/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=HIGHLEXORDER --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 22:55:08,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:55:08,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:55:08,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:55:08,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:55:08,862 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:55:08,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:55:08,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:55:08,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:55:08,873 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:55:08,874 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:55:08,875 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:55:08,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:55:08,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:55:08,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:55:08,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:55:08,885 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:55:08,886 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:55:08,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:55:08,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:55:08,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:55:08,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:55:08,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:55:08,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:55:08,913 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:55:08,913 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:55:08,914 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:55:08,916 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:55:08,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:55:08,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:55:08,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:55:08,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:55:08,930 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:55:08,931 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:55:08,932 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:55:08,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:55:08,933 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:55:08,934 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:55:08,934 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:55:08,935 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:55:08,936 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:55:08,937 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 22:55:08,962 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:55:08,963 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:55:08,964 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:55:08,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:55:08,964 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:55:08,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:55:08,965 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:55:08,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:55:08,965 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:55:08,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:55:08,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:55:08,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:55:08,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:55:08,966 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:55:08,966 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:55:08,967 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:55:08,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:55:08,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:55:08,967 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:55:08,967 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:55:08,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:55:08,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:55:08,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:55:08,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:55:08,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:55:08,969 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:55:08,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:55:08,969 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:55:08,969 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:55:08,970 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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:55:09,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:55:09,490 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:55:09,497 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:55:09,499 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:55:09,501 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:55:09,502 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s4iff.c [2020-09-24 22:55:09,586 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ede79a17/d2fcd7b8046946249d435e37976e3b59/FLAG0774f5b19 [2020-09-24 22:55:10,163 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:55:10,164 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s4iff.c [2020-09-24 22:55:10,173 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ede79a17/d2fcd7b8046946249d435e37976e3b59/FLAG0774f5b19 [2020-09-24 22:55:10,545 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ede79a17/d2fcd7b8046946249d435e37976e3b59 [2020-09-24 22:55:10,558 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:55:10,565 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:55:10,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:55:10,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:55:10,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:55:10,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:55:10" (1/1) ... [2020-09-24 22:55:10,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4231a4a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:10, skipping insertion in model container [2020-09-24 22:55:10,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:55:10" (1/1) ... [2020-09-24 22:55:10,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:55:10,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:55:10,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:55:10,852 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:55:10,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:55:10,987 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:55:10,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:10 WrapperNode [2020-09-24 22:55:10,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:55:10,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:55:10,989 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:55:10,989 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:55:11,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:10" (1/1) ... [2020-09-24 22:55:11,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:10" (1/1) ... [2020-09-24 22:55:11,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:10" (1/1) ... [2020-09-24 22:55:11,016 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:10" (1/1) ... [2020-09-24 22:55:11,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:10" (1/1) ... [2020-09-24 22:55:11,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:10" (1/1) ... [2020-09-24 22:55:11,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:10" (1/1) ... [2020-09-24 22:55:11,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:55:11,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:55:11,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:55:11,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:55:11,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:10" (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 22:55:11,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:55:11,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:55:11,116 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 22:55:11,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 22:55:11,116 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:55:11,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:55:11,117 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 22:55:11,117 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 22:55:11,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 22:55:11,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:55:11,118 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 22:55:11,118 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:55:11,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 22:55:11,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 22:55:11,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 22:55:11,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 22:55:11,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 22:55:11,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:55:11,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:55:11,412 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:55:11,413 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 22:55:11,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:55:11 BoogieIcfgContainer [2020-09-24 22:55:11,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:55:11,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:55:11,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:55:11,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:55:11,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:55:10" (1/3) ... [2020-09-24 