFORE_CALL_20) (* v_main_~y~0_BEFORE_CALL_35 v_main_~x~0_BEFORE_CALL_41))))))' at error location [2023-04-01 05:27:35,789 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 05:27:35,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 05:27:35,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 15 [2023-04-01 05:27:35,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714653823] [2023-04-01 05:27:35,790 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 05:27:35,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-01 05:27:35,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:27:35,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-01 05:27:35,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=645, Unknown=0, NotChecked=0, Total=756 [2023-04-01 05:27:35,792 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 12 states have internal predecessors, (24), 6 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-01 05:27:36,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:27:36,099 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2023-04-01 05:27:36,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 05:27:36,099 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 12 states have internal predecessors, (24), 6 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 28 [2023-04-01 05:27:36,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:27:36,100 INFO L225 Difference]: With dead ends: 41 [2023-04-01 05:27:36,100 INFO L226 Difference]: Without dead ends: 39 [2023-04-01 05:27:36,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=136, Invalid=794, Unknown=0, NotChecked=0, Total=930 [2023-04-01 05:27:36,102 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 29 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 05:27:36,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 89 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 05:27:36,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-04-01 05:27:36,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2023-04-01 05:27:36,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-01 05:27:36,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2023-04-01 05:27:36,114 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 28 [2023-04-01 05:27:36,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:27:36,115 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2023-04-01 05:27:36,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 12 states have internal predecessors, (24), 6 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-01 05:27:36,115 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2023-04-01 05:27:36,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-04-01 05:27:36,116 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:27:36,116 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:27:36,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 05:27:36,322 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 [2023-04-01 05:27:36,323 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:27:36,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:27:36,323 INFO L85 PathProgramCache]: Analyzing trace with hash 616700724, now seen corresponding path program 1 times [2023-04-01 05:27:36,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:27:36,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146059406] [2023-04-01 05:27:36,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:27:36,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:27:36,338 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 05:27:36,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1097868337] [2023-04-01 05:27:36,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:27:36,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:27:36,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:27:36,347 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) [2023-04-01 05:27:36,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 05:27:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:27:36,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 20 conjunts are in the unsatisfiable core [2023-04-01 05:27:36,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:27:37,318 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 05:27:37,318 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 05:27:37,466 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-01 05:27:37,466 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:27:37,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146059406] [2023-04-01 05:27:37,466 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 05:27:37,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097868337] [2023-04-01 05:27:37,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097868337] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 05:27:37,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2090751799] [2023-04-01 05:27:37,468 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-04-01 05:27:37,468 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 05:27:37,469 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 05:27:37,469 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 05:27:37,469 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 05:27:37,483 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-01 05:27:38,601 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-01 05:27:38,604 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 9 for LOIs [2023-04-01 05:27:38,605 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 05:27:38,608 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 05:27:39,176 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1064#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-01 05:27:39,176 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 05:27:39,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 05:27:39,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 16 [2023-04-01 05:27:39,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582236883] [2023-04-01 05:27:39,177 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 05:27:39,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-01 05:27:39,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:27:39,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-01 05:27:39,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=655, Unknown=0, NotChecked=0, Total=756 [2023-04-01 05:27:39,178 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 16 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 6 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2023-04-01 05:27:44,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:27:44,720 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2023-04-01 05:27:44,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-01 05:27:44,720 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 6 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 34 [2023-04-01 05:27:44,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:27:44,721 INFO L225 Difference]: With dead ends: 45 [2023-04-01 05:27:44,721 INFO L226 Difference]: Without dead ends: 41 [2023-04-01 05:27:44,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 69 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=139, Invalid=917, Unknown=0, NotChecked=0, Total=1056 [2023-04-01 05:27:44,723 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 17 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 05:27:44,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 