/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=DEEPEST --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/s1iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:09:06,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:09:06,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:09:06,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:09:06,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:09:06,760 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:09:06,763 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:09:06,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:09:06,770 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:09:06,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:09:06,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:09:06,779 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:09:06,779 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:09:06,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:09:06,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:09:06,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:09:06,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:09:06,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:09:06,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:09:06,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:09:06,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:09:06,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:09:06,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:09:06,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:09:06,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:09:06,810 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:09:06,810 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:09:06,813 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:09:06,814 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:09:06,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:09:06,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:09:06,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:09:06,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:09:06,818 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:09:06,819 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:09:06,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:09:06,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:09:06,821 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:09:06,821 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:09:06,822 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:09:06,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:09:06,825 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 [2020-09-25 01:09:06,871 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:09:06,871 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:09:06,873 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:09:06,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:09:06,874 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:09:06,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:09:06,875 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:09:06,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:09:06,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:09:06,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:09:06,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:09:06,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:09:06,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:09:06,877 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:09:06,877 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:09:06,877 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:09:06,878 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:09:06,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:09:06,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:09:06,878 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:09:06,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:09:06,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:09:06,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:09:06,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:09:06,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:09:06,880 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:09:06,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:09:06,880 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:09:06,880 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:09:06,881 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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;log-additional-information=true; [2020-09-25 01:09:07,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:09:07,397 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:09:07,403 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:09:07,406 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:09:07,406 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:09:07,408 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s1iff.c [2020-09-25 01:09:07,491 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66d71830d/ed2607836fee4d819376e572fae692cd/FLAG6832fa808 [2020-09-25 01:09:08,028 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:09:08,029 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s1iff.c [2020-09-25 01:09:08,039 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66d71830d/ed2607836fee4d819376e572fae692cd/FLAG6832fa808 [2020-09-25 01:09:08,378 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66d71830d/ed2607836fee4d819376e572fae692cd [2020-09-25 01:09:08,391 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:09:08,396 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:09:08,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:09:08,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:09:08,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:09:08,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:09:08" (1/1) ... [2020-09-25 01:09:08,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68e64c0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:08, skipping insertion in model container [2020-09-25 01:09:08,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:09:08" (1/1) ... [2020-09-25 01:09:08,416 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:09:08,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:09:08,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:09:08,698 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:09:08,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:09:08,854 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:09:08,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:08 WrapperNode [2020-09-25 01:09:08,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:09:08,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:09:08,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:09:08,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:09:08,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:08" (1/1) ... [2020-09-25 01:09:08,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:08" (1/1) ... [2020-09-25 01:09:08,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:08" (1/1) ... [2020-09-25 01:09:08,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:08" (1/1) ... [2020-09-25 01:09:08,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:08" (1/1) ... [2020-09-25 01:09:08,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:08" (1/1) ... [2020-09-25 01:09:08,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:08" (1/1) ... [2020-09-25 01:09:08,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:09:08,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:09:08,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:09:08,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:09:08,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:08" (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 [2020-09-25 01:09:08,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:09:08,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:09:08,992 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 01:09:08,992 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 01:09:08,993 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:09:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:09:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 01:09:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 01:09:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 01:09:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 01:09:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 01:09:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:09:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 01:09:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 01:09:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 01:09:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 01:09:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 01:09:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:09:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:09:09,316 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:09:09,316 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 01:09:09,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:09:09 BoogieIcfgContainer [2020-09-25 01:09:09,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:09:09,325 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:09:09,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:09:09,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:09:09,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:09:08" (1/3) ... [2020-09-25 01:09:09,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c904b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:09:09, skipping