22:55:11,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d01e6ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:55:11, skipping insertion in model container [2020-09-24 22:55:11,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:10" (2/3) ... [2020-09-24 22:55:11,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d01e6ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:55:11, skipping insertion in model container [2020-09-24 22:55:11,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:55:11" (3/3) ... [2020-09-24 22:55:11,430 INFO L109 eAbstractionObserver]: Analyzing ICFG s4iff.c [2020-09-24 22:55:11,447 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:55:11,456 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:55:11,481 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:55:11,517 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:55:11,517 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:55:11,517 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:55:11,517 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:55:11,518 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:55:11,518 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:55:11,518 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:55:11,518 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:55:11,545 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-24 22:55:11,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 22:55:11,556 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:11,557 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 22:55:11,558 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:11,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:11,565 INFO L82 PathProgramCache]: Analyzing trace with hash 171473808, now seen corresponding path program 1 times [2020-09-24 22:55:11,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:11,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143572207] [2020-09-24 22:55:11,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:11,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:11,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:11,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:11,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:11,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 22:55:11,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:55:11,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-09-24 22:55:11,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:11,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:11,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-24 22:55:11,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:11,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 22:55:12,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:55:12,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:12,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:12,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:12,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:55:12,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:12,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 22:55:12,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:12,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:12,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:12,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:12,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:55:12,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:55:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:12,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:12,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:12,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:55:12,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:12,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 22:55:12,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:12,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:12,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:12,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:12,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:55:12,156 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 22:55:12,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143572207] [2020-09-24 22:55:12,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:55:12,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 22:55:12,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031352091] [2020-09-24 22:55:12,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 22:55:12,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:55:12,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 22:55:12,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 22:55:12,192 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2020-09-24 22:55:12,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:55:12,365 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2020-09-24 22:55:12,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 22:55:12,368 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-09-24 22:55:12,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:55:12,380 INFO L225 Difference]: With dead ends: 113 [2020-09-24 22:55:12,380 INFO L226 Difference]: Without dead ends: 53 [2020-09-24 22:55:12,385 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 22:55:12,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-24 22:55:12,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-24 22:55:12,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-24 22:55:12,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-09-24 22:55:12,439 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 31 [2020-09-24 22:55:12,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:55:12,440 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-09-24 22:55:12,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 22:55:12,440 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-09-24 22:55:12,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 22:55:12,442 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:12,442 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 22:55:12,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:55:12,443 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:12,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:12,443 INFO L82 PathProgramCache]: Analyzing trace with hash 921692051, now seen corresponding path program 1 times [2020-09-24 22:55:12,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:12,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153975086] [2020-09-24 22:55:12,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:12,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:12,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:12,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:12,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 22:55:12,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:55:12,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 460 [2020-09-24 22:55:12,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:12,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:55:12,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 22:55:12,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 22:55:12,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:55:13,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:55:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:13,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:13,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:13,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:55:13,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:13,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 22:55:13,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:13,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:13,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:13,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:13,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:55:13,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:55:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:13,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:13,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:13,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:55:13,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:13,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 22:55:13,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:13,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:55:13,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:13,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:55:13,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:55:13,069 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 22:55:13,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153975086] [2020-09-24 22:55:13,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:55:13,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:55:13,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979926399] [2020-09-24 22:55:13,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:55:13,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:55:13,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:55:13,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:55:13,078 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 5 states. [2020-09-24 22:55:13,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:55:13,283 INFO L93 Difference]: Finished