/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --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/ss1f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 15:50:50,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:50:50,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:50:50,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 15:50:50,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 15:50:51,012 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 15:50:51,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 15:50:51,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 15:50:51,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 15:50:51,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 15:50:51,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 15:50:51,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 15:50:51,026 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:50:51,030 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:50:51,033 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:50:51,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:50:51,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:50:51,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:50:51,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:50:51,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:50:51,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:50:51,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:50:51,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:50:51,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:50:51,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 15:50:51,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 15:50:51,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 15:50:51,063 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 15:50:51,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 15:50:51,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 15:50:51,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 15:50:51,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 15:50:51,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 15:50:51,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 15:50:51,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 15:50:51,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 15:50:51,071 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 15:50:51,071 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 15:50:51,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:50:51,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:50:51,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:50:51,074 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 [2020-08-21 15:50:51,119 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:50:51,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:50:51,122 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:50:51,122 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:50:51,122 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:50:51,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:50:51,123 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:50:51,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:50:51,123 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:50:51,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:50:51,125 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:50:51,125 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:50:51,125 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:50:51,126 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:50:51,126 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:50:51,126 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:50:51,126 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:50:51,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:50:51,127 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:50:51,127 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:50:51,127 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:50:51,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:50:51,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:50:51,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:50:51,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:50:51,128 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:50:51,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:50:51,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:50:51,128 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:50:51,129 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 15:50:51,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:50:51,423 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:50:51,426 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:50:51,428 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:50:51,428 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:50:51,429 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss1f.c [2020-08-21 15:50:51,492 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba8d43138/5b2d29d91abc4c61908d9f2e0fa8f187/FLAG527795f64 [2020-08-21 15:50:51,960 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:50:51,961 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ss1f.c [2020-08-21 15:50:51,968 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba8d43138/5b2d29d91abc4c61908d9f2e0fa8f187/FLAG527795f64 [2020-08-21 15:50:52,292 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba8d43138/5b2d29d91abc4c61908d9f2e0fa8f187 [2020-08-21 15:50:52,302 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:50:52,304 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:50:52,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:50:52,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:50:52,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:50:52,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:50:52" (1/1) ... [2020-08-21 15:50:52,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@493f7546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:50:52, skipping insertion in model container [2020-08-21 15:50:52,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:50:52" (1/1) ... [2020-08-21 15:50:52,321 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:50:52,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:50:52,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:50:52,542 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:50:52,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:50:52,580 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:50:52,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:50:52 WrapperNode [2020-08-21 15:50:52,581 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:50:52,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:50:52,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:50:52,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:50:52,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:50:52" (1/1) ... [2020-08-21 15:50:52,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:50:52" (1/1) ... [2020-08-21 15:50:52,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:50:52" (1/1) ... [2020-08-21 15:50:52,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:50:52" (1/1) ... [2020-08-21 15:50:52,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:50:52" (1/1) ... [2020-08-21 15:50:52,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:50:52" (1/1) ... [2020-08-21 15:50:52,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:50:52" (1/1) ... [2020-08-21 15:50:52,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:50:52,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:50:52,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:50:52,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:50:52,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:50:52" (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 [2020-08-21 15:50:52,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:50:52,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:50:52,770 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 15:50:52,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 15:50:52,770 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:50:52,770 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:50:52,771 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 15:50:52,771 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 15:50:52,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 15:50:52,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 