insertion in model container [2020-09-25 01:09:09,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:08" (2/3) ... [2020-09-25 01:09:09,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c904b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:09:09, skipping insertion in model container [2020-09-25 01:09:09,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:09:09" (3/3) ... [2020-09-25 01:09:09,336 INFO L109 eAbstractionObserver]: Analyzing ICFG s1iff.c [2020-09-25 01:09:09,350 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:09:09,361 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:09:09,385 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:09:09,420 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:09:09,421 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:09:09,421 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:09:09,421 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:09:09,421 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:09:09,421 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:09:09,422 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:09:09,422 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:09:09,449 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-25 01:09:09,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 01:09:09,459 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:09:09,460 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] [2020-09-25 01:09:09,461 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:09:09,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:09:09,474 INFO L82 PathProgramCache]: Analyzing trace with hash 171473808, now seen corresponding path program 1 times [2020-09-25 01:09:09,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:09:09,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581553546] [2020-09-25 01:09:09,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:09:09,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:09,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:09,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:09,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:09,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 01:09:09,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:09:09,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-09-25 01:09:09,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:09,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:09:09,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-25 01:09:09,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:09:09,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 01:09:09,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:09:09,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:09,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:09,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:09,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 01:09:09,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:09:09,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 01:09:09,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:09,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:09:09,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:09:09,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:09:09,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:09:09,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 01:09:10,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:10,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:10,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:10,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:09:10,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:09:10,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 01:09:10,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:10,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:09:10,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:09:10,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:09:10,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 01:09:10,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:09:10,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581553546] [2020-09-25 01:09:10,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:09:10,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 01:09:10,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888404808] [2020-09-25 01:09:10,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 01:09:10,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:09:10,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 01:09:10,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:09:10,085 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2020-09-25 01:09:10,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:09:10,300 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2020-09-25 01:09:10,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 01:09:10,302 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-09-25 01:09:10,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:09:10,314 INFO L225 Difference]: With dead ends: 113 [2020-09-25 01:09:10,315 INFO L226 Difference]: Without dead ends: 53 [2020-09-25 01:09:10,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:09:10,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-25 01:09:10,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-25 01:09:10,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 01:09:10,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-09-25 01:09:10,372 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 31 [2020-09-25 01:09:10,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:09:10,373 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-09-25 01:09:10,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 01:09:10,373 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-09-25 01:09:10,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 01:09:10,374 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:09:10,375 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] [2020-09-25 01:09:10,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:09:10,376 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:09:10,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:09:10,376 INFO L82 PathProgramCache]: Analyzing trace with hash 921692051, now seen corresponding path program 1 times [2020-09-25 01:09:10,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:09:10,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238347448] [2020-09-25 01:09:10,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:09:10,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:10,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:10,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:10,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:10,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 01:09:10,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:09:10,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-09-25 01:09:10,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:10,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:09:10,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 01:09:10,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 01:09:10,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:09:10,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:09:10,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:10,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:10,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:10,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 01:09:10,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:09:10,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 01:09:10,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:10,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:09:10,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:09:10,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:09:10,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:09:10,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 01:09:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:10,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:10,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:10,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:09:10,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:09:10,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 01:09:10,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:10,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:09:10,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:09:10,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:09:10,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:09:10,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:09:10,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238347448] [2020-09-25 01:09:10,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:09:10,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 01:09:10,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131844121] [2020-09-25 01:09:10,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:09:10,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:09:10,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:09:10,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:09:10,893 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 5 states. [2020-09-25 01:09:11,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:09:11,070 INFO L93 Difference]: Finished difference Result 80 states and 85 transitions. [2020-09-25 01:09:11,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:09:11,071 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-09-25 01:09:11,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:09:11,072 