/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/brs1f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:10:31,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:10:31,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:10:31,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:10:31,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:10:31,643 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:10:31,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:10:31,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:10:31,653 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:10:31,659 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:10:31,660 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:10:31,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:10:31,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:10:31,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:10:31,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:10:31,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:10:31,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:10:31,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:10:31,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:10:31,689 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:10:31,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:10:31,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:10:31,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:10:31,696 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:10:31,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:10:31,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:10:31,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:10:31,708 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:10:31,708 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:10:31,709 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 09:10:31,709 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 09:10:31,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 09:10:31,712 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 09:10:31,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 09:10:31,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 09:10:31,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 09:10:31,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 09:10:31,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 09:10:31,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:10:31,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:10:31,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:10:31,725 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 09:10:31,781 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:10:31,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:10:31,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:10:31,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:10:31,786 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:10:31,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:10:31,786 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:10:31,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:10:31,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:10:31,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:10:31,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:10:31,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:10:31,789 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:10:31,789 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:10:31,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:10:31,789 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:10:31,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:10:31,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:10:31,790 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:10:31,790 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:10:31,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:10:31,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:10:31,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:10:31,791 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:10:31,791 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:10:31,791 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:10:31,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:10:31,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:10:31,791 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:10:31,792 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:10:32,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:10:32,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:10:32,212 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:10:32,214 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:10:32,215 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:10:32,217 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs1f.c [2020-10-28 09:10:32,302 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7857357da/6c7f58fd166e471e988cb7b38066d342/FLAG7baecc354 [2020-10-28 09:10:32,990 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:10:32,990 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/brs1f.c [2020-10-28 09:10:33,001 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7857357da/6c7f58fd166e471e988cb7b38066d342/FLAG7baecc354 [2020-10-28 09:10:33,349 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7857357da/6c7f58fd166e471e988cb7b38066d342 [2020-10-28 09:10:33,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:10:33,364 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:10:33,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:10:33,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:10:33,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:10:33,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:10:33" (1/1) ... [2020-10-28 09:10:33,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10d7d9d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:10:33, skipping insertion in model container [2020-10-28 09:10:33,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:10:33" (1/1) ... [2020-10-28 09:10:33,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:10:33,414 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:10:33,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:10:33,664 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:10:33,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:10:33,712 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:10:33,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:10:33 WrapperNode [2020-10-28 09:10:33,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:10:33,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:10:33,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:10:33,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:10:33,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:10:33" (1/1) ... [2020-10-28 09:10:33,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:10:33" (1/1) ... [2020-10-28 09:10:33,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:10:33" (1/1) ... [2020-10-28 09:10:33,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:10:33" (1/1) ... [2020-10-28 09:10:33,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:10:33" (1/1) ... [2020-10-28 09:10:33,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:10:33" (1/1) ... [2020-10-28 09:10:33,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:10:33" (1/1) ... [2020-10-28 09:10:33,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:10:33,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:10:33,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:10:33,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:10:33,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:10:33" (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 09:10:33,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:10:33,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:10:33,872 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:10:33,873 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 09:10:33,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 09:10:33,874 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:10:33,874 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:10:33,874 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:10:33,875 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:10:33,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:10:33,876 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 09:10:33,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 09:10:33,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 09:10:33,876 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 09:10:33,877 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:10:33,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 09:10:33,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:10:33,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:10:33,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:10:33,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:10:33,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:10:33,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:10:34,314 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:10:34,314 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-28 09:10:34,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:10:34 BoogieIcfgContainer [2020-10-28 09:10:34,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:10:34,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:10:34,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:10:34,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:10:34,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:10:33" (1/3) ... [2020-10-28 