/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 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=NARROWEST --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 -i ../../../trunk/examples/svcomp/array-fpi/s12if.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 05:10:03,552 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 05:10:03,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 05:10:03,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 05:10:03,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 05:10:03,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 05:10:03,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 05:10:03,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 05:10:03,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 05:10:03,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 05:10:03,598 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 05:10:03,599 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 05:10:03,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 05:10:03,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 05:10:03,602 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 05:10:03,603 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 05:10:03,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 05:10:03,605 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 05:10:03,606 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 05:10:03,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 05:10:03,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 05:10:03,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 05:10:03,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 05:10:03,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 05:10:03,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 05:10:03,616 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 05:10:03,616 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 05:10:03,617 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 05:10:03,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 05:10:03,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 05:10:03,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 05:10:03,619 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 05:10:03,620 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 05:10:03,621 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 05:10:03,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 05:10:03,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 05:10:03,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 05:10:03,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 05:10:03,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 05:10:03,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 05:10:03,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 05:10:03,626 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 [2020-10-13 05:10:03,676 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 05:10:03,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 05:10:03,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 05:10:03,681 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 05:10:03,681 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 05:10:03,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 05:10:03,682 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 05:10:03,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 05:10:03,682 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 05:10:03,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 05:10:03,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 05:10:03,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 05:10:03,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 05:10:03,687 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 05:10:03,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 05:10:03,687 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 05:10:03,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 05:10:03,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 05:10:03,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 05:10:03,688 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 05:10:03,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 05:10:03,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 05:10:03,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 05:10:03,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 05:10:03,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 05:10:03,690 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 05:10:03,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 05:10:03,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 05:10:03,691 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 05:10:03,691 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 -> 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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 05:10:04,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 05:10:04,104 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 05:10:04,108 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 05:10:04,110 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 05:10:04,110 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 05:10:04,111 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s12if.c [2020-10-13 05:10:04,178 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ecb1aa235/046780fb16ba43baa901458f981f03f4/FLAG1ca7de087 [2020-10-13 05:10:04,712 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 05:10:04,713 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s12if.c [2020-10-13 05:10:04,722 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ecb1aa235/046780fb16ba43baa901458f981f03f4/FLAG1ca7de087 [2020-10-13 05:10:05,048 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ecb1aa235/046780fb16ba43baa901458f981f03f4 [2020-10-13 05:10:05,059 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 05:10:05,061 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 05:10:05,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 05:10:05,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 05:10:05,067 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 05:10:05,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:10:05" (1/1) ... [2020-10-13 05:10:05,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d022c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:05, skipping insertion in model container [2020-10-13 05:10:05,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:10:05" (1/1) ... [2020-10-13 05:10:05,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 05:10:05,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 05:10:05,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:10:05,333 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 05:10:05,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:10:05,380 INFO L208 MainTranslator]: Completed translation [2020-10-13 05:10:05,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:05 WrapperNode [2020-10-13 05:10:05,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 05:10:05,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 05:10:05,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 05:10:05,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 05:10:05,493 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:05" (1/1) ... [2020-10-13 05:10:05,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:05" (1/1) ... [2020-10-13 05:10:05,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:05" (1/1) ... [2020-10-13 05:10:05,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:05" (1/1) ... [2020-10-13 05:10:05,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:05" (1/1) ... [2020-10-13 05:10:05,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:05" (1/1) ... [2020-10-13 05:10:05,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:05" (1/1) ... [2020-10-13 05:10:05,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 05:10:05,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 05:10:05,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 05:10:05,530 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 05:10:05,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:05" (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 [2020-10-13 05:10:05,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 05:10:05,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 05:10:05,615 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 05:10:05,615 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 05:10:05,615 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 05:10:05,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 05:10:05,615 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 05:10:05,615 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 05:10:05,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 05:10:05,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 05:10:05,616 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 05:10:05,616 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 05:10:05,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 05:10:05,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 05:10:05,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 05:10:05,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 05:10:05,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 05:10:05,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 05:10:05,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 05:10:05,960 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 05:10:05,960 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 05:10:05,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:10:05 BoogieIcfgContainer [2020-10-13 05:10:05,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 05:10:05,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 05:10:05,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 05:10:05,972 