/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/brs3f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:32:54,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:32:54,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:32:54,876 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:32:54,877 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:32:54,886 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:32:54,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:32:54,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:32:54,895 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:32:54,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:32:54,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:32:54,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:32:54,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:32:54,903 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:32:54,906 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:32:54,908 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:32:54,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:32:54,911 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:32:54,912 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:32:54,921 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:32:54,923 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:32:54,924 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:32:54,925 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:32:54,926 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:32:54,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:32:54,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:32:54,943 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:32:54,944 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:32:54,945 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:32:54,946 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:32:54,946 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:32:54,952 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:32:54,953 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:32:54,954 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:32:54,955 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:32:54,955 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:32:54,956 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:32:54,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:32:54,957 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:32:54,958 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:32:54,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:32:54,961 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 19:32:55,005 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:32:55,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:32:55,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:32:55,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:32:55,008 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:32:55,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:32:55,008 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:32:55,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:32:55,009 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:32:55,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:32:55,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:32:55,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:32:55,010 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:32:55,011 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:32:55,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:32:55,011 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:32:55,011 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:32:55,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:32:55,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:32:55,012 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:32:55,012 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:32:55,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:32:55,013 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:32:55,013 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:32:55,013 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:32:55,013 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:32:55,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:32:55,014 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:32:55,014 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:32:55,014 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:32:55,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:32:55,485 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:32:55,489 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:32:55,492 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:32:55,493 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:32:55,494 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs3f.c [2020-09-24 19:32:55,592 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/762cef439/1996a2c054144b47986d47785b1a21cb/FLAGee81062bd [2020-09-24 19:32:56,141 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:32:56,142 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/brs3f.c [2020-09-24 19:32:56,150 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/762cef439/1996a2c054144b47986d47785b1a21cb/FLAGee81062bd [2020-09-24 19:32:56,485 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/762cef439/1996a2c054144b47986d47785b1a21cb [2020-09-24 19:32:56,502 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:32:56,512 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:32:56,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:32:56,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:32:56,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:32:56,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:32:56" (1/1) ... [2020-09-24 19:32:56,528 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16ba59b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:56, skipping insertion in model container [2020-09-24 19:32:56,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:32:56" (1/1) ... [2020-09-24 19:32:56,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:32:56,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:32:56,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:32:56,847 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:32:56,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:32:56,895 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:32:56,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:56 WrapperNode [2020-09-24 19:32:56,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:32:56,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:32:56,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:32:56,897 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:32:56,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:56" (1/1) ... [2020-09-24 19:32:56,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:56" (1/1) ... [2020-09-24 19:32:57,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:56" (1/1) ... [2020-09-24 19:32:57,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:56" (1/1) ... [2020-09-24 19:32:57,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:56" (1/1) ... [2020-09-24 19:32:57,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:56" (1/1) ... [2020-09-24 19:32:57,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:56" (1/1) ... [2020-09-24 19:32:57,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:32:57,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:32:57,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:32:57,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:32:57,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:32:57,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:32:57,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:32:57,108 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 19:32:57,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 19:32:57,108 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:32:57,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:32:57,109 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 19:32:57,109 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 19:32:57,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 19:32:57,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:32:57,109 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 19:32:57,110 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:32:57,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 19:32:57,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 19:32:57,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 19:32:57,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 19:32:57,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 19:32:57,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:32:57,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:32:57,489 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:32:57,489 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 19:32:57,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:32:57 BoogieIcfgContainer [2020-09-24 19:32:57,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:32:57,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:32:57,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:32:57,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:32:57,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:32:56" (1/3) ... [2020-09-24 19:32:57,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc6a160 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:32:57, skipping insertion in model container [2020-09-24 19:32:57,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:56" (2/3) ... [2020-09-24 19:32:57,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc6a160 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:32:57, skipping insertion in model container [2020-09-24 19:32:57,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:32:57" (3/3) ... [2020-09-24 19:32:57,506 INFO L109 eAbstractionObserver]: Analyzing ICFG brs3f.c [2020-09-24 19:32:57,516 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:32:57,527 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:32:57,549 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:32:57,579 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:32:57,579 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:32:57,579 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:32:57,580 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:32:57,580 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:32:57,580 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:32:57,580 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:32:57,580 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:32:57,603 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-09-24 19:32:57,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 19:32:57,612 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:32:57,613 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] [2020-09-24 19:32:57,614 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:32:57,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:32:57,620 INFO L82 PathProgramCache]: Analyzing trace with hash 221259408, now seen corresponding path program 1 times [2020-09-24 19:32:57,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:32:57,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653773484] [2020-09-24 19:32:57,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:32:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:57,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:57,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:58,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:32:58,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 19:32:58,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:32:58,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 410 [2020-09-24 19:32:58,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:32:58,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:32:58,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 19:32:58,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:32:58,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:32:58,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:32:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:58,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:58,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:32:58,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:32:58,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:32:58,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:32:58,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:32:58,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:32:58,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:32:58,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:32:58,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:32:58,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 