/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=BIGGEST --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/s4iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:41:26,795 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:41:26,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:41:26,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:41:26,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:41:26,854 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:41:26,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:41:26,861 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:41:26,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:41:26,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:41:26,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:41:26,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:41:26,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:41:26,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:41:26,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:41:26,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:41:26,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:41:26,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:41:26,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:41:26,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:41:26,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:41:26,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:41:26,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:41:26,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:41:26,913 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:41:26,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:41:26,919 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:41:26,921 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:41:26,924 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:41:26,925 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:41:26,926 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:41:26,928 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:41:26,929 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:41:26,930 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:41:26,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:41:26,932 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:41:26,933 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:41:26,934 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:41:26,934 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:41:26,935 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:41:26,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:41:26,938 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 20:41:26,983 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:41:26,983 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:41:26,986 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:41:26,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:41:26,986 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:41:26,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:41:26,987 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:41:26,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:41:26,987 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:41:26,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:41:26,989 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:41:26,989 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:41:26,989 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:41:26,989 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:41:26,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:41:26,990 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:41:26,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:41:26,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:41:26,991 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:41:26,991 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:41:26,991 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:41:26,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:41:26,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:41:26,992 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:41:26,992 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:41:26,992 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:41:26,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:41:26,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:41:26,993 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:41:26,993 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true; [2020-09-24 20:41:27,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:41:27,497 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:41:27,504 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:41:27,506 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:41:27,507 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:41:27,508 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s4iff.c [2020-09-24 20:41:27,602 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ea446485/ca752c76d31641e7b71956c6c7900d54/FLAGa6035f76d [2020-09-24 20:41:28,178 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:41:28,179 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s4iff.c [2020-09-24 20:41:28,189 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ea446485/ca752c76d31641e7b71956c6c7900d54/FLAGa6035f76d [2020-09-24 20:41:28,501 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ea446485/ca752c76d31641e7b71956c6c7900d54 [2020-09-24 20:41:28,516 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:41:28,524 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:41:28,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:41:28,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:41:28,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:41:28,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:41:28" (1/1) ... [2020-09-24 20:41:28,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31a2ded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:28, skipping insertion in model container [2020-09-24 20:41:28,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:41:28" (1/1) ... [2020-09-24 20:41:28,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:41:28,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:41:28,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:41:28,814 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:41:28,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:41:28,858 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:41:28,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:28 WrapperNode [2020-09-24 20:41:28,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:41:28,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:41:28,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:41:28,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:41:28,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:28" (1/1) ... [2020-09-24 20:41:28,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:28" (1/1) ... [2020-09-24 20:41:28,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:28" (1/1) ... [2020-09-24 20:41:28,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:28" (1/1) ... [2020-09-24 20:41:28,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:28" (1/1) ... [2020-09-24 20:41:28,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:28" (1/1) ... [2020-09-24 20:41:28,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:28" (1/1) ... [2020-09-24 20:41:28,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:41:28,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:41:28,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:41:28,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:41:29,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:41:29,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:41:29,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:41:29,083 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 20:41:29,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 20:41:29,084 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:41:29,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:41:29,085 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 20:41:29,085 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 20:41:29,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 20:41:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:41:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 20:41:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:41:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 20:41:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 20:41:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 20:41:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 20:41:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 20:41:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:41:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:41:29,471 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:41:29,471 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 20:41:29,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:41:29 BoogieIcfgContainer [2020-09-24 20:41:29,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:41:29,479 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:41:29,479 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:41:29,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:41:29,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:41:28" (1/3) ... [2020-09-24 20:41:29,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f8ea414 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:41:29, skipping