/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/res1f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:19:50,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:19:50,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:19:50,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:19:50,371 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:19:50,372 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:19:50,374 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:19:50,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:19:50,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:19:50,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:19:50,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:19:50,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:19:50,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:19:50,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:19:50,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:19:50,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:19:50,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:19:50,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:19:50,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:19:50,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:19:50,393 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:19:50,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:19:50,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:19:50,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:19:50,400 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:19:50,400 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:19:50,400 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:19:50,401 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:19:50,402 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:19:50,403 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:19:50,403 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:19:50,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:19:50,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:19:50,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:19:50,407 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:19:50,407 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:19:50,408 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:19:50,408 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:19:50,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:19:50,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:19:50,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:19:50,412 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 17:19:50,443 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:19:50,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:19:50,445 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:19:50,445 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:19:50,445 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:19:50,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:19:50,446 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:19:50,446 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:19:50,446 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:19:50,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:19:50,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:19:50,447 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:19:50,447 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:19:50,447 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:19:50,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:19:50,447 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:19:50,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:19:50,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:19:50,448 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:19:50,448 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:19:50,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:19:50,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:19:50,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:19:50,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:19:50,449 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:19:50,450 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:19:50,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:19:50,450 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:19:50,450 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:19:50,450 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;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;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;log-additional-information=true; [2020-09-24 17:19:50,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:19:50,976 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:19:50,981 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:19:50,983 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:19:50,984 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:19:50,986 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res1f.c [2020-09-24 17:19:51,082 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54ea7ef06/21d3fc6fb0594180888e2870f0d161f7/FLAGad22ff34b [2020-09-24 17:19:51,650 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:19:51,651 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/res1f.c [2020-09-24 17:19:51,660 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54ea7ef06/21d3fc6fb0594180888e2870f0d161f7/FLAGad22ff34b [2020-09-24 17:19:51,994 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54ea7ef06/21d3fc6fb0594180888e2870f0d161f7 [2020-09-24 17:19:52,010 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:19:52,017 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:19:52,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:19:52,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:19:52,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:19:52,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:19:51" (1/1) ... [2020-09-24 17:19:52,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42dfe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:19:52, skipping insertion in model container [2020-09-24 17:19:52,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:19:51" (1/1) ... [2020-09-24 17:19:52,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:19:52,066 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:19:52,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:19:52,344 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:19:52,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:19:52,392 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:19:52,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:19:52 WrapperNode [2020-09-24 17:19:52,393 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:19:52,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:19:52,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:19:52,394 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:19:52,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:19:52" (1/1) ... [2020-09-24 17:19:52,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:19:52" (1/1) ... [2020-09-24 17:19:52,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:19:52" (1/1) ... [2020-09-24 17:19:52,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:19:52" (1/1) ... [2020-09-24 17:19:52,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:19:52" (1/1) ... [2020-09-24 17:19:52,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:19:52" (1/1) ... [2020-09-24 17:19:52,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:19:52" (1/1) ... [2020-09-24 17:19:52,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:19:52,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:19:52,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:19:52,519 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:19:52,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:19:52" (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 [2020-09-24 17:19:52,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:19:52,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:19:52,597 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 17:19:52,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 17:19:52,597 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:19:52,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:19:52,597 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 17:19:52,598 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 17:19:52,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 17:19:52,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:19:52,598 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 17:19:52,598 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:19:52,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 17:19:52,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 17:19:52,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 17:19:52,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 17:19:52,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 17:19:52,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:19:52,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:19:52,964 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:19:52,965 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-24 17:19:52,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:19:52 BoogieIcfgContainer [2020-09-24 17:19:52,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:19:52,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:19:52,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:19:52,976 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:19:52,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:19:51" (1/3) ... [2020-09-24 