19:32:58,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:58,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:58,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:32:58,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:32:58,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:32:58,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:32:58,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:32:58,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:32:58,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:32:58,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:32:58,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:32:58,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:32:58,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653773484] [2020-09-24 19:32:58,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:32:58,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 19:32:58,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847014484] [2020-09-24 19:32:58,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 19:32:58,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:32:58,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 19:32:58,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:32:58,376 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 3 states. [2020-09-24 19:32:58,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:32:58,538 INFO L93 Difference]: Finished difference Result 101 states and 116 transitions. [2020-09-24 19:32:58,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 19:32:58,540 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-09-24 19:32:58,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:32:58,552 INFO L225 Difference]: With dead ends: 101 [2020-09-24 19:32:58,552 INFO L226 Difference]: Without dead ends: 47 [2020-09-24 19:32:58,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:32:58,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-24 19:32:58,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-09-24 19:32:58,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-24 19:32:58,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2020-09-24 19:32:58,609 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 30 [2020-09-24 19:32:58,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:32:58,609 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2020-09-24 19:32:58,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 19:32:58,610 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2020-09-24 19:32:58,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 19:32:58,611 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:32:58,611 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] [2020-09-24 19:32:58,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:32:58,612 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:32:58,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:32:58,613 INFO L82 PathProgramCache]: Analyzing trace with hash -151091841, now seen corresponding path program 1 times [2020-09-24 19:32:58,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:32:58,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520808333] [2020-09-24 19:32:58,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:32:58,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:58,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:58,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:59,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:32:59,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 19:32:59,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:32:59,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 449 [2020-09-24 19:32:59,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:32:59,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:32:59,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 19:32:59,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 19:32:59,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:32:59,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:32:59,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:59,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:59,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:32:59,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:32:59,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:32:59,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:32:59,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:32:59,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:32:59,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:32:59,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:32:59,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:32:59,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 19:32:59,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:59,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:59,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:32:59,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:32:59,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:32:59,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 19:32:59,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:32:59,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:32:59,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:32:59,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:32:59,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:32:59,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:32:59,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520808333] [2020-09-24 19:32:59,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:32:59,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:32:59,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819286524] [2020-09-24 19:32:59,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:32:59,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:32:59,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:32:59,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:32:59,216 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand 5 states. [2020-09-24 19:32:59,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:32:59,380 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2020-09-24 19:32:59,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:32:59,381 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-24 19:32:59,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:32:59,383 INFO L225 Difference]: With dead ends: 67 [2020-09-24 19:32:59,383 INFO L226 Difference]: Without dead ends: 49 [2020-09-24 19:32:59,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:32:59,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-24 19:32:59,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-09-24 19:32:59,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-24 19:32:59,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-09-24 19:32:59,395 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 30 [2020-09-24 19:32:59,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:32:59,396 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-09-24 19:32:59,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:32:59,396 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-09-24 19:32:59,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 19:32:59,397 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:32:59,398 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] [2020-09-24 19:32:59,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:32:59,398 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:32:59,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:32:59,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1707000309, now seen corresponding path program 1 times [2020-09-24 19:32:59,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:32:59,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702487016] [2020-09-24 19:32:59,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:32:59,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:59,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:59,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:59,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:00,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:00,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:00,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 19:33:00,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:33:00,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-09-24 19:33:00,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:00,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:33:00,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 19:33:00,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 19:33:00,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:33:00,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:33:00,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:00,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:00,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:00,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:33:00,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:33:00,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:33:00,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:00,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:33:00,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:33:00,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:33:00,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:33:00,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 19:33:00,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:00,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:00,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:00,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:33:00,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:33:00,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:33:00,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:00,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:33:00,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:33:00,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:33:00,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:33:00,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:33:00,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702487016] [2020-09-24 19:33:00,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:33:00,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 19:33:00,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20662844] [2020-09-24 19:33:00,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:33:00,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:33:00,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:33:00,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:33:00,579 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 8 states. [2020-09-24 19:33:00,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:33:00,832 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-09-24 19:33:00,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 19:33:00,833 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-09-24 19:33:00,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:33:00,834 INFO L225 Difference]: With dead ends: 64 [2020-09-24 19:33:00,834 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 19:33:00,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:33:00,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 19:33:00,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-09-24 19:33:00,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-24 19:33:00,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2020-09-24 19:33:00,844 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 42 [2020-09-24 19:33:00,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:33:00,845 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2020-09-24 19:33:00,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:33:00,845 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2020-09-24 19:33:00,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 19:33:00,847 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:33:00,847 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] [2020-09-24 19:33:00,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:33:00,848 