09:10:34,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@763b40b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:10:34, skipping insertion in model container [2020-10-28 09:10:34,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:10:33" (2/3) ... [2020-10-28 09:10:34,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@763b40b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:10:34, skipping insertion in model container [2020-10-28 09:10:34,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:10:34" (3/3) ... [2020-10-28 09:10:34,326 INFO L111 eAbstractionObserver]: Analyzing ICFG brs1f.c [2020-10-28 09:10:34,340 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:10:34,345 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:10:34,359 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:10:34,387 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:10:34,387 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:10:34,387 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:10:34,387 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:10:34,387 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:10:34,388 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:10:34,388 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:10:34,388 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:10:34,406 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-28 09:10:34,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 09:10:34,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:10:34,413 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 09:10:34,413 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:10:34,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:10:34,420 INFO L82 PathProgramCache]: Analyzing trace with hash 288317380, now seen corresponding path program 1 times [2020-10-28 09:10:34,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:10:34,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858191161] [2020-10-28 09:10:34,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:10:34,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:34,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:34,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:34,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:35,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:35,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 09:10:35,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:10:35,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-10-28 09:10:35,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:35,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:35,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:35,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 09:10:35,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:35,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 09:10:35,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:10:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:35,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:35,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:35,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:10:35,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:35,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 09:10:35,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:35,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:35,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:35,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:10:35,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:35,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:10:35,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 09:10:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:35,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:35,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:35,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:35,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:35,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:10:35,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:10:35,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:35,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:35,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:35,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:10:35,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:35,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:10:35,170 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 09:10:35,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858191161] [2020-10-28 09:10:35,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:10:35,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 09:10:35,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035243575] [2020-10-28 09:10:35,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 09:10:35,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:10:35,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 09:10:35,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:10:35,203 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-10-28 09:10:35,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:10:35,349 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2020-10-28 09:10:35,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 09:10:35,351 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-28 09:10:35,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:10:35,364 INFO L225 Difference]: With dead ends: 61 [2020-10-28 09:10:35,366 INFO L226 Difference]: Without dead ends: 27 [2020-10-28 09:10:35,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 09:10:35,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-28 09:10:35,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-28 09:10:35,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-28 09:10:35,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-10-28 09:10:35,436 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 22 [2020-10-28 09:10:35,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:10:35,436 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-10-28 09:10:35,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 09:10:35,437 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-10-28 09:10:35,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 09:10:35,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:10:35,443 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 09:10:35,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:10:35,445 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:10:35,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:10:35,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1231035376, now seen corresponding path program 1 times [2020-10-28 09:10:35,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:10:35,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432511449] [2020-10-28 09:10:35,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:10:35,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:35,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:35,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:35,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:35,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 09:10:35,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:10:35,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-28 09:10:35,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:35,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:35,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:10:35,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:10:35,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 09:10:35,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 09:10:35,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:10:35,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:35,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:36,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:36,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:10:36,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:36,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 09:10:36,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:36,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:36,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:36,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:10:36,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:36,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:36,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 09:10:36,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:36,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:36,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:36,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:36,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:36,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 09:10:36,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:36,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:36,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:10:36,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:10:36,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:10:36,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:36,034 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 09:10:36,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432511449] [2020-10-28 09:10:36,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:10:36,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 09:10:36,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192572410] [2020-10-28 09:10:36,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:10:36,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:10:36,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:10:36,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:10:36,042 