/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=NARROWEST --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/s2iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:18:28,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:18:28,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:18:28,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:18:28,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:18:28,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:18:28,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:18:28,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:18:28,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:18:28,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:18:28,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:18:28,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:18:28,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:18:28,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:18:28,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:18:28,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:18:28,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:18:28,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:18:29,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:18:29,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:18:29,003 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:18:29,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:18:29,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:18:29,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:18:29,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:18:29,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:18:29,010 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:18:29,011 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:18:29,011 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:18:29,012 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:18:29,013 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:18:29,014 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:18:29,015 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:18:29,015 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:18:29,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:18:29,017 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:18:29,018 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:18:29,018 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:18:29,018 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:18:29,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:18:29,020 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:18:29,021 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 02:18:29,047 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:18:29,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:18:29,049 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:18:29,049 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:18:29,050 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:18:29,050 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:18:29,050 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:18:29,050 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:18:29,050 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:18:29,051 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:18:29,051 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:18:29,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:18:29,051 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:18:29,052 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:18:29,052 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:18:29,052 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:18:29,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:18:29,053 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:18:29,055 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:18:29,055 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:18:29,055 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:18:29,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:18:29,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:18:29,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:18:29,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:18:29,056 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:18:29,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:18:29,056 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:18:29,056 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:18:29,057 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 02:18:29,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:18:29,630 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:18:29,635 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:18:29,638 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:18:29,638 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:18:29,639 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s2iff.c [2020-09-25 02:18:29,721 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c92687e3/8b05964555094f3fa59f1d514db7e823/FLAG5a8fd3590 [2020-09-25 02:18:30,321 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:18:30,322 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s2iff.c [2020-09-25 02:18:30,331 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c92687e3/8b05964555094f3fa59f1d514db7e823/FLAG5a8fd3590 [2020-09-25 02:18:30,646 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c92687e3/8b05964555094f3fa59f1d514db7e823 [2020-09-25 02:18:30,662 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:18:30,668 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:18:30,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:18:30,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:18:30,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:18:30,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:18:30" (1/1) ... [2020-09-25 02:18:30,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@693e2903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:30, skipping insertion in model container [2020-09-25 02:18:30,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:18:30" (1/1) ... [2020-09-25 02:18:30,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:18:30,718 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:18:30,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:18:30,959 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:18:30,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:18:31,006 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:18:31,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:31 WrapperNode [2020-09-25 02:18:31,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:18:31,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:18:31,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:18:31,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:18:31,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:31" (1/1) ... [2020-09-25 02:18:31,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:31" (1/1) ... [2020-09-25 02:18:31,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:31" (1/1) ... [2020-09-25 02:18:31,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:31" (1/1) ... [2020-09-25 02:18:31,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:31" (1/1) ... [2020-09-25 02:18:31,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:31" (1/1) ... [2020-09-25 02:18:31,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:31" (1/1) ... [2020-09-25 02:18:31,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:18:31,143 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:18:31,143 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:18:31,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:18:31,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:18:31,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:18:31,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:18:31,229 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 02:18:31,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 02:18:31,229 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:18:31,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:18:31,230 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 02:18:31,230 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 02:18:31,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 02:18:31,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:18:31,231 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 02:18:31,231 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:18:31,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 02:18:31,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 02:18:31,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 02:18:31,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 02:18:31,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 02:18:31,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:18:31,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:18:31,604 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:18:31,605 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 02:18:31,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:18:31 BoogieIcfgContainer [2020-09-25 02:18:31,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:18:31,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:18:31,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:18:31,616 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:18:31,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:18:30" (1/3) ... [2020-09-25 02:18:31,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6691d15f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:18:31, skipping