/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/s3iff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:18:01,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:18:01,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:18:01,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:18:01,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:18:01,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:18:01,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:18:01,244 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:18:01,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:18:01,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:18:01,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:18:01,260 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:18:01,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:18:01,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:18:01,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:18:01,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:18:01,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:18:01,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:18:01,287 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:18:01,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:18:01,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:18:01,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:18:01,304 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:18:01,305 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:18:01,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:18:01,327 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:18:01,328 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:18:01,331 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:18:01,331 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:18:01,333 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 09:18:01,333 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 09:18:01,334 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 09:18:01,337 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 09:18:01,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 09:18:01,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 09:18:01,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 09:18:01,341 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 09:18:01,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 09:18:01,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:18:01,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:18:01,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:18:01,352 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 09:18:01,401 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:18:01,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:18:01,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:18:01,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:18:01,406 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:18:01,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:18:01,407 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:18:01,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:18:01,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:18:01,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:18:01,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:18:01,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:18:01,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:18:01,409 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:18:01,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:18:01,410 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:18:01,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:18:01,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:18:01,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:18:01,411 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:18:01,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:18:01,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:18:01,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:18:01,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:18:01,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:18:01,412 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:18:01,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:18:01,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:18:01,413 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:18:01,413 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:18:01,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:18:01,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:18:01,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:18:01,956 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:18:01,957 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:18:01,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s3iff.c [2020-10-28 09:18:02,071 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be30841ce/e717f0de3d8f47599daa46324eab7a99/FLAG13a509f6b [2020-10-28 09:18:02,884 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:18:02,885 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s3iff.c [2020-10-28 09:18:02,898 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be30841ce/e717f0de3d8f47599daa46324eab7a99/FLAG13a509f6b [2020-10-28 09:18:03,195 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be30841ce/e717f0de3d8f47599daa46324eab7a99 [2020-10-28 09:18:03,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:18:03,206 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:18:03,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:18:03,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:18:03,213 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:18:03,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:18:03" (1/1) ... [2020-10-28 09:18:03,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29916ae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:03, skipping insertion in model container [2020-10-28 09:18:03,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:18:03" (1/1) ... [2020-10-28 09:18:03,228 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:18:03,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:18:03,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:18:03,458 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:18:03,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:18:03,502 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:18:03,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:03 WrapperNode [2020-10-28 09:18:03,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:18:03,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:18:03,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:18:03,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:18:03,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:03" (1/1) ... [2020-10-28 09:18:03,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:03" (1/1) ... [2020-10-28 09:18:03,528 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:03" (1/1) ... [2020-10-28 09:18:03,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:03" (1/1) ... [2020-10-28 09:18:03,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:03" (1/1) ... [2020-10-28 09:18:03,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:03" (1/1) ... [2020-10-28 09:18:03,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:03" (1/1) ... [2020-10-28 09:18:03,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:18:03,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:18:03,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:18:03,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:18:03,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:03" (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 09:18:03,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:18:03,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:18:03,650 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:18:03,650 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 09:18:03,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 09:18:03,651 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:18:03,651 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:18:03,651 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:18:03,651 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:18:03,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:18:03,652 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 09:18:03,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 09:18:03,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 09:18:03,652 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 09:18:03,652 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:18:03,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 09:18:03,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:18:03,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:18:03,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:18:03,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:18:03,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:18:03,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:18:04,358 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:18:04,359 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-28 09:18:04,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:18:04 BoogieIcfgContainer [2020-10-28 09:18:04,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:18:04,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:18:04,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:18:04,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:18:04,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:18:03" (1/3) ... [2020-10-28 