insertion in model container [2020-09-24 20:41:29,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:28" (2/3) ... [2020-09-24 20:41:29,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f8ea414 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:41:29, skipping insertion in model container [2020-09-24 20:41:29,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:41:29" (3/3) ... [2020-09-24 20:41:29,488 INFO L109 eAbstractionObserver]: Analyzing ICFG s4iff.c [2020-09-24 20:41:29,498 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:41:29,507 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:41:29,532 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:41:29,568 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:41:29,568 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:41:29,568 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:41:29,568 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:41:29,569 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:41:29,569 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:41:29,569 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:41:29,569 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:41:29,597 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-24 20:41:29,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 20:41:29,608 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:41:29,609 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] [2020-09-24 20:41:29,610 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:41:29,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:41:29,619 INFO L82 PathProgramCache]: Analyzing trace with hash 171473808, now seen corresponding path program 1 times [2020-09-24 20:41:29,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:41:29,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024994111] [2020-09-24 20:41:29,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:41:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:29,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:29,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:30,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:41:30,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 20:41:30,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:41:30,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-09-24 20:41:30,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:41:30,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:41:30,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-24 20:41:30,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:41:30,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 20:41:30,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:41:30,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:30,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:30,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:41:30,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:41:30,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:41:30,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 20:41:30,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:41:30,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:41:30,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:41:30,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:41:30,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:41:30,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:41:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:30,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:30,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:41:30,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:41:30,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:41:30,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 20:41:30,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:41:30,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:41:30,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:41:30,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:41:30,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:41:30,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:41:30,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024994111] [2020-09-24 20:41:30,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:41:30,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:41:30,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784418919] [2020-09-24 20:41:30,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:41:30,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:41:30,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:41:30,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:41:30,294 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2020-09-24 20:41:30,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:41:30,463 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2020-09-24 20:41:30,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:41:30,465 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-09-24 20:41:30,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:41:30,481 INFO L225 Difference]: With dead ends: 113 [2020-09-24 20:41:30,481 INFO L226 Difference]: Without dead ends: 53 [2020-09-24 20:41:30,486 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 [2020-09-24 20:41:30,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-24 20:41:30,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-24 20:41:30,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-24 20:41:30,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-09-24 20:41:30,557 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 31 [2020-09-24 20:41:30,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:41:30,558 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-09-24 20:41:30,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:41:30,558 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-09-24 20:41:30,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 20:41:30,560 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:41:30,560 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] [2020-09-24 20:41:30,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:41:30,561 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:41:30,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:41:30,562 INFO L82 PathProgramCache]: Analyzing trace with hash 921692051, now seen corresponding path program 1 times [2020-09-24 20:41:30,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:41:30,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246062066] [2020-09-24 20:41:30,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:41:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:30,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:30,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:31,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:41:31,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 20:41:31,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:41:31,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 446 [2020-09-24 20:41:31,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:41:31,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:41:31,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 20:41:31,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 20:41:31,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:41:31,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:41:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:31,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:31,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:41:31,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:41:31,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:41:31,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:41:31,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:41:31,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:41:31,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:41:31,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:41:31,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:41:31,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:41:31,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:31,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:31,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:41:31,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:41:31,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:41:31,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 20:41:31,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:41:31,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:41:31,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:41:31,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:41:31,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:41:31,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:41:31,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246062066] [2020-09-24 20:41:31,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:41:31,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:41:31,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891211175] [2020-09-24 20:41:31,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:41:31,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:41:31,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:41:31,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:41:31,179 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 5 states. [2020-09-24 20:41:31,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:41:31,358 INFO L93 Difference]: Finished difference Result 80 states and 85 transitions. [2020-09-24 20:41:31,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:41:31,358 