/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-fpi/s5if.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:18:58,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:18:58,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:18:58,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:18:58,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:18:58,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:18:58,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:18:58,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:18:58,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:18:58,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:18:58,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:18:58,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:18:58,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:18:58,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:18:58,379 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:18:58,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:18:58,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:18:58,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:18:58,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:18:58,402 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:18:58,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:18:58,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:18:58,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:18:58,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:18:58,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:18:58,422 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:18:58,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:18:58,425 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:18:58,425 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:18:58,426 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 09:18:58,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 09:18:58,428 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 09:18:58,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 09:18:58,431 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 09:18:58,432 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 09:18:58,432 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 09:18:58,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 09:18:58,433 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 09:18:58,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:18:58,435 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:18:58,436 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:18:58,444 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 09:18:58,495 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:18:58,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:18:58,500 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:18:58,501 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:18:58,501 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:18:58,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:18:58,502 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:18:58,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:18:58,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:18:58,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:18:58,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:18:58,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:18:58,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:18:58,505 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:18:58,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:18:58,505 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:18:58,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:18:58,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:18:58,506 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:18:58,506 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:18:58,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:18:58,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:18:58,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:18:58,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:18:58,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:18:58,508 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:18:58,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:18:58,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:18:58,508 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:18:58,509 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:18:58,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:18:58,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:18:58,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:18:58,991 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:18:58,992 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:18:58,993 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s5if.c [2020-10-28 09:18:59,072 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2450d334/97e8e234d96a4429b3901c095ce5d2fe/FLAGb99cf8c80 [2020-10-28 09:18:59,723 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:18:59,723 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s5if.c [2020-10-28 09:18:59,731 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2450d334/97e8e234d96a4429b3901c095ce5d2fe/FLAGb99cf8c80 [2020-10-28 09:19:00,099 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2450d334/97e8e234d96a4429b3901c095ce5d2fe [2020-10-28 09:19:00,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:19:00,111 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:19:00,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:19:00,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:19:00,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:19:00,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:19:00" (1/1) ... [2020-10-28 09:19:00,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@503ff7b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:00, skipping insertion in model container [2020-10-28 09:19:00,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:19:00" (1/1) ... [2020-10-28 09:19:00,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:19:00,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:19:00,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:19:00,351 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:19:00,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:19:00,400 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:19:00,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:00 WrapperNode [2020-10-28 09:19:00,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:19:00,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:19:00,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:19:00,403 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:19:00,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:00" (1/1) ... [2020-10-28 09:19:00,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:00" (1/1) ... [2020-10-28 09:19:00,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:00" (1/1) ... [2020-10-28 09:19:00,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:00" (1/1) ... [2020-10-28 09:19:00,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:00" (1/1) ... [2020-10-28 09:19:00,449 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:00" (1/1) ... [2020-10-28 09:19:00,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:00" (1/1) ... [2020-10-28 09:19:00,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:19:00,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:19:00,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:19:00,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:19:00,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:00" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:19:00,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:19:00,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:19:00,559 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:19:00,559 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 09:19:00,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 09:19:00,559 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:19:00,560 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:19:00,560 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:19:00,560 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:19:00,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:19:00,560 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 09:19:00,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 09:19:00,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 09:19:00,561 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 09:19:00,561 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:19:00,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 09:19:00,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:19:00,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:19:00,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:19:00,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:19:00,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:19:00,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:19:01,237 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:19:01,237 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-28 09:19:01,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:19:01 BoogieIcfgContainer [2020-10-28 09:19:01,241 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:19:01,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:19:01,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:19:01,248 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:19:01,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:19:00" (1/3) ... [2020-10-28 09:19:01,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d44ea04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:19:01, skipping