09:18:04,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ae2704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:18:04, skipping insertion in model container [2020-10-28 09:18:04,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:03" (2/3) ... [2020-10-28 09:18:04,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ae2704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:18:04, skipping insertion in model container [2020-10-28 09:18:04,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:18:04" (3/3) ... [2020-10-28 09:18:04,379 INFO L111 eAbstractionObserver]: Analyzing ICFG s3iff.c [2020-10-28 09:18:04,395 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:18:04,401 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:18:04,417 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:18:04,469 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:18:04,469 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:18:04,469 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:18:04,470 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:18:04,470 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:18:04,470 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:18:04,470 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:18:04,470 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:18:04,491 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-28 09:18:04,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 09:18:04,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:18:04,501 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 09:18:04,502 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:18:04,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:18:04,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1361575079, now seen corresponding path program 1 times [2020-10-28 09:18:04,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:18:04,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861714655] [2020-10-28 09:18:04,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:18:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:18:04,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:04,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:04,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:05,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:18:05,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 09:18:05,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:18:05,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 581 [2020-10-28 09:18:05,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:18:05,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:18:05,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:18:05,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 09:18:05,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:18:05,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 09:18:05,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:18:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:18:05,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:05,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:18:05,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:18:05,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:18:05,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 09:18:05,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:18:05,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:18:05,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:18:05,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:18:05,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:18:05,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:18:05,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 09:18:05,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:18:05,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:05,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:18:05,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:18:05,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:18:05,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:18:05,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:18:05,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:18:05,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:18:05,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 09:18:05,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:18:05,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:18:05,493 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 09:18:05,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861714655] [2020-10-28 09:18:05,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:18:05,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 09:18:05,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225015675] [2020-10-28 09:18:05,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 09:18:05,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:18:05,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 09:18:05,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:18:05,529 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-10-28 09:18:05,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:18:05,670 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2020-10-28 09:18:05,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 09:18:05,672 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-28 09:18:05,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:18:05,683 INFO L225 Difference]: With dead ends: 59 [2020-10-28 09:18:05,683 INFO L226 Difference]: Without dead ends: 26 [2020-10-28 09:18:05,688 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 09:18:05,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-28 09:18:05,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-28 09:18:05,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-28 09:18:05,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-10-28 09:18:05,744 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 22 [2020-10-28 09:18:05,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:18:05,745 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-10-28 09:18:05,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 09:18:05,746 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-10-28 09:18:05,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 09:18:05,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:18:05,748 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 09:18:05,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:18:05,749 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:18:05,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:18:05,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1173980304, now seen corresponding path program 1 times [2020-10-28 09:18:05,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:18:05,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660435717] [2020-10-28 09:18:05,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:18:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:18:05,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:05,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:06,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:18:06,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 09:18:06,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:18:06,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-10-28 09:18:06,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:18:06,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:18:06,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:18:06,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:18:06,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 09:18:06,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:18:06,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:18:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:18:06,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:06,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:18:06,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:18:06,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:18:06,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 09:18:06,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:18:06,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:18:06,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:18:06,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:18:06,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:18:06,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:18:06,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 09:18:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:18:06,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:06,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:18:06,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:18:06,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:18:06,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 09:18:06,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:18:06,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:18:06,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:18:06,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:18:06,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:18:06,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:18:06,382 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 09:18:06,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660435717] [2020-10-28 09:18:06,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:18:06,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 09:18:06,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022262384] [2020-10-28 