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-09-24 20:41:31,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:41:31,361 INFO L225 Difference]: With dead ends: 80 [2020-09-24 20:41:31,361 INFO L226 Difference]: Without dead ends: 55 [2020-09-24 20:41:31,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:41:31,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-24 20:41:31,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-24 20:41:31,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 20:41:31,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-09-24 20:41:31,373 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 31 [2020-09-24 20:41:31,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:41:31,373 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-09-24 20:41:31,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:41:31,373 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-09-24 20:41:31,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 20:41:31,375 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:41:31,375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:41:31,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:41:31,376 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:41:31,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:41:31,376 INFO L82 PathProgramCache]: Analyzing trace with hash -827220298, now seen corresponding path program 1 times [2020-09-24 20:41:31,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:41:31,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935459410] [2020-09-24 20:41:31,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:41:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:31,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:31,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:31,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:32,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:32,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:33,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:33,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:34,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:34,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:36,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:41:36,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 20:41:36,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 20:41:36,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 20:41:36,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:41:36,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 20:41:36,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 20:41:36,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 20:41:36,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:41:37,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:41:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:37,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:37,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:41:37,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:41:37,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:41:37,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:41:37,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:41:37,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:41:37,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:41:37,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:41:37,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:41:37,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:41:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:37,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:37,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:41:37,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:41:37,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:41:37,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:41:37,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:41:37,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:41:37,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:41:37,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:41:37,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:41:37,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:41:37,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935459410] [2020-09-24 20:41:37,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:41:37,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 20:41:37,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138670352] [2020-09-24 20:41:37,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 20:41:37,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:41:37,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 20:41:37,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2020-09-24 20:41:37,740 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 23 states. [2020-09-24 20:41:38,554 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-09-24 20:41:39,404 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-09-24 20:41:40,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:41:40,362 INFO L93 Difference]: Finished difference Result 87 states and 91 transitions. [2020-09-24 20:41:40,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 20:41:40,363 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 48 [2020-09-24 20:41:40,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:41:40,365 INFO L225 Difference]: With dead ends: 87 [2020-09-24 20:41:40,365 INFO L226 Difference]: Without dead ends: 81 [2020-09-24 20:41:40,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=343, Invalid=1637, Unknown=0, NotChecked=0, Total=1980 [2020-09-24 20:41:40,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-24 20:41:40,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 67. [2020-09-24 20:41:40,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-24 20:41:40,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2020-09-24 20:41:40,382 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 48 [2020-09-24 20:41:40,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:41:40,383 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2020-09-24 20:41:40,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 20:41:40,383 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2020-09-24 20:41:40,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 20:41:40,384 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:41:40,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:41:40,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:41:40,385 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:41:40,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:41:40,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1272927570, now seen corresponding path program 1 times [2020-09-24 20:41:40,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:41:40,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134108244] [2020-09-24 20:41:40,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:41:40,400 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-24 20:41:40,400 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-24 20:41:40,400 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 20:41:40,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:41:40,426 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-24 20:41:40,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:41:40 BoogieIcfgContainer [2020-09-24 20:41:40,427 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 20:41:40,430 INFO L168 Benchmark]: Toolchain (without parser) took 11911.31 ms. Allocated memory was 139.5 MB in the beginning and 304.1 MB in the end (delta: 164.6 MB). Free memory was 103.2 MB in the beginning and 242.0 MB in the end (delta: -138.7 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-09-24 20:41:40,431 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 20:41:40,431 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.48 ms. Allocated memory is still 139.5 MB. Free memory was 102.3 MB in the beginning and 92.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-24 20:41:40,433 INFO L168 Benchmark]: Boogie Preprocessor took 138.06 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 92.0 MB in the beginning and 179.2 MB in the end (delta: -87.2 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-09-24 20:41:40,433 INFO L168 Benchmark]: RCFGBuilder took 479.04 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 160.0 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. [2020-09-24 20:41:40,434 INFO L168 Benchmark]: TraceAbstraction took 10948.69 ms. Allocated memory was 201.9 MB in the beginning and 304.1 MB in the end (delta: 102.2 MB). Free memory was 159.3 MB in the beginning and 242.0 MB in the end (delta: -82.7 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2020-09-24 20:41:40,439 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 334.48 ms. Allocated memory is still 139.5 MB. Free memory was 102.3 MB in the beginning and 92.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 138.06 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 92.0 MB in the beginning and 179.2 MB in the end (delta: -87.2 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 479.04 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 160.0 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10948.69 ms. Allocated memory was 201.9 MB in the beginning and 304.1 MB in the end (delta: 102.2 MB). Free memory was 159.3 MB in the beginning and 242.0 MB in the end (delta: -82.7 MB). Peak memory consumption was 19.6 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] = 1 [L30] i=0 [L30] COND TRUE i