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 5 states. [2020-10-28 09:10:36,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:10:36,263 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2020-10-28 09:10:36,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:10:36,263 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-28 09:10:36,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:10:36,265 INFO L225 Difference]: With dead ends: 40 [2020-10-28 09:10:36,265 INFO L226 Difference]: Without dead ends: 29 [2020-10-28 09:10:36,266 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 09:10:36,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-28 09:10:36,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-28 09:10:36,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-28 09:10:36,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-10-28 09:10:36,274 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2020-10-28 09:10:36,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:10:36,275 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-10-28 09:10:36,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:10:36,275 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-10-28 09:10:36,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-28 09:10:36,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:10:36,276 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, 1] [2020-10-28 09:10:36,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 09:10:36,277 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:10:36,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:10:36,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1214934215, now seen corresponding path program 1 times [2020-10-28 09:10:36,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:10:36,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226852381] [2020-10-28 09:10:36,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:10:36,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:36,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:36,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:36,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:37,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:37,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 09:10:37,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:10:37,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 748 [2020-10-28 09:10:37,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:37,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:37,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:10:37,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 09:10:37,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 09:10:37,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:37,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:10:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:37,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:37,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:37,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:10:37,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:37,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:10:37,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:37,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:37,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:37,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:10:37,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:37,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:37,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 09:10:37,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:37,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:37,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:37,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:37,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:37,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:10:37,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:37,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:37,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:37,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:10:37,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:37,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:37,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 09:10:37,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226852381] [2020-10-28 09:10:37,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:10:37,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:10:37,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012557145] [2020-10-28 09:10:37,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:10:37,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:10:37,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:10:37,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:10:37,119 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 4 states. [2020-10-28 09:10:37,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:10:37,215 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2020-10-28 09:10:37,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:10:37,216 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-28 09:10:37,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:10:37,217 INFO L225 Difference]: With dead ends: 43 [2020-10-28 09:10:37,217 INFO L226 Difference]: Without dead ends: 33 [2020-10-28 09:10:37,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:10:37,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-28 09:10:37,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2020-10-28 09:10:37,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-28 09:10:37,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-10-28 09:10:37,225 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 28 [2020-10-28 09:10:37,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:10:37,225 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-10-28 09:10:37,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:10:37,226 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-10-28 09:10:37,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-28 09:10:37,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:10:37,227 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, 1] [2020-10-28 09:10:37,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 09:10:37,227 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:10:37,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:10:37,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1894992585, now seen corresponding path program 1 times [2020-10-28 09:10:37,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:10:37,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905263595] [2020-10-28 09:10:37,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:10:37,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 09:10:37,255 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 09:10:37,255 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 09:10:37,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 09:10:37,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:10:37 BoogieIcfgContainer [2020-10-28 09:10:37,280 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 09:10:37,284 INFO L168 Benchmark]: Toolchain (without parser) took 3923.94 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 128.0 MB in the beginning and 81.5 MB in the end (delta: 46.5 MB). Peak memory consumption was 77.5 MB. Max. memory is 8.0 GB. [2020-10-28 09:10:37,286 INFO L168 Benchmark]: CDTParser took 0.64 ms. Allocated memory is still 125.8 MB. Free memory was 101.5 MB in the beginning and 101.4 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 09:10:37,288 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.51 ms. Allocated memory is still 151.0 MB. Free memory was 127.4 MB in the beginning and 117.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-28 09:10:37,289 INFO L168 Benchmark]: Boogie Preprocessor took 49.03 ms. Allocated memory is still 151.0 MB. Free memory was 117.4 MB in the beginning and 115.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 09:10:37,291 INFO L168 Benchmark]: RCFGBuilder took 552.03 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 132.3 MB in the end (delta: -16.5 MB). Peak memory consumption was 17.4 MB. Max. memory is 8.0 GB. [2020-10-28 09:10:37,294 INFO L168 Benchmark]: TraceAbstraction took 2961.79 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 131.7 MB in the beginning and 81.5 MB in the end (delta: 50.2 MB). Peak memory consumption was 80.0 MB. Max. memory is 8.0 GB. [2020-10-28 09:10:37,306 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.64 ms. Allocated memory is still 125.8 MB. Free memory was 101.5 MB in the beginning and 101.4 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 344.51 ms. Allocated memory is still 151.0 MB. Free memory was 127.4 MB in the beginning and 117.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 49.03 ms. Allocated memory is still 151.0 MB. Free memory was 117.4 MB in the beginning and 115.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 552.03 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 132.3 MB in the end (delta: -16.5 MB). Peak memory consumption was 17.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2961.79 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 131.7 MB in the beginning and 81.5 MB in the end (delta: 50.2 MB). Peak memory consumption was 80.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a 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] i=0 [L31] COND TRUE i