09:18:06,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:18:06,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:18:06,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:18:06,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:18:06,391 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 5 states. [2020-10-28 09:18:06,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:18:06,643 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-10-28 09:18:06,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:18:06,644 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-28 09:18:06,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:18:06,646 INFO L225 Difference]: With dead ends: 39 [2020-10-28 09:18:06,646 INFO L226 Difference]: Without dead ends: 28 [2020-10-28 09:18:06,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:18:06,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-28 09:18:06,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-28 09:18:06,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-28 09:18:06,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-10-28 09:18:06,671 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 22 [2020-10-28 09:18:06,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:18:06,672 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-10-28 09:18:06,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:18:06,672 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-10-28 09:18:06,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 09:18:06,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:18:06,677 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 09:18:06,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 09:18:06,677 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:18:06,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:18:06,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1619095335, now seen corresponding path program 1 times [2020-10-28 09:18:06,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:18:06,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381322261] [2020-10-28 09:18:06,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:18:06,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:18:06,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:06,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:07,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:08,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:18:08,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 09:18:08,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:18:08,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1819 [2020-10-28 09:18:08,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:18:08,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:18:08,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 09:18:08,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 09:18:08,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 09:18:08,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:18:08,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:18:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:18:08,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:08,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:18:08,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:18:08,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:18:08,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 09:18:08,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:18:08,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:18:08,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:18:08,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:18:08,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:18:08,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:18:08,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 09:18:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:18:08,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:08,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:18:08,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:18:08,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:18:08,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:18:08,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:18:08,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:18:08,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:18:08,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:18:08,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:18:08,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 24 [2020-10-28 09:18:08,923 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 09:18:08,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381322261] [2020-10-28 09:18:08,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:18:08,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 09:18:08,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352951192] [2020-10-28 09:18:08,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 09:18:08,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:18:08,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 09:18:08,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:18:08,934 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 12 states. [2020-10-28 09:18:09,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:18:09,548 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2020-10-28 09:18:09,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 09:18:09,549 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-10-28 09:18:09,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:18:09,552 INFO L225 Difference]: With dead ends: 43 [2020-10-28 09:18:09,552 INFO L226 Difference]: Without dead ends: 36 [2020-10-28 09:18:09,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:18:09,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-28 09:18:09,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-28 09:18:09,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-28 09:18:09,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-28 09:18:09,564 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 27 [2020-10-28 09:18:09,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:18:09,564 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-28 09:18:09,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 09:18:09,565 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-28 09:18:09,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 09:18:09,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:18:09,566 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 09:18:09,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 09:18:09,566 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:18:09,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:18:09,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1995813591, now seen corresponding path program 1 times [2020-10-28 09:18:09,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:18:09,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964840934] [2020-10-28 09:18:09,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:18:09,596 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-28 09:18:09,596 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-28 09:18:09,597 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 09:18:09,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 09:18:09,626 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-28 09:18:09,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:18:09 BoogieIcfgContainer [2020-10-28 09:18:09,627 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 09:18:09,632 INFO L168 Benchmark]: Toolchain (without parser) took 6427.65 ms. Allocated memory was 151.0 MB in the beginning and 182.5 MB in the end (delta: 31.5 MB). Free memory was 127.0 MB in the beginning and 94.7 MB in the end (delta: 32.4 MB). Peak memory consumption was 64.7 MB. Max. memory is 8.0 GB. [2020-10-28 09:18:09,634 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 124.3 MB in the end (delta: 101.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 09:18:09,636 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.56 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 116.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-28 09:18:09,638 INFO L168 Benchmark]: Boogie Preprocessor took 47.06 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 114.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-28 09:18:09,639 INFO L168 Benchmark]: RCFGBuilder took 809.52 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 132.9 MB in the end (delta: -18.0 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2020-10-28 09:18:09,643 INFO L168 Benchmark]: TraceAbstraction took 5259.58 ms. Allocated memory was 151.0 MB in the beginning and 182.5 MB in the end (delta: 31.5 MB). Free memory was 132.4 MB in the beginning and 94.7 MB in the end (delta: 37.7 MB). Peak memory consumption was 70.2 MB. Max. memory is 8.0 GB. [2020-10-28 09:18:09,657 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 124.3 MB in the end (delta: 101.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 295.56 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 116.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.06 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 114.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 809.52 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 132.9 MB in the end (delta: -18.0 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5259.58 ms. Allocated memory was 151.0 MB in the beginning and 182.5 MB in the end (delta: 31.5 MB). Free memory was 132.4 MB in the beginning and 94.7 MB in the end (delta: 37.7 MB). Peak memory consumption was 70.2 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] = 1 [L32] i=0 [L32] COND TRUE i