/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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 19:33:27,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:33:27,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:33:27,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:33:27,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:33:27,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:33:27,347 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:33:27,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:33:27,350 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:33:27,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:33:27,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:33:27,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:33:27,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:33:27,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:33:27,357 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:33:27,358 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:33:27,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:33:27,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:33:27,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:33:27,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:33:27,372 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:33:27,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:33:27,374 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:33:27,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:33:27,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:33:27,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:33:27,379 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:33:27,381 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:33:27,381 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:33:27,383 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:33:27,383 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:33:27,384 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:33:27,385 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:33:27,386 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:33:27,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:33:27,387 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:33:27,390 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:33:27,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:33:27,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:33:27,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:33:27,393 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:33:27,393 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 19:33:27,437 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:33:27,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:33:27,439 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:33:27,439 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:33:27,439 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:33:27,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:33:27,440 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:33:27,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:33:27,440 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:33:27,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:33:27,441 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:33:27,441 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:33:27,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:33:27,441 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:33:27,441 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:33:27,442 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:33:27,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:33:27,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:33:27,442 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:33:27,442 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:33:27,444 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:33:27,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:33:27,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:33:27,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:33:27,445 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:33:27,445 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:33:27,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:33:27,445 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:33:27,446 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:33:27,446 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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:33:27,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:33:27,976 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:33:27,980 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:33:27,981 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:33:27,982 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:33:27,983 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s4iff.c [2020-09-24 19:33:28,083 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1bc81c57/3ba63324e02947d7ad90389dea587c56/FLAG84fa54dd1 [2020-09-24 19:33:28,653 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:33:28,653 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s4iff.c [2020-09-24 19:33:28,661 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1bc81c57/3ba63324e02947d7ad90389dea587c56/FLAG84fa54dd1 [2020-09-24 19:33:29,010 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1bc81c57/3ba63324e02947d7ad90389dea587c56 [2020-09-24 19:33:29,024 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:33:29,030 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:33:29,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:33:29,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:33:29,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:33:29,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:33:29" (1/1) ... [2020-09-24 19:33:29,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17e5ec8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:33:29, skipping insertion in model container [2020-09-24 19:33:29,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:33:29" (1/1) ... [2020-09-24 19:33:29,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:33:29,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:33:29,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:33:29,328 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:33:29,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:33:29,457 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:33:29,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:33:29 WrapperNode [2020-09-24 19:33:29,458 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:33:29,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:33:29,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:33:29,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:33:29,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:33:29" (1/1) ... [2020-09-24 19:33:29,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:33:29" (1/1) ... [2020-09-24 19:33:29,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:33:29" (1/1) ... [2020-09-24 19:33:29,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:33:29" (1/1) ... [2020-09-24 19:33:29,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:33:29" (1/1) ... [2020-09-24 19:33:29,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:33:29" (1/1) ... [2020-09-24 19:33:29,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:33:29" (1/1) ... [2020-09-24 19:33:29,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:33:29,506 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:33:29,506 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:33:29,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:33:29,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:33:29" (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 19:33:29,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:33:29,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:33:29,586 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 19:33:29,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 19:33:29,586 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:33:29,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:33:29,587 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 19:33:29,587 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 19:33:29,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 19:33:29,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:33:29,587 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 19:33:29,588 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:33:29,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 19:33:29,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 19:33:29,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 19:33:29,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 19:33:29,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 19:33:29,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:33:29,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:33:29,899 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:33:29,899 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 19:33:29,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:33:29 BoogieIcfgContainer [2020-09-24 19:33:29,905 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:33:29,906 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:33:29,906 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:33:29,911 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:33:29,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:33:29" (1/3) ... [2020-09-24 