insertion in model container [2020-10-28 09:19:01,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:00" (2/3) ... [2020-10-28 09:19:01,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d44ea04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:19:01, skipping insertion in model container [2020-10-28 09:19:01,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:19:01" (3/3) ... [2020-10-28 09:19:01,254 INFO L111 eAbstractionObserver]: Analyzing ICFG s5if.c [2020-10-28 09:19:01,268 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:19:01,273 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:19:01,288 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:19:01,336 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:19:01,336 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:19:01,336 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:19:01,336 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:19:01,336 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:19:01,337 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:19:01,337 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:19:01,337 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:19:01,359 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-28 09:19:01,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 09:19:01,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:19:01,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:19:01,366 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:19:01,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:19:01,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1361575079, now seen corresponding path program 1 times [2020-10-28 09:19:01,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:19:01,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569594036] [2020-10-28 09:19:01,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:19:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:19:01,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:19:01,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:19:01,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:19:02,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:19:02,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 09:19:02,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:19:02,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 519 [2020-10-28 09:19:02,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:19:02,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:19:02,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:19:02,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 09:19:02,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:19:02,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 09:19:02,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:19:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:19:02,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:19:02,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:19:02,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:19:02,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:19:02,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 09:19:02,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:19:02,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:19:02,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:19:02,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:19:02,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:19:02,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:19:02,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 09:19:02,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:19:02,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:19:02,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:19:02,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:19:02,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:19:02,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:19:02,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:19:02,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:19:02,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:19:02,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 09:19:02,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:19:02,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:19:02,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:19:02,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569594036] [2020-10-28 09:19:02,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:19:02,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 09:19:02,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112464554] [2020-10-28 09:19:02,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 09:19:02,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:19:02,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 09:19:02,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:19:02,263 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-10-28 09:19:02,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:19:02,414 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2020-10-28 09:19:02,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 09:19:02,417 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-28 09:19:02,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:19:02,425 INFO L225 Difference]: With dead ends: 59 [2020-10-28 09:19:02,426 INFO L226 Difference]: Without dead ends: 26 [2020-10-28 09:19:02,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:19:02,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-28 09:19:02,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-28 09:19:02,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-28 09:19:02,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-10-28 09:19:02,474 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 22 [2020-10-28 09:19:02,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:19:02,475 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-10-28 09:19:02,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 09:19:02,475 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-10-28 09:19:02,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 09:19:02,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:19:02,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:19:02,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:19:02,477 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:19:02,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:19:02,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1173980304, now seen corresponding path program 1 times [2020-10-28 09:19:02,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:19:02,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890220003] [2020-10-28 09:19:02,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:19:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:19:02,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:19:02,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:19:02,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:19:02,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 09:19:02,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:19:02,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-28 09:19:02,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:19:02,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:19:02,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:19:02,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:19:02,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 09:19:02,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:19:02,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:19:02,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:19:02,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:19:02,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:19:02,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:19:02,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:19:02,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 09:19:02,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:19:02,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:19:02,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:19:02,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:19:02,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:19:02,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:19:02,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 09:19:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:19:02,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:19:02,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:19:02,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:19:02,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:19:02,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 09:19:02,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:19:02,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:19:02,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:19:02,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:19:02,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:19:02,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:19:02,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:19:02,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890220003] [2020-10-28 09:19:02,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:19:02,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 09:19:02,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556611887] [2020-10-28 09:19:02,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:19:02,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:19:02,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:19:02,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:19:02,904 