/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 SequenceOfStatements --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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-fpi/brs5f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:50:40,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:50:40,745 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:50:40,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:50:40,796 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:50:40,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:50:40,806 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:50:40,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:50:40,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:50:40,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:50:40,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:50:40,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:50:40,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:50:40,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:50:40,831 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:50:40,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:50:40,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:50:40,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:50:40,845 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:50:40,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:50:40,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:50:40,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:50:40,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:50:40,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:50:40,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:50:40,865 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:50:40,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:50:40,868 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:50:40,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:50:40,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:50:40,871 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:50:40,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:50:40,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:50:40,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:50:40,876 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:50:40,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:50:40,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:50:40,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:50:40,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:50:40,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:50:40,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:50:40,881 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 [2020-10-29 03:50:40,934 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:50:40,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:50:40,939 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:50:40,939 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:50:40,939 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:50:40,939 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:50:40,940 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:50:40,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:50:40,940 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:50:40,940 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:50:40,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:50:40,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:50:40,942 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:50:40,942 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:50:40,942 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:50:40,942 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:50:40,943 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:50:40,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:50:40,943 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:50:40,943 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:50:40,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:50:40,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:50:40,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:50:40,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:50:40,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:50:40,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:50:40,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:50:40,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:50:40,954 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:50:40,955 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:50:41,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:50:41,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:50:41,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:50:41,385 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:50:41,386 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:50:41,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs5f.c [2020-10-29 03:50:41,468 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95a04a5c5/0cfa6789eac0402b81de2830af8d7898/FLAGc71828618 [2020-10-29 03:50:42,104 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:50:42,105 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/brs5f.c [2020-10-29 03:50:42,112 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95a04a5c5/0cfa6789eac0402b81de2830af8d7898/FLAGc71828618 [2020-10-29 03:50:42,128 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95a04a5c5/0cfa6789eac0402b81de2830af8d7898 [2020-10-29 03:50:42,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:50:42,137 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:50:42,139 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:50:42,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:50:42,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:50:42,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:50:42" (1/1) ... [2020-10-29 03:50:42,148 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@741bb448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:42, skipping insertion in model container [2020-10-29 03:50:42,148 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:50:42" (1/1) ... [2020-10-29 03:50:42,156 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:50:42,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:50:42,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:50:42,339 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:50:42,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:50:42,374 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:50:42,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:42 WrapperNode [2020-10-29 03:50:42,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:50:42,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:50:42,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:50:42,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:50:42,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:42" (1/1) ... [2020-10-29 03:50:42,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:42" (1/1) ... [2020-10-29 03:50:42,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:42" (1/1) ... [2020-10-29 03:50:42,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:42" (1/1) ... [2020-10-29 03:50:42,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:42" (1/1) ... [2020-10-29 03:50:42,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:42" (1/1) ... [2020-10-29 03:50:42,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:42" (1/1) ... [2020-10-29 03:50:42,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:50:42,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:50:42,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:50:42,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:50:42,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:42" (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 [2020-10-29 03:50:42,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:50:42,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:50:42,487 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:50:42,487 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 03:50:42,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:50:42,487 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:50:42,487 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:50:42,488 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:50:42,488 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:50:42,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:50:42,488 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 03:50:42,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:50:42,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:50:42,489 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 03:50:42,489 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:50:42,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 03:50:42,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:50:42,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:50:42,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:50:42,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:50:42,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:50:42,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:50:42,763 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:50:42,764 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-29 03:50:42,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:50:42 BoogieIcfgContainer [2020-10-29 03:50:42,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:50:42,768 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:50:42,768 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:50:42,772 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:50:42,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:50:42" (1/3) ... [2020-10-29 03:50:42,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9cb15f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:50:42, skipping insertion in model container [2020-10-29 03:50:42,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:50:42" (2/3) ... [2020-10-29 03:50:42,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9cb15f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:50:42, skipping insertion in model container [2020-10-29 03:50:42,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:50:42" (3/3) ... [2020-10-29 03:50:42,775 INFO L111 eAbstractionObserver]: Analyzing ICFG brs5f.c [2020-10-29 03:50:42,804 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:50:42,815 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:50:42,850 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:50:42,922 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:50:42,922 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:50:42,922 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:50:42,922 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:50:42,922 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:50:42,923 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:50:42,923 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:50:42,923 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:50:42,963 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-29 03:50:42,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 03:50:42,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:42,981 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] [2020-10-29 03:50:42,982 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:42,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:42,993 INFO L82 PathProgramCache]: Analyzing trace with hash 288317380, now seen corresponding path program 1 times [2020-10-29 03:50:43,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:43,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376778806] [2020-10-29 03:50:43,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:43,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:43,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:43,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:43,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:43,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:50:43,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:50:43,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-29 03:50:43,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:43,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:43,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:43,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 03:50:43,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:43,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:50:43,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:43,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:43,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:43,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:43,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:43,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:43,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 03:50:43,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:43,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:43,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:43,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:43,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:43,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:50:43,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:50:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:43,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:43,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:43,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:43,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:43,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:50:43,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 03:50:43,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:43,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:43,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:43,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:43,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:43,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:50:43,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:50:43,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376778806] [2020-10-29 03:50:43,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:50:43,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 