15:50:52,772 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 15:50:52,772 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:50:52,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 15:50:52,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 15:50:52,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 15:50:52,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 15:50:52,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 15:50:52,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:50:52,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:50:53,051 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:50:53,051 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-21 15:50:53,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:50:53 BoogieIcfgContainer [2020-08-21 15:50:53,057 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:50:53,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:50:53,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:50:53,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:50:53,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:50:52" (1/3) ... [2020-08-21 15:50:53,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3417df10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:50:53, skipping insertion in model container [2020-08-21 15:50:53,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:50:52" (2/3) ... [2020-08-21 15:50:53,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3417df10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:50:53, skipping insertion in model container [2020-08-21 15:50:53,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:50:53" (3/3) ... [2020-08-21 15:50:53,067 INFO L109 eAbstractionObserver]: Analyzing ICFG ss1f.c [2020-08-21 15:50:53,085 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:50:53,109 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 15:50:53,143 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 15:50:53,175 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:50:53,175 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:50:53,175 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:50:53,176 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:50:53,176 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:50:53,176 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:50:53,176 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:50:53,176 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:50:53,193 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-08-21 15:50:53,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-21 15:50:53,199 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:50:53,200 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] [2020-08-21 15:50:53,200 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:50:53,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:50:53,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1562148239, now seen corresponding path program 1 times [2020-08-21 15:50:53,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:50:53,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119334699] [2020-08-21 15:50:53,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:50:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:50:53,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:50:53,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:50:53,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 15:50:53,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:50:53,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:50:53,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [119334699] [2020-08-21 15:50:53,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:50:53,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:50:53,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129208286] [2020-08-21 15:50:53,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:50:53,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:50:53,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:50:53,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:50:53,449 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-08-21 15:50:53,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:50:53,567 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-08-21 15:50:53,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:50:53,569 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-08-21 15:50:53,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:50:53,578 INFO L225 Difference]: With dead ends: 64 [2020-08-21 15:50:53,579 INFO L226 Difference]: Without dead ends: 30 [2020-08-21 15:50:53,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:50:53,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-21 15:50:53,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-08-21 15:50:53,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-21 15:50:53,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-08-21 15:50:53,628 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2020-08-21 15:50:53,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:50:53,629 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-08-21 15:50:53,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:50:53,629 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-08-21 15:50:53,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-21 15:50:53,630 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:50:53,631 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] [2020-08-21 15:50:53,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:50:53,631 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:50:53,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:50:53,632 INFO L82 PathProgramCache]: Analyzing trace with hash 369304979, now seen corresponding path program 1 times [2020-08-21 15:50:53,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:50:53,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1368459080] [2020-08-21 15:50:53,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:50:53,657 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-21 15:50:53,658 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-21 15:50:53,658 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 15:50:53,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:50:53,680 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-21 15:50:53,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 03:50:53 BoogieIcfgContainer [2020-08-21 15:50:53,681 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 15:50:53,684 INFO L168 Benchmark]: Toolchain (without parser) took 1379.18 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 104.6 MB in the beginning and 130.8 MB in the end (delta: -26.3 MB). Peak memory consumption was 37.2 MB. Max. memory is 7.1 GB. [2020-08-21 15:50:53,685 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-21 15:50:53,686 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.04 ms. Allocated memory is still 141.0 MB. Free memory was 104.3 MB in the beginning and 93.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-08-21 15:50:53,687 INFO L168 Benchmark]: Boogie Preprocessor took 129.62 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 93.3 MB in the beginning and 181.8 MB in the end (delta: -88.5 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-08-21 15:50:53,688 INFO L168 Benchmark]: RCFGBuilder took 346.30 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 163.4 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. [2020-08-21 15:50:53,689 INFO L168 Benchmark]: TraceAbstraction took 621.60 ms. Allocated memory is still 204.5 MB. Free memory was 162.8 MB in the beginning and 130.8 MB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 7.1 GB. [2020-08-21 15:50:53,693 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 276.04 ms. Allocated memory is still 141.0 MB. Free memory was 104.3 MB in the beginning and 93.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.62 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 93.3 MB in the beginning and 181.8 MB in the end (delta: -88.5 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 346.30 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 163.4 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 621.60 ms. Allocated memory is still 204.5 MB. Free memory was 162.8 MB in the beginning and 130.8 MB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] long long *a = malloc(sizeof(long long)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND FALSE !(i