123 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 05:27:44,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-04-01 05:27:44,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2023-04-01 05:27:44,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 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) [2023-04-01 05:27:44,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2023-04-01 05:27:44,736 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 34 [2023-04-01 05:27:44,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:27:44,736 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2023-04-01 05:27:44,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 6 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2023-04-01 05:27:44,736 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2023-04-01 05:27:44,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-04-01 05:27:44,737 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:27:44,737 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:27:44,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 05:27:44,943 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 [2023-04-01 05:27:44,943 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:27:44,943 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:27:44,944 INFO L85 PathProgramCache]: Analyzing trace with hash 93891688, now seen corresponding path program 1 times [2023-04-01 05:27:44,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:27:44,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297835177] [2023-04-01 05:27:44,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:27:44,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:27:44,955 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 05:27:44,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1187025292] [2023-04-01 05:27:44,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:27:44,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:27:44,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:27:44,957 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) [2023-04-01 05:27:44,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 05:27:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:27:45,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 26 conjunts are in the unsatisfiable core [2023-04-01 05:27:45,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:27:45,718 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-01 05:27:45,718 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 05:27:45,833 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-04-01 05:27:45,833 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:27:45,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297835177] [2023-04-01 05:27:45,834 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 05:27:45,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187025292] [2023-04-01 05:27:45,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187025292] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-01 05:27:45,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 05:27:45,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 15 [2023-04-01 05:27:45,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696475769] [2023-04-01 05:27:45,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:27:45,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 05:27:45,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:27:45,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 05:27:45,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-04-01 05:27:45,836 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-01 05:27:45,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:27:45,873 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2023-04-01 05:27:45,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 05:27:45,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2023-04-01 05:27:45,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:27:45,873 INFO L225 Difference]: With dead ends: 36 [2023-04-01 05:27:45,873 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 05:27:45,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-04-01 05:27:45,874 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 2 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 05:27:45,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 74 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 05:27:45,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 05:27:45,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 05:27:45,875 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) [2023-04-01 05:27:45,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 05:27:45,875 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2023-04-01 05:27:45,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:27:45,875 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 05:27:45,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-01 05:27:45,876 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 05:27:45,876 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 05:27:45,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 05:27:45,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-04-01 05:27:46,078 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 [2023-04-01 05:27:46,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-01 05:27:47,610 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 5) no Hoare annotation was computed. [2023-04-01 05:27:47,611 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 5) no Hoare annotation was computed. [2023-04-01 05:27:47,611 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 8 10) the Hoare annotation is: true [2023-04-01 05:27:47,611 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2023-04-01 05:27:47,611 INFO L899 garLoopResultBuilder]: For program point L27(line 27) no Hoare annotation was computed. [2023-04-01 05:27:47,611 INFO L899 garLoopResultBuilder]: For program point L58(line 58) no Hoare annotation was computed. [2023-04-01 05:27:47,611 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 19 60) no Hoare annotation was computed. [2023-04-01 05:27:47,611 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 19 60) the Hoare annotation is: true [2023-04-01 05:27:47,611 INFO L895 garLoopResultBuilder]: At program point L34-2(lines 34 55) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (and (<= main_~y~0 2) (<= 0 main_~x~0) (= main_~q~0 (* main_~y~0 main_~x~0)) (<= 1 main_~y~0) (= (* main_~b~0 main_~a~0) 0) (<= main_~x~0 2)) (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 13 (select |#length| 2))))) [2023-04-01 05:27:47,611 INFO L895 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (and (<= main_~y~0 2147483647) (<= 0 main_~x~0) (<= 0 (+ main_~y~0 2147483648)) (<= main_~x~0 2)) (not (= 13 (select |#length| 2))))) [2023-04-01 05:27:47,612 INFO L895 garLoopResultBuilder]: At program point L26-1(line 26) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (and (<= 0 main_~y~0) (<= main_~y~0 2) (<= 0 main_~x~0) (<= main_~x~0 2)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 13 (select |#length| 2))))) [2023-04-01 05:27:47,612 INFO L895 garLoopResultBuilder]: At program point L57(line 57) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (and (<= main_~y~0 2) (<= 0 main_~x~0) (= main_~q~0 (* main_~y~0 main_~x~0)) (<= 1 main_~y~0) (= (* main_~b~0 main_~a~0) 0) (<= main_~x~0 2)) (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 