03:50:43,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499776807] [2020-10-29 03:50:43,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-29 03:50:43,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:43,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-29 03:50:43,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 03:50:43,839 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-10-29 03:50:43,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:43,959 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2020-10-29 03:50:43,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 03:50:43,960 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-29 03:50:43,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:43,968 INFO L225 Difference]: With dead ends: 61 [2020-10-29 03:50:43,969 INFO L226 Difference]: Without dead ends: 27 [2020-10-29 03:50:43,972 INFO L677 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 [2020-10-29 03:50:43,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-29 03:50:44,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-29 03:50:44,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-29 03:50:44,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-10-29 03:50:44,015 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 22 [2020-10-29 03:50:44,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:44,015 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-10-29 03:50:44,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-29 03:50:44,016 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-10-29 03:50:44,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 03:50:44,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:44,017 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] [2020-10-29 03:50:44,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:50:44,018 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:44,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:44,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1231035376, now seen corresponding path program 1 times [2020-10-29 03:50:44,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:44,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781274734] [2020-10-29 03:50:44,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:44,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:44,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:44,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:44,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:44,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:50:44,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:50:44,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-10-29 03:50:44,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:44,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:44,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:50:44,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:50:44,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:50:44,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 03:50:44,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:44,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:44,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:44,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:44,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:44,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 03:50:44,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:44,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:44,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:44,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:44,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:44,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:50:44,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:50:44,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:44,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:44,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:44,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:44,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:44,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 03:50:44,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:44,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:44,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:44,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:44,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:44,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:50:44,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:50:44,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781274734] [2020-10-29 03:50:44,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:50:44,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 03:50:44,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090954605] [2020-10-29 03:50:44,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:50:44,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:44,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:50:44,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:50:44,586 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 5 states. [2020-10-29 03:50:44,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:44,757 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-10-29 03:50:44,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:50:44,758 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-29 03:50:44,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:44,759 INFO L225 Difference]: With dead ends: 40 [2020-10-29 03:50:44,759 INFO L226 Difference]: Without dead ends: 29 [2020-10-29 03:50:44,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:50:44,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-29 03:50:44,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-29 03:50:44,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-29 03:50:44,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-29 03:50:44,769 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 22 [2020-10-29 03:50:44,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:44,769 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-29 03:50:44,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:50:44,770 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-29 03:50:44,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 03:50:44,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:44,771 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] [2020-10-29 03:50:44,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:50:44,771 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:44,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:44,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1214934215, now seen corresponding path program 1 times [2020-10-29 03:50:44,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:44,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985590292] [2020-10-29 03:50:44,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:44,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:44,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:44,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:45,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:45,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:50:45,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:50:45,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 875 [2020-10-29 03:50:45,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:45,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:45,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:50:45,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:50:45,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:50:45,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:45,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:50:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:45,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:45,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:45,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:50:45,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:45,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:50:45,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:45,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:45,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:50:45,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:45,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:50:45,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:45,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:50:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:50:45,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:50:45,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:50:45,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:50:45,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:50:45,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:50:45,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:50:45,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:50:45,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:50:45,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:50:45,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:50:45,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:50:45,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:50:45,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985590292] [2020-10-29 03:50:45,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:50:45,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:50:45,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558971656] [2020-10-29 03:50:45,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:50:45,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:50:45,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:50:45,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:50:45,836 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 10 states. [2020-10-29 03:50:46,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:50:46,160 INFO L93 Difference]: Finished difference Result 69 states and 83 transitions. [2020-10-29 03:50:46,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:50:46,161 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-10-29 03:50:46,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:50:46,162 INFO L225 Difference]: With dead ends: 69 [2020-10-29 03:50:46,163 INFO L226 Difference]: Without dead ends: 57 [2020-10-29 03:50:46,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:50:46,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-29 03:50:46,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 42. [2020-10-29 03:50:46,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-29 03:50:46,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2020-10-29 03:50:46,174 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 28 [2020-10-29 03:50:46,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:50:46,175 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2020-10-29 03:50:46,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:50:46,175 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2020-10-29 03:50:46,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 03:50:46,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:50:46,176 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] [2020-10-29 03:50:46,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:50:46,176 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:50:46,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:50:46,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1894992585, now seen corresponding path program 1 times [2020-10-29 03:50:46,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:50:46,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913844929] [2020-10-29 03:50:46,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:50:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 03:50:46,195 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 03:50:46,195 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 03:50:46,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:50:46,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 03:50:46 BoogieIcfgContainer [2020-10-29 03:50:46,216 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 03:50:46,219 INFO L168 Benchmark]: Toolchain (without parser) took 4084.93 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 131.2 MB in the beginning and 147.0 MB in the end (delta: -15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. [2020-10-29 03:50:46,219 INFO L168 Benchmark]: CDTParser took 0.59 ms. Allocated memory is still 156.2 MB. Free memory is still 132.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 03:50:46,220 INFO L168 Benchmark]: CACSL2BoogieTranslator took 236.07 ms. Allocated memory is still 156.2 MB. Free memory was 130.5 MB in the beginning and 120.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-29 03:50:46,221 INFO L168 Benchmark]: Boogie Preprocessor took 34.46 ms. Allocated memory is still 156.2 MB. Free memory was 120.7 MB in the beginning and 119.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-29 03:50:46,222 INFO L168 Benchmark]: RCFGBuilder took 355.06 ms. Allocated memory is still 156.2 MB. Free memory was 119.1 MB in the beginning and 102.7 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-10-29 03:50:46,223 INFO L168 Benchmark]: TraceAbstraction took 3448.15 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 102.2 MB in the beginning and 147.0 MB in the end (delta: -44.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 03:50:46,226 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59 ms. Allocated memory is still 156.2 MB. Free memory is still 132.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 236.07 ms. Allocated memory is still 156.2 MB. Free memory was 130.5 MB in the beginning and 120.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.46 ms. Allocated memory is still 156.2 MB. Free memory was 120.7 MB in the beginning and 119.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 355.06 ms. Allocated memory is still 156.2 MB. Free memory was 119.1 MB in the beginning and 102.7 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3448.15 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 102.2 MB in the beginning and 147.0 MB in the end (delta: -44.8 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 [L31] COND TRUE i