insertion in model container [2020-09-25 02:18:31,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:31" (2/3) ... [2020-09-25 02:18:31,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6691d15f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:18:31, skipping insertion in model container [2020-09-25 02:18:31,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:18:31" (3/3) ... [2020-09-25 02:18:31,621 INFO L109 eAbstractionObserver]: Analyzing ICFG s2iff.c [2020-09-25 02:18:31,634 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:18:31,645 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:18:31,668 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:18:31,701 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:18:31,701 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:18:31,701 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:18:31,702 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:18:31,702 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:18:31,702 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:18:31,702 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:18:31,702 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:18:31,728 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-25 02:18:31,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 02:18:31,736 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:31,737 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:18:31,737 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:31,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:31,744 INFO L82 PathProgramCache]: Analyzing trace with hash 171473808, now seen corresponding path program 1 times [2020-09-25 02:18:31,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:31,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652388910] [2020-09-25 02:18:31,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:31,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:31,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:32,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:32,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:32,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 02:18:32,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:18:32,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-09-25 02:18:32,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:32,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:32,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 02:18:32,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:32,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 02:18:32,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:18:32,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:32,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:32,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:32,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:18:32,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:32,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 02:18:32,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:32,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:32,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:32,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:32,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:32,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 02:18:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:32,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:32,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:32,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:18:32,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:32,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:18:32,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:32,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:32,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:32,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:32,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:32,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:18:32,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652388910] [2020-09-25 02:18:32,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:18:32,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 02:18:32,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087237733] [2020-09-25 02:18:32,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 02:18:32,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:18:32,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 02:18:32,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 02:18:32,325 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2020-09-25 02:18:32,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:18:32,506 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2020-09-25 02:18:32,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 02:18:32,508 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-09-25 02:18:32,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:18:32,520 INFO L225 Difference]: With dead ends: 113 [2020-09-25 02:18:32,521 INFO L226 Difference]: Without dead ends: 53 [2020-09-25 02:18:32,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 02:18:32,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-25 02:18:32,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-25 02:18:32,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 02:18:32,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-09-25 02:18:32,589 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 31 [2020-09-25 02:18:32,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:18:32,591 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-09-25 02:18:32,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 02:18:32,592 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-09-25 02:18:32,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 02:18:32,595 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:32,596 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] [2020-09-25 02:18:32,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:18:32,597 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:32,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:32,598 INFO L82 PathProgramCache]: Analyzing trace with hash 921692051, now seen corresponding path program 1 times [2020-09-25 02:18:32,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:32,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418493849] [2020-09-25 02:18:32,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:32,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:32,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:32,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:33,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:33,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 02:18:33,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:18:33,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 462 [2020-09-25 02:18:33,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:33,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:18:33,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 02:18:33,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 02:18:33,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:33,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:18:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:33,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:33,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:33,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:18:33,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:33,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 02:18:33,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:33,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:33,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:33,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:33,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:18:33,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 02:18:33,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:33,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:33,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:33,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:18:33,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:33,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 02:18:33,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:33,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:18:33,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:33,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:18:33,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:18:33,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:18:33,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418493849] [2020-09-25 02:18:33,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:18:33,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:18:33,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224711653] [2020-09-25 02:18:33,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:18:33,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:18:33,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:18:33,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:18:33,272 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 5 states. [2020-09-25 02:18:33,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:18:33,491 INFO L93 Difference]: Finished difference Result 80 states and 85 transitions. [2020-09-25 02:18:33,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:18:33,492 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-09-25 