19:33:29,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b036ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:33:29, skipping insertion in model container [2020-09-24 19:33:29,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:33:29" (2/3) ... [2020-09-24 19:33:29,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b036ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:33:29, skipping insertion in model container [2020-09-24 19:33:29,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:33:29" (3/3) ... [2020-09-24 19:33:29,917 INFO L109 eAbstractionObserver]: Analyzing ICFG s4iff.c [2020-09-24 19:33:29,931 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:33:29,944 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:33:29,970 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:33:30,006 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:33:30,006 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:33:30,006 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:33:30,006 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:33:30,007 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:33:30,007 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:33:30,007 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:33:30,007 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:33:30,037 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-24 19:33:30,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 19:33:30,047 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:33:30,048 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 19:33:30,049 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:33:30,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:33:30,055 INFO L82 PathProgramCache]: Analyzing trace with hash 171473808, now seen corresponding path program 1 times [2020-09-24 19:33:30,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:33:30,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601704597] [2020-09-24 19:33:30,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:33:30,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:30,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:30,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:30,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:30,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 19:33:30,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:33:30,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-09-24 19:33:30,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:30,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:33:30,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-24 19:33:30,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:33:30,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:33:30,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:33:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:30,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:30,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:30,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:33:30,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:33:30,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:33:30,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:30,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:33:30,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:33:30,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:33:30,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:33:30,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 19:33:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:30,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:30,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:30,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:33:30,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:33:30,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:33:30,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:30,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:33:30,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:33:30,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:33:30,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:33:30,623 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 19:33:30,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601704597] [2020-09-24 19:33:30,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:33:30,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 19:33:30,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958710409] [2020-09-24 19:33:30,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 19:33:30,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:33:30,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 19:33:30,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:33:30,662 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2020-09-24 19:33:30,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:33:30,870 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2020-09-24 19:33:30,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 19:33:30,874 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-09-24 19:33:30,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:33:30,892 INFO L225 Difference]: With dead ends: 113 [2020-09-24 19:33:30,893 INFO L226 Difference]: Without dead ends: 53 [2020-09-24 19:33:30,898 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 19:33:30,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-24 19:33:30,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-24 19:33:30,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-24 19:33:30,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-09-24 19:33:30,955 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 31 [2020-09-24 19:33:30,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:33:30,956 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-09-24 19:33:30,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 19:33:30,956 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-09-24 19:33:30,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 19:33:30,958 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:33:30,958 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 19:33:30,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:33:30,959 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:33:30,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:33:30,959 INFO L82 PathProgramCache]: Analyzing trace with hash 921692051, now seen corresponding path program 1 times [2020-09-24 19:33:30,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:33:30,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164801778] [2020-09-24 19:33:30,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:33:30,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:30,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:31,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:31,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:31,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 19:33:31,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:33:31,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-09-24 19:33:31,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:31,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:33:31,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 19:33:31,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 19:33:31,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:33:31,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:33:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:31,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:31,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:31,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:33:31,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:33:31,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:33:31,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:31,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:33:31,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:33:31,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:33:31,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:33:31,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 19:33:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:31,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:31,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:31,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:33:31,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:33:31,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:33:31,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:31,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:33:31,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:33:31,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:33:31,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:33:31,415 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 19:33:31,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164801778] [2020-09-24 19:33:31,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:33:31,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:33:31,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099525849] [2020-09-24 19:33:31,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:33:31,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:33:31,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:33:31,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:33:31,420 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 5 states. [2020-09-24 19:33:31,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:33:31,578 