/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/res2of.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:49:24,098 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:49:24,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:49:24,144 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:49:24,145 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:49:24,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:49:24,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:49:24,159 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:49:24,162 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:49:24,165 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:49:24,166 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:49:24,167 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:49:24,167 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:49:24,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:49:24,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:49:24,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:49:24,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:49:24,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:49:24,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:49:24,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:49:24,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:49:24,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:49:24,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:49:24,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:49:24,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:49:24,204 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:49:24,204 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:49:24,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:49:24,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:49:24,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:49:24,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:49:24,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:49:24,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:49:24,213 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:49:24,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:49:24,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:49:24,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:49:24,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:49:24,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:49:24,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:49:24,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:49:24,220 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 [2020-09-24 21:49:24,263 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:49:24,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:49:24,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:49:24,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:49:24,265 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:49:24,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:49:24,266 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:49:24,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:49:24,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:49:24,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:49:24,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:49:24,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:49:24,268 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:49:24,269 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:49:24,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:49:24,269 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:49:24,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:49:24,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:49:24,270 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:49:24,270 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:49:24,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:49:24,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:49:24,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:49:24,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:49:24,271 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:49:24,271 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:49:24,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:49:24,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:49:24,272 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:49:24,272 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:49:24,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:49:24,758 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:49:24,762 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:49:24,764 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:49:24,764 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:49:24,765 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res2of.c [2020-09-24 21:49:24,843 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/73ad1750c/d9f1d5a5f05646579d62a71c702c1d2c/FLAGb9377c65a [2020-09-24 21:49:25,346 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:49:25,347 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/res2of.c [2020-09-24 21:49:25,358 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/73ad1750c/d9f1d5a5f05646579d62a71c702c1d2c/FLAGb9377c65a [2020-09-24 21:49:25,667 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/73ad1750c/d9f1d5a5f05646579d62a71c702c1d2c [2020-09-24 21:49:25,682 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:49:25,690 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:49:25,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:49:25,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:49:25,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:49:25,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:49:25" (1/1) ... [2020-09-24 21:49:25,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fc4fd3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:25, skipping insertion in model container [2020-09-24 21:49:25,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:49:25" (1/1) ... [2020-09-24 21:49:25,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:49:25,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:49:26,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:49:26,041 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:49:26,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:49:26,171 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:49:26,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:26 WrapperNode [2020-09-24 21:49:26,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:49:26,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:49:26,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:49:26,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:49:26,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:26" (1/1) ... [2020-09-24 21:49:26,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:26" (1/1) ... [2020-09-24 21:49:26,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:26" (1/1) ... [2020-09-24 21:49:26,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:26" (1/1) ... [2020-09-24 21:49:26,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:26" (1/1) ... [2020-09-24 21:49:26,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:26" (1/1) ... [2020-09-24 21:49:26,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:26" (1/1) ... [2020-09-24 21:49:26,221 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:49:26,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:49:26,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:49:26,222 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:49:26,223 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:26" (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 [2020-09-24 21:49:26,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:49:26,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:49:26,305 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 21:49:26,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 21:49:26,306 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:49:26,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:49:26,307 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 21:49:26,307 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 21:49:26,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 21:49:26,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:49:26,308 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 21:49:26,308 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:49:26,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 21:49:26,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 21:49:26,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 21:49:26,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 21:49:26,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:49:26,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:49:26,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:49:26,723 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:49:26,724 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-24 21:49:26,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:49:26 BoogieIcfgContainer [2020-09-24 21:49:26,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:49:26,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:49:26,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:49:26,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:49:26,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:49:25" (1/3) ... [2020-09-24 21:49:26,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b76525e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:49:26, skipping insertion in model container [2020-09-24 21:49:26,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:49:26" (2/3) ... [2020-09-24 21:49:26,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b76525e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:49:26, skipping insertion in model container [2020-09-24 21:49:26,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:49:26" (3/3) ... [2020-09-24 21:49:26,739 INFO L109 