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 05:10:05,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 05:10:05" (1/3) ... [2020-10-13 05:10:05,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70edc124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:10:05, skipping insertion in model container [2020-10-13 05:10:05,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:05" (2/3) ... [2020-10-13 05:10:05,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70edc124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:10:05, skipping insertion in model container [2020-10-13 05:10:05,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:10:05" (3/3) ... [2020-10-13 05:10:05,977 INFO L109 eAbstractionObserver]: Analyzing ICFG s12if.c [2020-10-13 05:10:05,992 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 05:10:06,004 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 05:10:06,029 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 05:10:06,073 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 05:10:06,074 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 05:10:06,074 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 05:10:06,075 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 05:10:06,075 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 05:10:06,075 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 05:10:06,076 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 05:10:06,076 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 05:10:06,110 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-13 05:10:06,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-13 05:10:06,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:10:06,124 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] [2020-10-13 05:10:06,124 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:10:06,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:10:06,133 INFO L82 PathProgramCache]: Analyzing trace with hash 2033030480, now seen corresponding path program 1 times [2020-10-13 05:10:06,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:10:06,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002185786] [2020-10-13 05:10:06,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:10:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:10:06,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:06,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:06,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:06,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:07,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:10:07,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 05:10:07,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:10:07,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 855 [2020-10-13 05:10:07,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:10:07,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:10:07,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 05:10:07,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:10:07,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 05:10:07,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:10:07,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:10:07,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:07,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:10:07,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:10:07,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:10:07,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 05:10:07,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:10:07,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:10:07,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:10:07,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:10:07,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:10:07,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 05:10:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:10:07,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:07,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:10:07,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:10:07,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:10:07,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 05:10:07,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:10:07,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:10:07,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 05:10:07,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:10:07,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 05:10:07,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:10:07,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002185786] [2020-10-13 05:10:07,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:10:07,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 05:10:07,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81281906] [2020-10-13 05:10:07,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 05:10:07,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:10:07,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 05:10:07,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 05:10:07,390 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-10-13 05:10:07,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:10:07,614 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2020-10-13 05:10:07,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 05:10:07,620 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-13 05:10:07,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:10:07,644 INFO L225 Difference]: With dead ends: 62 [2020-10-13 05:10:07,644 INFO L226 Difference]: Without dead ends: 29 [2020-10-13 05:10:07,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 05:10:07,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-13 05:10:07,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-13 05:10:07,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-13 05:10:07,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-13 05:10:07,708 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 23 [2020-10-13 05:10:07,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:10:07,709 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-13 05:10:07,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 05:10:07,709 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-13 05:10:07,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-13 05:10:07,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:10:07,711 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] [2020-10-13 05:10:07,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 05:10:07,712 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:10:07,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:10:07,712 INFO L82 PathProgramCache]: Analyzing trace with hash 706992569, now seen corresponding path program 1 times [2020-10-13 05:10:07,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:10:07,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982794815] [2020-10-13 05:10:07,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:10:07,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:10:07,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:07,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:07,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:08,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:10:08,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 05:10:08,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:10:08,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-13 05:10:08,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:10:08,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:10:08,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:10:08,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 05:10:08,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:10:08,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:10:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:10:08,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:08,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:10:08,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:10:08,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:10:08,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:10:08,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:10:08,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:10:08,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:10:08,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:10:08,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:10:08,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 05:10:08,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:10:08,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:08,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:10:08,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:10:08,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:10:08,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 05:10:08,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:10:08,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:10:08,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:10:08,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:10:08,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:10:08,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:10:08,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982794815] [2020-10-13 05:10:08,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:10:08,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 05:10:08,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562678477] [2020-10-13 05:10:08,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 05:10:08,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:10:08,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 05:10:08,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:10:08,127 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-13 05:10:08,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:10:08,322 