INFO L93 Difference]: Finished difference Result 80 states and 85 transitions. [2020-09-24 19:33:31,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:33:31,578 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-09-24 19:33:31,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:33:31,580 INFO L225 Difference]: With dead ends: 80 [2020-09-24 19:33:31,580 INFO L226 Difference]: Without dead ends: 55 [2020-09-24 19:33:31,582 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 19:33:31,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-24 19:33:31,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-24 19:33:31,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 19:33:31,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-09-24 19:33:31,593 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 31 [2020-09-24 19:33:31,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:33:31,593 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-09-24 19:33:31,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:33:31,593 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-09-24 19:33:31,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 19:33:31,595 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:33:31,596 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 19:33:31,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:33:31,596 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:33:31,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:33:31,597 INFO L82 PathProgramCache]: Analyzing trace with hash -827220298, now seen corresponding path program 1 times [2020-09-24 19:33:31,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:33:31,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158540717] [2020-09-24 19:33:31,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:33:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:31,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:31,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:32,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:32,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:32,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:32,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 19:33:32,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:33:32,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1060 [2020-09-24 19:33:32,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:32,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 19:33:32,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 19:33:32,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 19:33:32,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:33:33,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:33:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:33,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:33,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:33,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:33:33,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:33:33,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:33:33,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:33,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:33:33,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:33:33,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:33:33,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:33:33,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 19:33:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:33,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:33,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:33,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:33:33,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:33:33,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:33:33,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:33,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:33:33,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:33:33,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:33:33,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:33:33,601 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 19:33:33,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158540717] [2020-09-24 19:33:33,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:33:33,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-24 19:33:33,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478241105] [2020-09-24 19:33:33,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-24 19:33:33,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:33:33,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-24 19:33:33,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2020-09-24 19:33:33,608 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 20 states. [2020-09-24 19:33:35,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:33:35,178 INFO L93 Difference]: Finished difference Result 107 states and 113 transitions. [2020-09-24 19:33:35,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-24 19:33:35,179 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 48 [2020-09-24 19:33:35,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:33:35,183 INFO L225 Difference]: With dead ends: 107 [2020-09-24 19:33:35,188 INFO L226 Difference]: Without dead ends: 101 [2020-09-24 19:33:35,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=272, Invalid=1210, Unknown=0, NotChecked=0, Total=1482 [2020-09-24 19:33:35,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-09-24 19:33:35,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 73. [2020-09-24 19:33:35,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-24 19:33:35,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-09-24 19:33:35,214 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 48 [2020-09-24 19:33:35,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:33:35,216 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-09-24 19:33:35,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-24 19:33:35,217 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-09-24 19:33:35,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 19:33:35,218 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:33:35,219 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 19:33:35,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:33:35,220 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:33:35,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:33:35,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1272927570, now seen corresponding path program 1 times [2020-09-24 19:33:35,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:33:35,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509690747] [2020-09-24 19:33:35,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:33:35,251 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-24 19:33:35,251 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-24 19:33:35,251 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 19:33:35,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:33:35,304 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-24 19:33:35,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 07:33:35 BoogieIcfgContainer [2020-09-24 19:33:35,305 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 19:33:35,313 INFO L168 Benchmark]: Toolchain (without parser) took 6281.21 ms. Allocated memory was 140.5 MB in the beginning and 277.9 MB in the end (delta: 137.4 MB). Free memory was 103.7 MB in the beginning and 210.8 MB in the end (delta: -107.1 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. [2020-09-24 19:33:35,317 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.6 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-09-24 19:33:35,319 INFO L168 Benchmark]: CACSL2BoogieTranslator took 427.89 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 103.3 MB in the beginning and 181.5 MB in the end (delta: -78.3 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-09-24 19:33:35,320 INFO L168 Benchmark]: Boogie Preprocessor took 46.73 ms. Allocated memory is still 202.9 MB. Free memory was 181.5 MB in the beginning and 179.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-24 19:33:35,320 INFO L168 Benchmark]: RCFGBuilder took 399.00 ms. Allocated memory is still 202.9 MB. Free memory was 179.6 MB in the beginning and 160.3 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. [2020-09-24 19:33:35,321 INFO L168 Benchmark]: TraceAbstraction took 5398.46 ms. Allocated memory was 202.9 MB in the beginning and 277.9 MB in the end (delta: 75.0 MB). Free memory was 159.4 MB in the beginning and 210.8 MB in the end (delta: -51.4 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-09-24 19:33:35,326 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 140.5 MB. Free memory was 122.0 MB in the beginning and 121.6 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 427.89 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 103.3 MB in the beginning and 181.5 MB in the end (delta: -78.3 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 46.73 ms. Allocated memory is still 202.9 MB. Free memory was 181.5 MB in the beginning and 179.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 399.00 ms. Allocated memory is still 202.9 MB. Free memory was 179.6 MB in the beginning and 160.3 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5398.46 ms. Allocated memory was 202.9 MB in the beginning and 277.9 MB in the end (delta: 75.0 MB). Free memory was 159.4 MB in the beginning and 210.8 MB in the end (delta: -51.4 MB). Peak memory consumption was 23.5 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