02:18:33,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:18:33,494 INFO L225 Difference]: With dead ends: 80 [2020-09-25 02:18:33,494 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 02:18:33,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:18:33,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 02:18:33,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-25 02:18:33,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 02:18:33,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-09-25 02:18:33,516 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 31 [2020-09-25 02:18:33,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:18:33,521 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-09-25 02:18:33,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:18:33,522 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-09-25 02:18:33,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 02:18:33,525 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:33,525 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:18:33,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:18:33,525 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:33,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:33,527 INFO L82 PathProgramCache]: Analyzing trace with hash -827220298, now seen corresponding path program 1 times [2020-09-25 02:18:33,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:33,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553535997] [2020-09-25 02:18:33,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:33,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:33,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:33,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:34,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:34,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:35,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:35,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:35,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:36,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:36,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:38,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:38,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 02:18:38,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 02:18:38,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 02:18:38,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:38,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 02:18:38,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 02:18:38,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:18:38,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:18:39,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:18:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:39,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:39,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:39,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:18:39,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:39,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:18:39,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:39,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:39,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:39,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:39,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:18:39,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 02:18:39,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:39,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:39,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:39,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:18:39,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:39,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:18:39,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:39,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:39,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:39,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:39,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:18:39,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:18:39,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553535997] [2020-09-25 02:18:39,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:18:39,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 02:18:39,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846703170] [2020-09-25 02:18:39,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 02:18:39,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:18:39,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 02:18:39,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2020-09-25 02:18:39,320 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 20 states. [2020-09-25 02:18:40,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:18:40,758 INFO L93 Difference]: Finished difference Result 84 states and 87 transitions. [2020-09-25 02:18:40,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 02:18:40,759 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 48 [2020-09-25 02:18:40,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:18:40,760 INFO L225 Difference]: With dead ends: 84 [2020-09-25 02:18:40,761 INFO L226 Difference]: Without dead ends: 78 [2020-09-25 02:18:40,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=289, Invalid=1271, Unknown=0, NotChecked=0, Total=1560 [2020-09-25 02:18:40,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-25 02:18:40,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 67. [2020-09-25 02:18:40,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-25 02:18:40,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2020-09-25 02:18:40,774 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 48 [2020-09-25 02:18:40,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:18:40,775 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2020-09-25 02:18:40,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-25 02:18:40,775 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2020-09-25 02:18:40,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 02:18:40,777 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:40,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:18:40,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:18:40,778 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:40,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:40,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1272927570, now seen corresponding path program 1 times [2020-09-25 02:18:40,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:40,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089397809] [2020-09-25 02:18:40,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:40,794 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-25 02:18:40,795 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-25 02:18:40,795 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 02:18:40,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:18:40,821 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-25 02:18:40,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:18:40 BoogieIcfgContainer [2020-09-25 02:18:40,822 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 02:18:40,826 INFO L168 Benchmark]: Toolchain (without parser) took 10160.61 ms. Allocated memory was 144.2 MB in the beginning and 294.6 MB in the end (delta: 150.5 MB). Free memory was 100.3 MB in the beginning and 160.5 MB in the end (delta: -60.2 MB). Peak memory consumption was 90.3 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:40,827 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 144.2 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-25 02:18:40,828 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.33 ms. Allocated memory is still 144.2 MB. Free memory was 99.7 MB in the beginning and 89.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:40,829 INFO L168 Benchmark]: Boogie Preprocessor took 134.56 ms. Allocated memory was 144.2 MB in the beginning and 200.3 MB in the end (delta: 56.1 MB). Free memory was 89.3 MB in the beginning and 177.7 MB in the end (delta: -88.4 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:40,830 INFO L168 Benchmark]: RCFGBuilder took 467.66 ms. Allocated memory is still 200.3 MB. Free memory was 177.7 MB in the beginning and 158.3 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:40,831 INFO L168 Benchmark]: TraceAbstraction took 9210.13 ms. Allocated memory was 200.3 MB in the beginning and 294.6 MB in the end (delta: 94.4 MB). Free memory was 157.6 MB in the beginning and 160.5 MB in the end (delta: -2.8 MB). Peak memory consumption was 91.5 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:40,834 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 144.2 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 338.33 ms. Allocated memory is still 144.2 MB. Free memory was 99.7 MB in the beginning and 89.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.56 ms. Allocated memory was 144.2 MB in the beginning and 200.3 MB in the end (delta: 56.1 MB). Free memory was 89.3 MB in the beginning and 177.7 MB in the end (delta: -88.4 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 467.66 ms. Allocated memory is still 200.3 MB. Free memory was 177.7 MB in the beginning and 158.3 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9210.13 ms. Allocated memory was 200.3 MB in the beginning and 294.6 MB in the end (delta: 94.4 MB). Free memory was 157.6 MB in the beginning and 160.5 MB in the end (delta: -2.8 MB). Peak memory consumption was 91.5 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