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2020-10-13 05:10:08,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 05:10:08,322 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-13 05:10:08,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:10:08,324 INFO L225 Difference]: With dead ends: 51 [2020-10-13 05:10:08,324 INFO L226 Difference]: Without dead ends: 37 [2020-10-13 05:10:08,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:10:08,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-13 05:10:08,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2020-10-13 05:10:08,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-13 05:10:08,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-13 05:10:08,336 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2020-10-13 05:10:08,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:10:08,336 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-13 05:10:08,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 05:10:08,337 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-13 05:10:08,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-13 05:10:08,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:10:08,338 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] [2020-10-13 05:10:08,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 05:10:08,339 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:10:08,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:10:08,340 INFO L82 PathProgramCache]: Analyzing trace with hash 284203188, now seen corresponding path program 1 times [2020-10-13 05:10:08,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:10:08,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646840218] [2020-10-13 05:10:08,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:10:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:10:08,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:08,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:08,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:08,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:09,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:09,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:09,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:09,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:09,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:12,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:10:12,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 05:10:12,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 05:10:12,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3696 [2020-10-13 05:10:12,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:10:12,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 05:10:12,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 05:10:12,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 05:10:12,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:10:12,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:10:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:10:12,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:12,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:10:12,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 05:10:12,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:10:12,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 05:10:12,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:10:12,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:10:12,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:10:12,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:10:12,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 05:10:12,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 05:10:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:10:12,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:10:12,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:10:12,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 05:10:12,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:10:12,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:10:12,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:10:12,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:10:12,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:10:12,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:10:12,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:10:12,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:10:12,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646840218] [2020-10-13 05:10:12,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:10:12,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 05:10:12,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345030250] [2020-10-13 05:10:12,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 05:10:12,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:10:12,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 05:10:12,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-13 05:10:12,643 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 14 states. [2020-10-13 05:10:13,480 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2020-10-13 05:10:13,733 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-10-13 05:10:14,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:10:14,331 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2020-10-13 05:10:14,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 05:10:14,332 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 31 [2020-10-13 05:10:14,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:10:14,338 INFO L225 Difference]: With dead ends: 54 [2020-10-13 05:10:14,338 INFO L226 Difference]: Without dead ends: 48 [2020-10-13 05:10:14,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2020-10-13 05:10:14,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-13 05:10:14,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 39. [2020-10-13 05:10:14,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-13 05:10:14,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2020-10-13 05:10:14,352 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 31 [2020-10-13 05:10:14,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:10:14,353 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2020-10-13 05:10:14,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 05:10:14,353 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2020-10-13 05:10:14,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-13 05:10:14,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:10:14,355 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] [2020-10-13 05:10:14,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 05:10:14,356 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:10:14,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:10:14,356 INFO L82 PathProgramCache]: Analyzing trace with hash -525143438, now seen corresponding path program 1 times [2020-10-13 05:10:14,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:10:14,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957463127] [2020-10-13 05:10:14,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:10:14,372 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-13 05:10:14,373 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-13 05:10:14,373 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 05:10:14,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 05:10:14,407 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-13 05:10:14,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 05:10:14 BoogieIcfgContainer [2020-10-13 05:10:14,408 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 05:10:14,411 INFO L168 Benchmark]: Toolchain (without parser) took 9349.78 ms. Allocated memory was 140.5 MB in the beginning and 302.0 MB in the end (delta: 161.5 MB). Free memory was 104.2 MB in the beginning and 159.7 MB in the end (delta: -55.5 MB). Peak memory consumption was 106.0 MB. Max. memory is 7.1 GB. [2020-10-13 05:10:14,412 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 140.5 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-13 05:10:14,413 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.10 ms. Allocated memory is still 140.5 MB. Free memory was 104.0 MB in the beginning and 92.9 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-10-13 05:10:14,414 INFO L168 Benchmark]: Boogie Preprocessor took 148.23 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 92.9 MB in the beginning and 181.8 MB in the end (delta: -88.9 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2020-10-13 05:10:14,415 INFO L168 Benchmark]: RCFGBuilder took 436.34 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 162.8 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2020-10-13 05:10:14,416 INFO L168 Benchmark]: TraceAbstraction took 8440.28 ms. Allocated memory was 204.5 MB in the beginning and 302.0 MB in the end (delta: 97.5 MB). Free memory was 162.8 MB in the beginning and 159.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 100.6 MB. Max. memory is 7.1 GB. [2020-10-13 05:10:14,420 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 140.5 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 319.10 ms. Allocated memory is still 140.5 MB. Free memory was 104.0 MB in the beginning and 92.9 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 148.23 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 92.9 MB in the beginning and 181.8 MB in the end (delta: -88.9 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 436.34 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 162.8 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8440.28 ms. Allocated memory was 204.5 MB in the beginning and 302.0 MB in the end (delta: 97.5 MB). Free memory was 162.8 MB in the beginning and 159.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 100.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [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); [L29] sum[0] = 0 [L30] i=0 [L30] COND TRUE i