eAbstractionObserver]: Analyzing ICFG res2of.c [2020-09-24 21:49:26,750 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:49:26,764 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:49:26,786 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:49:26,815 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:49:26,815 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:49:26,815 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:49:26,815 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:49:26,815 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:49:26,815 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:49:26,815 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:49:26,816 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:49:26,836 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2020-09-24 21:49:26,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 21:49:26,844 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:49:26,845 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:49:26,846 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:49:26,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:49:26,852 INFO L82 PathProgramCache]: Analyzing trace with hash -386797637, now seen corresponding path program 1 times [2020-09-24 21:49:26,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:49:26,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820071110] [2020-09-24 21:49:26,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:49:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:27,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:27,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:27,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:27,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:27,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:28,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:28,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:29,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:29,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 21:49:29,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:49:29,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2447 [2020-09-24 21:49:29,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:29,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:49:29,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:49:29,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 21:49:29,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:49:29,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:49:29,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:29,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:29,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:29,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:49:29,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:29,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:49:29,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:29,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:29,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:49:29,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:29,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:49:29,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 21:49:29,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:29,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:29,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:29,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:49:29,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:29,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 21:49:29,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:29,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:49:29,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:49:29,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:49:29,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:29,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:49:29,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820071110] [2020-09-24 21:49:29,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:49:29,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 21:49:29,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946257460] [2020-09-24 21:49:29,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:49:29,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:49:29,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:49:29,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:49:29,740 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 8 states. [2020-09-24 21:49:30,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:49:30,254 INFO L93 Difference]: Finished difference Result 204 states and 244 transitions. [2020-09-24 21:49:30,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 21:49:30,256 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-09-24 21:49:30,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:49:30,269 INFO L225 Difference]: With dead ends: 204 [2020-09-24 21:49:30,269 INFO L226 Difference]: Without dead ends: 103 [2020-09-24 21:49:30,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:49:30,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-09-24 21:49:30,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 91. [2020-09-24 21:49:30,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-24 21:49:30,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 101 transitions. [2020-09-24 21:49:30,333 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 101 transitions. Word has length 43 [2020-09-24 21:49:30,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:49:30,334 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 101 transitions. [2020-09-24 21:49:30,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:49:30,334 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 101 transitions. [2020-09-24 21:49:30,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 21:49:30,337 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:49:30,337 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:49:30,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:49:30,338 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:49:30,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:49:30,338 INFO L82 PathProgramCache]: Analyzing trace with hash 73707488, now seen corresponding path program 1 times [2020-09-24 21:49:30,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:49:30,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375011559] [2020-09-24 21:49:30,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:49:30,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:30,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:30,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:30,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:30,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:30,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:30,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:31,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:31,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:31,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:31,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:32,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:32,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:35,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:35,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 21:49:35,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-24 21:49:35,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 21:49:35,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:35,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:49:35,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:49:35,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 21:49:35,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:49:35,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:49:35,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:35,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:35,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:35,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:49:35,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:35,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:49:35,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:35,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:35,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:49:35,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:35,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:35,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 21:49:35,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:35,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:35,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:35,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:49:35,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:35,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:49:35,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:35,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:49:35,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:49:35,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:49:35,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:35,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:49:35,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375011559] [2020-09-24 21:49:35,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:49:35,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:49:35,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625657715] [2020-09-24 21:49:35,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:49:35,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:49:35,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:49:35,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:49:35,550 INFO L87 Difference]: Start difference. First operand 91 states and 101 transitions. Second operand 9 states. [2020-09-24 21:49:35,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:49:35,969 INFO L93 Difference]: Finished difference