difference Result 80 states and 85 transitions. [2020-09-24 22:55:13,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:55:13,284 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-09-24 22:55:13,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:55:13,286 INFO L225 Difference]: With dead ends: 80 [2020-09-24 22:55:13,286 INFO L226 Difference]: Without dead ends: 55 [2020-09-24 22:55:13,288 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 22:55:13,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-24 22:55:13,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-24 22:55:13,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 22:55:13,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-09-24 22:55:13,299 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 31 [2020-09-24 22:55:13,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:55:13,300 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-09-24 22:55:13,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:55:13,300 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-09-24 22:55:13,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 22:55:13,302 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:13,302 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 22:55:13,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:55:13,303 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:13,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:13,303 INFO L82 PathProgramCache]: Analyzing trace with hash -827220298, now seen corresponding path program 1 times [2020-09-24 22:55:13,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:13,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251416365] [2020-09-24 22:55:13,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:13,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:13,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:13,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:14,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:14,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:15,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:15,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:16,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:16,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:18,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:18,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 22:55:18,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 22:55:18,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 22:55:18,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:18,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 22:55:18,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 22:55:18,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 22:55:18,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:55:19,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:55:19,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:19,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:19,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:19,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:55:19,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:19,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:55:19,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:19,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:19,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:19,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:19,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:55:19,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:55:19,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:19,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:19,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:19,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:55:19,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:19,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:55:19,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:19,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:19,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:19,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:19,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:55:19,238 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 22:55:19,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251416365] [2020-09-24 22:55:19,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:55:19,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-24 22:55:19,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504056087] [2020-09-24 22:55:19,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 22:55:19,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:55:19,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 22:55:19,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2020-09-24 22:55:19,244 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 21 states. [2020-09-24 22:55:20,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:55:20,521 INFO L93 Difference]: Finished difference Result 84 states and 87 transitions. [2020-09-24 22:55:20,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 22:55:20,524 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 48 [2020-09-24 22:55:20,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:55:20,528 INFO L225 Difference]: With dead ends: 84 [2020-09-24 22:55:20,528 INFO L226 Difference]: Without dead ends: 78 [2020-09-24 22:55:20,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=308, Invalid=1332, Unknown=0, NotChecked=0, Total=1640 [2020-09-24 22:55:20,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-24 22:55:20,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 67. [2020-09-24 22:55:20,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-24 22:55:20,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2020-09-24 22:55:20,546 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 48 [2020-09-24 22:55:20,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:55:20,547 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2020-09-24 22:55:20,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-24 22:55:20,550 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2020-09-24 22:55:20,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 22:55:20,551 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:20,553 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 22:55:20,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:55:20,554 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:20,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:20,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1272927570, now seen corresponding path program 1 times [2020-09-24 22:55:20,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:20,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655538830] [2020-09-24 22:55:20,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:20,580 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-24 22:55:20,581 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-24 22:55:20,581 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 22:55:20,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:55:20,617 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-24 22:55:20,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 10:55:20 BoogieIcfgContainer [2020-09-24 22:55:20,618 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 22:55:20,622 INFO L168 Benchmark]: Toolchain (without parser) took 10059.53 ms. Allocated memory was 146.8 MB in the beginning and 296.7 MB in the end (delta: 149.9 MB). Free memory was 102.5 MB in the beginning and 259.7 MB in the end (delta: -157.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 22:55:20,624 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-09-24 22:55:20,625 INFO L168 Benchmark]: CACSL2BoogieTranslator took 422.48 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 101.7 MB in the beginning and 181.5 MB in the end (delta: -79.8 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2020-09-24 22:55:20,628 INFO L168 Benchmark]: Boogie Preprocessor took 54.72 ms. Allocated memory is still 202.9 MB. Free memory was 181.5 MB in the beginning and 179.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-09-24 22:55:20,629 INFO L168 Benchmark]: RCFGBuilder took 376.68 ms. Allocated memory is still 202.9 MB. Free memory was 179.2 MB in the beginning and 159.8 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2020-09-24 22:55:20,636 INFO L168 Benchmark]: TraceAbstraction took 9195.79 ms. Allocated memory was 202.9 MB in the beginning and 296.7 MB in the end (delta: 93.8 MB). Free memory was 159.8 MB in the beginning and 259.7 MB in the end (delta: -99.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 22:55:20,647 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 422.48 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 101.7 MB in the beginning and 181.5 MB in the end (delta: -79.8 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 54.72 ms. Allocated memory is still 202.9 MB. Free memory was 181.5 MB in the beginning and 179.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 376.68 ms. Allocated memory is still 202.9 MB. Free memory was 179.2 MB in the beginning and 159.8 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9195.79 ms. Allocated memory was 202.9 MB in the beginning and 296.7 MB in the end (delta: 93.8 MB). Free memory was 159.8 MB in the beginning and 259.7 MB in the end (delta: -99.8 MB). There was no memory consumed. 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