/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ss1f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 06:07:18,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:07:18,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:07:18,387 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:07:18,387 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:07:18,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:07:18,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:07:18,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:07:18,393 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:07:18,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:07:18,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:07:18,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:07:18,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:07:18,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:07:18,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:07:18,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:07:18,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:07:18,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:07:18,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:07:18,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:07:18,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:07:18,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:07:18,410 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:07:18,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:07:18,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 06:07:18,420 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 06:07:18,421 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 06:07:18,423 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 06:07:18,423 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 06:07:18,424 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 06:07:18,426 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 06:07:18,427 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 06:07:18,429 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 06:07:18,430 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 06:07:18,433 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 06:07:18,433 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 06:07:18,434 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 06:07:18,434 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 06:07:18,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:07:18,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:07:18,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:07:18,438 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 [2020-08-19 06:07:18,490 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:07:18,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:07:18,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:07:18,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:07:18,495 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:07:18,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:07:18,496 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:07:18,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:07:18,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:07:18,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:07:18,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:07:18,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:07:18,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:07:18,497 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:07:18,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:07:18,498 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:07:18,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:07:18,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:07:18,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:07:18,498 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:07:18,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:07:18,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:07:18,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:07:18,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:07:18,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:07:18,501 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:07:18,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:07:18,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:07:18,502 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:07:18,502 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=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; [2020-08-19 06:07:18,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:07:18,842 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:07:18,848 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:07:18,849 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:07:18,850 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:07:18,850 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss1f.c [2020-08-19 06:07:18,912 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c64d0354/9203fe13a16d45aba8317a04a3415207/FLAGa85a4a647 [2020-08-19 06:07:19,360 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:07:19,361 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ss1f.c [2020-08-19 06:07:19,366 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c64d0354/9203fe13a16d45aba8317a04a3415207/FLAGa85a4a647 [2020-08-19 06:07:19,724 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c64d0354/9203fe13a16d45aba8317a04a3415207 [2020-08-19 06:07:19,734 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:07:19,735 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:07:19,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:07:19,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:07:19,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:07:19,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:07:19" (1/1) ... [2020-08-19 06:07:19,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@436f0f4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:19, skipping insertion in model container [2020-08-19 06:07:19,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:07:19" (1/1) ... [2020-08-19 06:07:19,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:07:19,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:07:19,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:07:19,982 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:07:20,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:07:20,021 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:07:20,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:20 WrapperNode [2020-08-19 06:07:20,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:07:20,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:07:20,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:07:20,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:07:20,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:20" (1/1) ... [2020-08-19 06:07:20,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:20" (1/1) ... [2020-08-19 06:07:20,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:20" (1/1) ... [2020-08-19 06:07:20,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:20" (1/1) ... [2020-08-19 06:07:20,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:20" (1/1) ... [2020-08-19 06:07:20,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:20" (1/1) ... [2020-08-19 06:07:20,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:20" (1/1) ... [2020-08-19 06:07:20,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:07:20,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:07:20,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:07:20,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:07:20,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:20" (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 [2020-08-19 06:07:20,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:07:20,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:07:20,195 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 06:07:20,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 06:07:20,195 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:07:20,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:07:20,196 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 06:07:20,197 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 06:07:20,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 06:07:20,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 06:07:20,198 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 06:07:20,198 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:07:20,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 06:07:20,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 06:07:20,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 06:07:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 06:07:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 06:07:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:07:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:07:20,565 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:07:20,566 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-19 06:07:20,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:07:20 BoogieIcfgContainer [2020-08-19 06:07:20,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:07:20,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:07:20,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:07:20,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:07:20,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:07:19" (1/3) ... [2020-08-19 06:07:20,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cb5421e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:07:20, skipping insertion in model container [2020-08-19 06:07:20,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:20" (2/3) ... [2020-08-19 06:07:20,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cb5421e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:07:20, skipping insertion in model container [2020-08-19 06:07:20,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:07:20" (3/3) ... [2020-08-19 06:07:20,579 INFO L109 eAbstractionObserver]: Analyzing ICFG ss1f.c [2020-08-19 06:07:20,590 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:07:20,598 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:07:20,615 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:07:20,635 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:07:20,635 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:07:20,635 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:07:20,635 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:07:20,635 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:07:20,635 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:07:20,635 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:07:20,636 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:07:20,652 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-08-19 06:07:20,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-19 06:07:20,658 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:07:20,659 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] [2020-08-19 06:07:20,659 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:07:20,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:07:20,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1562148239, now seen corresponding path program 1 times [2020-08-19 06:07:20,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:07:20,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560878944] [2020-08-19 06:07:20,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:07:20,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:07:20,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:07:20,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:07:20,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 06:07:20,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:07:20,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:07:20,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [560878944] [2020-08-19 06:07:20,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:07:20,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:07:20,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142260519] [2020-08-19 06:07:20,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:07:20,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:07:20,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:07:20,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:07:20,886 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-08-19 06:07:21,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:07:21,029 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-08-19 06:07:21,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:07:21,031 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-08-19 06:07:21,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:07:21,041 INFO L225 Difference]: With dead ends: 64 [2020-08-19 06:07:21,041 INFO L226 Difference]: Without dead ends: 30 [2020-08-19 06:07:21,045 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 [2020-08-19 06:07:21,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-19 06:07:21,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-08-19 06:07:21,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-19 06:07:21,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-08-19 06:07:21,095 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2020-08-19 06:07:21,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:07:21,096 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-08-19 06:07:21,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:07:21,096 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-08-19 06:07:21,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-19 06:07:21,097 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:07:21,098 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] [2020-08-19 06:07:21,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:07:21,099 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:07:21,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:07:21,100 INFO L82 PathProgramCache]: Analyzing trace with hash 369304979, now seen corresponding path program 1 times [2020-08-19 06:07:21,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:07:21,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297463808] [2020-08-19 06:07:21,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:07:21,126 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-19 06:07:21,127 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-19 06:07:21,127 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 06:07:21,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:07:21,150 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-19 06:07:21,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 06:07:21 BoogieIcfgContainer [2020-08-19 06:07:21,150 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 06:07:21,153 INFO L168 Benchmark]: Toolchain (without parser) took 1416.85 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 103.3 MB in the beginning and 129.8 MB in the end (delta: -26.5 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. [2020-08-19 06:07:21,154 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.6 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-19 06:07:21,156 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.02 ms. Allocated memory is still 140.5 MB. Free memory was 103.3 MB in the beginning and 92.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-08-19 06:07:21,157 INFO L168 Benchmark]: Boogie Preprocessor took 116.57 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 92.7 MB in the beginning and 180.8 MB in the end (delta: -88.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-08-19 06:07:21,158 INFO L168 Benchmark]: RCFGBuilder took 430.68 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 161.7 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2020-08-19 06:07:21,159 INFO L168 Benchmark]: TraceAbstraction took 578.56 ms. Allocated memory is still 203.4 MB. Free memory was 161.7 MB in the beginning and 129.8 MB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 7.1 GB. [2020-08-19 06:07:21,163 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.6 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 286.02 ms. Allocated memory is still 140.5 MB. Free memory was 103.3 MB in the beginning and 92.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.57 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 92.7 MB in the beginning and 180.8 MB in the end (delta: -88.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 430.68 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 161.7 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 578.56 ms. Allocated memory is still 203.4 MB. Free memory was 161.7 MB in the beginning and 129.8 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