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:33:00,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:33:00,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1495951507, now seen corresponding path program 1 times [2020-09-24 19:33:00,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:33:00,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994117517] [2020-09-24 19:33:00,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:33:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:00,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:00,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:00,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:01,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:01,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 19:33:01,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:33:01,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 887 [2020-09-24 19:33:01,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:01,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:33:01,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 19:33:01,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 19:33:01,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:33:01,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:33:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:01,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:01,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:01,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:33:01,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:33:01,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:33:01,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:01,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:33:01,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:33:01,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:33:01,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:33:01,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 19:33:01,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:01,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:01,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:01,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:33:01,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:33:01,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:33:01,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:01,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:33:01,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:33:01,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:33:01,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:33:01,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:33:01,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994117517] [2020-09-24 19:33:01,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:33:01,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:33:01,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702215606] [2020-09-24 19:33:01,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:33:01,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:33:01,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:33:01,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:33:01,834 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 4 states. [2020-09-24 19:33:01,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:33:01,936 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2020-09-24 19:33:01,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 19:33:01,936 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-24 19:33:01,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:33:01,937 INFO L225 Difference]: With dead ends: 87 [2020-09-24 19:33:01,938 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 19:33:01,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:33:01,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 19:33:01,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2020-09-24 19:33:01,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 19:33:01,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2020-09-24 19:33:01,946 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 46 [2020-09-24 19:33:01,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:33:01,947 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2020-09-24 19:33:01,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:33:01,947 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2020-09-24 19:33:01,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 19:33:01,949 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:33:01,949 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:33:01,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:33:01,950 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:33:01,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:33:01,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1747495296, now seen corresponding path program 1 times [2020-09-24 19:33:01,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:33:01,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343951698] [2020-09-24 19:33:01,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:33:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:01,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:02,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:02,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:02,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:02,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:02,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:02,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:02,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 19:33:02,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:33:02,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:33:02,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:02,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:33:02,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 19:33:02,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 19:33:02,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:33:03,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:33:03,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:03,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:03,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:03,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:33:03,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:33:03,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:33:03,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:03,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:33:03,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:33:03,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:33:03,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:33:03,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 19:33:03,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:03,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:03,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:03,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:33:03,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:33:03,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:33:03,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:03,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:33:03,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:33:03,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:33:03,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 19:33:03,131 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:33:03,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343951698] [2020-09-24 19:33:03,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:33:03,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 19:33:03,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393583696] [2020-09-24 19:33:03,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 19:33:03,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:33:03,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 19:33:03,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-24 19:33:03,135 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 10 states. [2020-09-24 19:33:03,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:33:03,547 INFO L93 Difference]: Finished difference Result 93 states and 99 transitions. [2020-09-24 19:33:03,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 19:33:03,549 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-09-24 19:33:03,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:33:03,553 INFO L225 Difference]: With dead ends: 93 [2020-09-24 19:33:03,553 INFO L226 Difference]: Without dead ends: 64 [2020-09-24 19:33:03,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-09-24 19:33:03,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-24 19:33:03,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2020-09-24 19:33:03,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-24 19:33:03,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-09-24 19:33:03,572 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 52 [2020-09-24 19:33:03,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:33:03,575 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-09-24 19:33:03,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 19:33:03,576 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-09-24 19:33:03,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 19:33:03,581 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:33:03,581 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:33:03,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:33:03,585 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:33:03,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:33:03,586 INFO L82 PathProgramCache]: Analyzing trace with hash -557611095, now seen corresponding path program 1 times [2020-09-24 19:33:03,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:33:03,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168673583] [2020-09-24 19:33:03,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:33:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 19:33:03,625 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 19:33:03,626 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 19:33:03,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:33:03,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 07:33:03 BoogieIcfgContainer [2020-09-24 19:33:03,676 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 19:33:03,681 INFO L168 Benchmark]: Toolchain (without parser) took 7174.50 ms. Allocated memory was 140.5 MB in the beginning and 276.8 MB in the end (delta: 136.3 MB). Free memory was 102.6 MB in the beginning and 159.7 MB in the end (delta: -57.1 MB). Peak memory consumption was 79.2 MB. Max. memory is 7.1 GB. [2020-09-24 19:33:03,683 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 19:33:03,685 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.01 ms. Allocated memory is still 140.5 MB. Free memory was 102.0 MB in the beginning and 91.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-24 19:33:03,692 INFO L168 Benchmark]: Boogie Preprocessor took 135.11 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 91.6 MB in the beginning and 180.8 MB in the end (delta: -89.2 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-24 19:33:03,693 INFO L168 Benchmark]: RCFGBuilder took 463.57 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 161.9 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2020-09-24 19:33:03,694 INFO L168 Benchmark]: TraceAbstraction took 6179.17 ms. Allocated memory was 203.4 MB in the beginning and 276.8 MB in the end (delta: 73.4 MB). Free memory was 161.3 MB in the beginning and 159.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 75.0 MB. Max. memory is 7.1 GB. [2020-09-24 19:33:03,710 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 140.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 380.01 ms. Allocated memory is still 140.5 MB. Free memory was 102.0 MB in the beginning and 91.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.11 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 91.6 MB in the beginning and 180.8 MB in the end (delta: -89.2 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 463.57 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 161.9 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6179.17 ms. Allocated memory was 203.4 MB in the beginning and 276.8 MB in the end (delta: 73.4 MB). Free memory was 161.3 MB in the beginning and 159.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 75.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a 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] i=0 [L29] COND TRUE i