INFO L225 Difference]: With dead ends: 80 [2020-09-25 01:09:11,073 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 01:09:11,074 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 [2020-09-25 01:09:11,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 01:09:11,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-25 01:09:11,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 01:09:11,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-09-25 01:09:11,085 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 31 [2020-09-25 01:09:11,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:09:11,086 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-09-25 01:09:11,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:09:11,086 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-09-25 01:09:11,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 01:09:11,088 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:09:11,088 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] [2020-09-25 01:09:11,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:09:11,089 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:09:11,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:09:11,089 INFO L82 PathProgramCache]: Analyzing trace with hash -827220298, now seen corresponding path program 1 times [2020-09-25 01:09:11,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:09:11,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849611587] [2020-09-25 01:09:11,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:09:11,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:11,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:11,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:11,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:11,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:12,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:13,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:13,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:14,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:14,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:14,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:15,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:15,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:15,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:16,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:16,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 01:09:16,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 01:09:16,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 01:09:16,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:16,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 01:09:16,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 01:09:16,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 01:09:16,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:09:16,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:09:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:16,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:16,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:16,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 01:09:16,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:09:16,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 01:09:16,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:16,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:09:16,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:09:16,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:09:16,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:09:16,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 01:09:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:16,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:16,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:16,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:09:16,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:09:16,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 01:09:16,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:16,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:09:16,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:09:16,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:09:16,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:09:16,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:09:16,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849611587] [2020-09-25 01:09:16,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:09:16,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 01:09:16,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764599911] [2020-09-25 01:09:16,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 01:09:16,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:09:16,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 01:09:16,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-09-25 01:09:16,864 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 17 states. [2020-09-25 01:09:17,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:09:17,789 INFO L93 Difference]: Finished difference Result 107 states and 113 transitions. [2020-09-25 01:09:17,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 01:09:17,789 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 48 [2020-09-25 01:09:17,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:09:17,794 INFO L225 Difference]: With dead ends: 107 [2020-09-25 01:09:17,796 INFO L226 Difference]: Without dead ends: 101 [2020-09-25 01:09:17,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2020-09-25 01:09:17,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-09-25 01:09:17,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 73. [2020-09-25 01:09:17,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-25 01:09:17,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-09-25 01:09:17,822 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 48 [2020-09-25 01:09:17,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:09:17,823 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-09-25 01:09:17,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 01:09:17,829 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-09-25 01:09:17,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 01:09:17,833 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:09:17,833 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] [2020-09-25 01:09:17,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:09:17,834 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:09:17,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:09:17,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1272927570, now seen corresponding path program 1 times [2020-09-25 01:09:17,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:09:17,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685813946] [2020-09-25 01:09:17,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:09:17,856 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-25 01:09:17,858 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-25 01:09:17,858 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 01:09:17,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:09:17,917 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-25 01:09:17,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:09:17 BoogieIcfgContainer [2020-09-25 01:09:17,918 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 01:09:17,923 INFO L168 Benchmark]: Toolchain (without parser) took 9527.84 ms. Allocated memory was 140.0 MB in the beginning and 283.6 MB in the end (delta: 143.7 MB). Free memory was 100.4 MB in the beginning and 188.8 MB in the end (delta: -88.5 MB). Peak memory consumption was 55.2 MB. Max. memory is 7.1 GB. [2020-09-25 01:09:17,925 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 140.0 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 01:09:17,926 INFO L168 Benchmark]: CACSL2BoogieTranslator took 458.32 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 99.7 MB in the beginning and 180.7 MB in the end (delta: -81.0 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-09-25 01:09:17,928 INFO L168 Benchmark]: Boogie Preprocessor took 51.98 ms. Allocated memory is still 201.9 MB. Free memory was 180.7 MB in the beginning and 178.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-09-25 01:09:17,930 INFO L168 Benchmark]: RCFGBuilder took 415.28 ms. Allocated memory is still 201.9 MB. Free memory was 178.3 MB in the beginning and 159.1 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2020-09-25 01:09:17,939 INFO L168 Benchmark]: TraceAbstraction took 8592.78 ms. Allocated memory was 201.9 MB in the beginning and 283.6 MB in the end (delta: 81.8 MB). Free memory was 158.5 MB in the beginning and 188.8 MB in the end (delta: -30.4 MB). Peak memory consumption was 51.4 MB. Max. memory is 7.1 GB. [2020-09-25 01:09:17,952 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 140.0 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 458.32 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 99.7 MB in the beginning and 180.7 MB in the end (delta: -81.0 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.98 ms. Allocated memory is still 201.9 MB. Free memory was 180.7 MB in the beginning and 178.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 415.28 ms. Allocated memory is still 201.9 MB. Free memory was 178.3 MB in the beginning and 159.1 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8592.78 ms. Allocated memory was 201.9 MB in the beginning and 283.6 MB in the end (delta: 81.8 MB). Free memory was 158.5 MB in the beginning and 188.8 MB in the end (delta: -30.4 MB). Peak memory consumption was 51.4 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] = 1 [L30] i=0 [L30] COND TRUE i