17:19:52,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72e4b700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:19:52, skipping insertion in model container [2020-09-24 17:19:52,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:19:52" (2/3) ... [2020-09-24 17:19:52,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72e4b700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:19:52, skipping insertion in model container [2020-09-24 17:19:52,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:19:52" (3/3) ... [2020-09-24 17:19:52,980 INFO L109 eAbstractionObserver]: Analyzing ICFG res1f.c [2020-09-24 17:19:52,992 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:19:53,006 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:19:53,036 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:19:53,076 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:19:53,077 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:19:53,077 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:19:53,077 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:19:53,077 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:19:53,077 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:19:53,077 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:19:53,077 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:19:53,102 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-09-24 17:19:53,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-24 17:19:53,110 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:19:53,111 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] [2020-09-24 17:19:53,112 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:19:53,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:19:53,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1226656927, now seen corresponding path program 1 times [2020-09-24 17:19:53,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:19:53,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985879550] [2020-09-24 17:19:53,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:19:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:19:53,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:53,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:53,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:53,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:54,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:54,805 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:19:54,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 17:19:54,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 17:19:54,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1512 [2020-09-24 17:19:54,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:19:54,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:19:54,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 17:19:54,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 17:19:54,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:19:54,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:19:54,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:19:54,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:54,980 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:19:54,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:19:54,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:19:54,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 17:19:54,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:19:54,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:19:54,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:19:54,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:19:54,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:19:54,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 17:19:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:19:55,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:55,030 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:19:55,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:19:55,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:19:55,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 17:19:55,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:19:55,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:19:55,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:19:55,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:19:55,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:19:55,049 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 17:19:55,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985879550] [2020-09-24 17:19:55,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:19:55,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 17:19:55,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234308740] [2020-09-24 17:19:55,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 17:19:55,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:19:55,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 17:19:55,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 17:19:55,095 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 5 states. [2020-09-24 17:19:55,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:19:55,562 INFO L93 Difference]: Finished difference Result 139 states and 165 transitions. [2020-09-24 17:19:55,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 17:19:55,565 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-09-24 17:19:55,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:19:55,582 INFO L225 Difference]: With dead ends: 139 [2020-09-24 17:19:55,583 INFO L226 Difference]: Without dead ends: 66 [2020-09-24 17:19:55,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 17:19:55,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-24 17:19:55,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-24 17:19:55,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-24 17:19:55,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2020-09-24 17:19:55,659 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 37 [2020-09-24 17:19:55,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:19:55,660 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2020-09-24 17:19:55,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 17:19:55,661 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2020-09-24 17:19:55,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-24 17:19:55,664 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:19:55,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:19:55,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:19:55,666 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:19:55,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:19:55,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1623654441, now seen corresponding path program 1 times [2020-09-24 17:19:55,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:19:55,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263931955] [2020-09-24 17:19:55,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:19:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 17:19:55,728 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 17:19:55,728 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 17:19:55,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:19:55,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 05:19:55 BoogieIcfgContainer [2020-09-24 17:19:55,768 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 17:19:55,772 INFO L168 Benchmark]: Toolchain (without parser) took 3758.01 ms. Allocated memory was 138.9 MB in the beginning and 233.3 MB in the end (delta: 94.4 MB). Free memory was 101.7 MB in the beginning and 138.9 MB in the end (delta: -37.2 MB). Peak memory consumption was 57.1 MB. Max. memory is 7.1 GB. [2020-09-24 17:19:55,776 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 17:19:55,777 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.21 ms. Allocated memory is still 138.9 MB. Free memory was 101.1 MB in the beginning and 90.5 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-09-24 17:19:55,779 INFO L168 Benchmark]: Boogie Preprocessor took 124.88 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 90.5 MB in the beginning and 179.1 MB in the end (delta: -88.6 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-09-24 17:19:55,780 INFO L168 Benchmark]: RCFGBuilder took 451.68 ms. Allocated memory is still 201.9 MB. Free memory was 179.1 MB in the beginning and 157.7 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-09-24 17:19:55,782 INFO L168 Benchmark]: TraceAbstraction took 2796.15 ms. Allocated memory was 201.9 MB in the beginning and 233.3 MB in the end (delta: 31.5 MB). Free memory was 157.7 MB in the beginning and 138.9 MB in the end (delta: 18.8 MB). Peak memory consumption was 50.2 MB. Max. memory is 7.1 GB. [2020-09-24 17:19:55,792 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 375.21 ms. Allocated memory is still 138.9 MB. Free memory was 101.1 MB in the beginning and 90.5 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.88 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 90.5 MB in the beginning and 179.1 MB in the end (delta: -88.6 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 451.68 ms. Allocated memory is still 201.9 MB. Free memory was 179.1 MB in the beginning and 157.7 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2796.15 ms. Allocated memory was 201.9 MB in the beginning and 233.3 MB in the end (delta: 31.5 MB). Free memory was 157.7 MB in the beginning and 138.9 MB in the end (delta: 18.8 MB). Peak memory consumption was 50.2 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); [L28] int *b = malloc(sizeof(int)*N); [L30] sum[0] = 1 [L31] i=0 [L31] COND TRUE i