Result 123 states and 135 transitions. [2020-09-24 21:49:35,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 21:49:35,970 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2020-09-24 21:49:35,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:49:35,972 INFO L225 Difference]: With dead ends: 123 [2020-09-24 21:49:35,972 INFO L226 Difference]: Without dead ends: 117 [2020-09-24 21:49:35,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:49:35,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-09-24 21:49:35,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 85. [2020-09-24 21:49:35,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-24 21:49:35,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 92 transitions. [2020-09-24 21:49:35,985 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 92 transitions. Word has length 48 [2020-09-24 21:49:35,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:49:35,985 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 92 transitions. [2020-09-24 21:49:35,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:49:35,985 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 92 transitions. [2020-09-24 21:49:35,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 21:49:35,987 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:49:35,987 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:49:35,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:49:35,988 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:49:35,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:49:35,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1495217621, now seen corresponding path program 1 times [2020-09-24 21:49:35,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:49:35,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630694184] [2020-09-24 21:49:35,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:49:36,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:36,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:36,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:36,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:36,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:36,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:36,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:36,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:36,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:36,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:37,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:41,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:41,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 21:49:41,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 21:49:41,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 21:49:41,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:41,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:49:41,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:49:41,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 21:49:41,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:41,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:49:41,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:41,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:41,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:41,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:49:41,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:41,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:49:41,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:41,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:41,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:49:41,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:41,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:41,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 21:49:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:41,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:41,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:41,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:49:41,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:41,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 21:49:41,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:41,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:49:41,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:49:41,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:49:41,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 21:49:41,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:49:41,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630694184] [2020-09-24 21:49:41,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:49:41,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:49:41,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644419153] [2020-09-24 21:49:41,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:49:41,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:49:41,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:49:41,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:49:41,106 INFO L87 Difference]: Start difference. First operand 85 states and 92 transitions. Second operand 5 states. [2020-09-24 21:49:41,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:49:41,330 INFO L93 Difference]: Finished difference Result 139 states and 156 transitions. [2020-09-24 21:49:41,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:49:41,330 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-09-24 21:49:41,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:49:41,332 INFO L225 Difference]: With dead ends: 139 [2020-09-24 21:49:41,337 INFO L226 Difference]: Without dead ends: 86 [2020-09-24 21:49:41,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:49:41,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-24 21:49:41,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-09-24 21:49:41,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-24 21:49:41,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2020-09-24 21:49:41,356 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 52 [2020-09-24 21:49:41,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:49:41,357 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2020-09-24 21:49:41,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:49:41,357 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2020-09-24 21:49:41,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-24 21:49:41,367 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:49:41,367 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, 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, 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, 1] [2020-09-24 21:49:41,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:49:41,368 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:49:41,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:49:41,370 INFO L82 PathProgramCache]: Analyzing trace with hash -849907375, now seen corresponding path program 1 times [2020-09-24 21:49:41,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:49:41,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027430775] [2020-09-24 21:49:41,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:49:41,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 21:49:41,410 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 21:49:41,410 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 21:49:41,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:49:41,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:49:41 BoogieIcfgContainer [2020-09-24 21:49:41,442 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 21:49:41,446 INFO L168 Benchmark]: Toolchain (without parser) took 15760.16 ms. Allocated memory was 138.4 MB in the beginning and 331.9 MB in the end (delta: 193.5 MB). Free memory was 100.2 MB in the beginning and 242.4 MB in the end (delta: -142.2 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. [2020-09-24 21:49:41,447 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 118.7 MB in the beginning and 118.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 21:49:41,448 INFO L168 Benchmark]: CACSL2BoogieTranslator took 477.65 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 99.6 MB in the beginning and 180.3 MB in the end (delta: -80.7 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-09-24 21:49:41,449 INFO L168 Benchmark]: Boogie Preprocessor took 48.47 ms. Allocated memory is still 201.3 MB. Free memory was 180.3 MB in the beginning and 177.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-09-24 21:49:41,450 INFO L168 Benchmark]: RCFGBuilder took 508.65 ms. Allocated memory is still 201.3 MB. Free memory was 177.9 MB in the beginning and 153.7 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-09-24 21:49:41,451 INFO L168 Benchmark]: TraceAbstraction took 14710.82 ms. Allocated memory was 201.3 MB in the beginning and 331.9 MB in the end (delta: 130.5 MB). Free memory was 153.0 MB in the beginning and 242.4 MB in the end (delta: -89.4 MB). Peak memory consumption was 41.2 MB. Max. memory is 7.1 GB. [2020-09-24 21:49:41,455 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 118.7 MB in the beginning and 118.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 477.65 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 99.6 MB in the beginning and 180.3 MB in the end (delta: -80.7 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 48.47 ms. Allocated memory is still 201.3 MB. Free memory was 180.3 MB in the beginning and 177.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 508.65 ms. Allocated memory is still 201.3 MB. Free memory was 177.9 MB in the beginning and 153.7 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14710.82 ms. Allocated memory was 201.3 MB in the beginning and 331.9 MB in the end (delta: 130.5 MB). Free memory was 153.0 MB in the beginning and 242.4 MB in the end (delta: -89.4 MB). Peak memory consumption was 41.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L28] int *b = malloc(sizeof(int)*N); [L29] int *c = malloc(sizeof(int)*N); [L31] sum[0] = 0 [L32] i=0 [L32] COND TRUE i