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 5 states. [2020-10-28 09:19:03,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:19:03,065 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-10-28 09:19:03,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:19:03,066 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-28 09:19:03,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:19:03,067 INFO L225 Difference]: With dead ends: 39 [2020-10-28 09:19:03,067 INFO L226 Difference]: Without dead ends: 28 [2020-10-28 09:19:03,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:19:03,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-28 09:19:03,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-28 09:19:03,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-28 09:19:03,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-10-28 09:19:03,078 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 22 [2020-10-28 09:19:03,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:19:03,079 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-10-28 09:19:03,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:19:03,079 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-10-28 09:19:03,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 09:19:03,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:19:03,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:19:03,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 09:19:03,081 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:19:03,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:19:03,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1619095335, now seen corresponding path program 1 times [2020-10-28 09:19:03,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:19:03,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74028369] [2020-10-28 09:19:03,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:19:03,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:19:03,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:19:03,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:19:03,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:19:04,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:19:04,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 09:19:04,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:19:04,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1745 [2020-10-28 09:19:04,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:19:04,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:19:04,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 09:19:04,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 09:19:04,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 09:19:04,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:19:05,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:19:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:19:05,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:19:05,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:19:05,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:19:05,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:19:05,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 09:19:05,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:19:05,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:19:05,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:19:05,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:19:05,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:19:05,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:19:05,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 09:19:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:19:05,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:19:05,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:19:05,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:19:05,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:19:05,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:19:05,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:19:05,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:19:05,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:19:05,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:19:05,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:19:05,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:19:05,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:19:05,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74028369] [2020-10-28 09:19:05,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:19:05,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 09:19:05,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602465468] [2020-10-28 09:19:05,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 09:19:05,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:19:05,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 09:19:05,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:19:05,191 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 12 states. [2020-10-28 09:19:05,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:19:05,944 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2020-10-28 09:19:05,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 09:19:05,944 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-10-28 09:19:05,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:19:05,948 INFO L225 Difference]: With dead ends: 52 [2020-10-28 09:19:05,948 INFO L226 Difference]: Without dead ends: 45 [2020-10-28 09:19:05,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2020-10-28 09:19:05,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-28 09:19:05,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2020-10-28 09:19:05,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-28 09:19:05,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-10-28 09:19:05,959 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 27 [2020-10-28 09:19:05,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:19:05,960 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-10-28 09:19:05,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 09:19:05,960 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-10-28 09:19:05,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 09:19:05,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:19:05,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:19:05,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 09:19:05,962 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:19:05,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:19:05,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1995813591, now seen corresponding path program 1 times [2020-10-28 09:19:05,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:19:05,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769906949] [2020-10-28 09:19:05,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:19:05,981 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-28 09:19:05,983 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-28 09:19:05,983 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 09:19:05,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 09:19:06,014 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-28 09:19:06,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:19:06 BoogieIcfgContainer [2020-10-28 09:19:06,015 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 09:19:06,018 INFO L168 Benchmark]: Toolchain (without parser) took 5912.43 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 138.6 MB in the beginning and 157.5 MB in the end (delta: -19.0 MB). Peak memory consumption was 15.1 MB. Max. memory is 8.0 GB. [2020-10-28 09:19:06,019 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 125.8 MB. Free memory was 105.7 MB in the beginning and 105.6 MB in the end (delta: 131.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 09:19:06,020 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.13 ms. Allocated memory is still 162.5 MB. Free memory was 137.8 MB in the beginning and 128.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-28 09:19:06,021 INFO L168 Benchmark]: Boogie Preprocessor took 51.58 ms. Allocated memory is still 162.5 MB. Free memory was 128.1 MB in the beginning and 126.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 09:19:06,022 INFO L168 Benchmark]: RCFGBuilder took 785.54 ms. Allocated memory is still 162.5 MB. Free memory was 126.3 MB in the beginning and 137.8 MB in the end (delta: -11.5 MB). Peak memory consumption was 10.8 MB. Max. memory is 8.0 GB. [2020-10-28 09:19:06,023 INFO L168 Benchmark]: TraceAbstraction took 4771.07 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 137.3 MB in the beginning and 157.5 MB in the end (delta: -20.2 MB). Peak memory consumption was 13.7 MB. Max. memory is 8.0 GB. [2020-10-28 09:19:06,027 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 125.8 MB. Free memory was 105.7 MB in the beginning and 105.6 MB in the end (delta: 131.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 288.13 ms. Allocated memory is still 162.5 MB. Free memory was 137.8 MB in the beginning and 128.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 51.58 ms. Allocated memory is still 162.5 MB. Free memory was 128.1 MB in the beginning and 126.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 785.54 ms. Allocated memory is still 162.5 MB. Free memory was 126.3 MB in the beginning and 137.8 MB in the end (delta: -11.5 MB). Peak memory consumption was 10.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4771.07 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 137.3 MB in the beginning and 157.5 MB in the end (delta: -20.2 MB). Peak memory consumption was 13.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 0 [L32] i=0 [L32] COND TRUE i