13 (select |#length| 2))))) [2023-04-01 05:27:47,612 INFO L895 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (and (<= main_~x~0 2147483647) (<= 0 (+ main_~x~0 2147483648))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 13 (select |#length| 2))))) [2023-04-01 05:27:47,612 INFO L899 garLoopResultBuilder]: For program point L24-1(line 24) no Hoare annotation was computed. [2023-04-01 05:27:47,612 INFO L895 garLoopResultBuilder]: At program point L47-2(lines 34 55) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (and (<= main_~y~0 2) (<= 0 main_~x~0) (= (+ main_~q~0 (* main_~b~0 main_~a~0 main_~p~0)) (* main_~y~0 main_~x~0)) (<= 1 main_~y~0) (<= main_~x~0 2)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 13 (select |#length| 2))))) [2023-04-01 05:27:47,612 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (and (<= main_~y~0 2) (<= 0 main_~x~0) (= (+ main_~q~0 (* main_~b~0 main_~a~0 main_~p~0)) (* main_~y~0 main_~x~0)) (<= 1 main_~y~0) (<= main_~x~0 2)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 13 (select |#length| 2))))) [2023-04-01 05:27:47,612 INFO L899 garLoopResultBuilder]: For program point L35-1(lines 34 55) no Hoare annotation was computed. [2023-04-01 05:27:47,613 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2023-04-01 05:27:47,613 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-01 05:27:47,613 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-01 05:27:47,613 INFO L895 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (= 13 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2023-04-01 05:27:47,613 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-01 05:27:47,613 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-01 05:27:47,613 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2023-04-01 05:27:47,613 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2023-04-01 05:27:47,613 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2023-04-01 05:27:47,613 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2023-04-01 05:27:47,613 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 17) the Hoare annotation is: true [2023-04-01 05:27:47,613 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2023-04-01 05:27:47,616 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-04-01 05:27:47,617 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 05:27:47,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 05:27:47 BoogieIcfgContainer [2023-04-01 05:27:47,629 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 05:27:47,630 INFO L158 Benchmark]: Toolchain (without parser) took 19764.79ms. Allocated memory was 268.4MB in the beginning and 569.4MB in the end (delta: 300.9MB). Free memory was 218.7MB in the beginning and 340.4MB in the end (delta: -121.8MB). Peak memory consumption was 324.4MB. Max. memory is 8.0GB. [2023-04-01 05:27:47,630 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory is still 137.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 05:27:47,630 INFO L158 Benchmark]: CACSL2BoogieTranslator took 210.33ms. Allocated memory is still 268.4MB. Free memory was 218.7MB in the beginning and 207.7MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-01 05:27:47,630 INFO L158 Benchmark]: Boogie Preprocessor took 38.74ms. Allocated memory is still 268.4MB. Free memory was 207.7MB in the beginning and 206.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-01 05:27:47,631 INFO L158 Benchmark]: RCFGBuilder took 488.21ms. Allocated memory is still 268.4MB. Free memory was 206.1MB in the beginning and 188.2MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-04-01 05:27:47,631 INFO L158 Benchmark]: TraceAbstraction took 19023.23ms. Allocated memory was 268.4MB in the beginning and 569.4MB in the end (delta: 300.9MB). Free memory was 187.2MB in the beginning and 340.4MB in the end (delta: -153.2MB). Peak memory consumption was 292.9MB. Max. memory is 8.0GB. [2023-04-01 05:27:47,632 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 188.7MB. Free memory is still 137.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 210.33ms. Allocated memory is still 268.4MB. Free memory was 218.7MB in the beginning and 207.7MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.74ms. Allocated memory is still 268.4MB. Free memory was 207.7MB in the beginning and 206.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 488.21ms. Allocated memory is still 268.4MB. Free memory was 206.1MB in the beginning and 188.2MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 19023.23ms. Allocated memory was 268.4MB in the beginning and 569.4MB in the end (delta: 300.9MB). Free memory was 187.2MB in the beginning and 340.4MB in the end (delta: -153.2MB). Peak memory consumption was 292.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: 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, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 19.0s, OverallIterations: 5, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 123 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 112 mSDsluCounter, 369 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 291 mSDsCounter, 70 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 628 IncrementalHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 70 mSolverCounterUnsat, 78 mSDtfsCounter, 628 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 384 GetRequests, 253 SyntacticMatches, 12 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 911 ImplicationChecksByTransitivity, 8.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=4, InterpolantAutomatonStates: 54, 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, 5 MinimizatonAttempts, 13 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 23 PreInvPairs, 31 NumberOfFragments, 689 HoareAnnotationTreeSize, 23 FomulaSimplifications, 388 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 13 FomulaSimplificationsInter, 3352 FormulaSimplificationTreeSizeReductionInter, 1.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 149 NumberOfCodeBlocks, 149 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 268 ConstructedInterpolants, 3 QuantifiedInterpolants, 1580 SizeOfPredicates, 30 NumberOfNonLiveVariables, 518 ConjunctsInSsa, 135 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 104/130 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 0.3s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 5, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 23, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 16, TOOLS_POST_TIME: 0.0s, TOOLS_POST_CALL_APPLICATIONS: 17, TOOLS_POST_CALL_TIME: 0.1s, TOOLS_POST_RETURN_APPLICATIONS: 10, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 43, TOOLS_QUANTIFIERELIM_TIME: 0.2s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 64, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 15, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 23, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 10, CALL_SUMMARIZER_CACHE_MISSES: 3, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 208, DAG_COMPRESSION_RETAINED_NODES: 72, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(\valid[1] == 1)) || !(#NULL == 0)) || ((((y <= 2 && 0 <= x) && q + b * a * p == y * x) && 1 <= y) && x <= 2)) || !(\valid[2] == 1)) || unknown-#StackHeapBarrier-unknown <= 0) || !(13 == unknown-#length-unknown[2]) RESULT: Ultimate proved your program to be correct! [2023-04-01 05:27:47,654 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...