/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 produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --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/eqn3f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:30:24,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:30:24,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:30:24,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:30:24,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:30:24,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:30:24,502 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:30:24,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:30:24,508 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:30:24,512 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:30:24,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:30:24,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:30:24,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:30:24,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:30:24,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:30:24,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:30:24,527 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:30:24,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:30:24,530 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:30:24,541 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:30:24,543 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:30:24,545 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:30:24,546 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:30:24,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:30:24,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:30:24,550 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:30:24,551 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:30:24,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:30:24,556 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:30:24,557 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:30:24,557 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:30:24,558 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:30:24,559 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:30:24,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:30:24,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:30:24,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:30:24,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:30:24,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:30:24,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:30:24,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:30:24,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:30:24,568 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 [2020-09-21 11:30:24,624 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:30:24,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:30:24,627 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:30:24,627 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:30:24,628 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:30:24,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:30:24,628 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:30:24,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:30:24,629 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:30:24,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:30:24,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:30:24,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:30:24,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:30:24,631 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:30:24,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:30:24,632 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:30:24,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:30:24,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:30:24,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:30:24,632 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:30:24,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:30:24,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:30:24,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:30:24,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:30:24,634 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:30:24,634 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:30:24,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:30:24,634 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:30:24,634 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:30:24,635 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 -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:30:25,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:30:25,096 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:30:25,100 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:30:25,102 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:30:25,102 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:30:25,103 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/eqn3f.c [2020-09-21 11:30:25,179 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cce1b5058/aac39a2fe855426096de05c0c331405a/FLAGd1c09a786 [2020-09-21 11:30:25,716 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:30:25,717 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/eqn3f.c [2020-09-21 11:30:25,726 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cce1b5058/aac39a2fe855426096de05c0c331405a/FLAGd1c09a786 [2020-09-21 11:30:26,052 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cce1b5058/aac39a2fe855426096de05c0c331405a [2020-09-21 11:30:26,065 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:30:26,071 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:30:26,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:30:26,072 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:30:26,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:30:26,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:30:26" (1/1) ... [2020-09-21 11:30:26,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5253b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:26, skipping insertion in model container [2020-09-21 11:30:26,083 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:30:26" (1/1) ... [2020-09-21 11:30:26,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:30:26,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:30:26,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:30:26,361 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:30:26,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:30:26,401 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:30:26,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:26 WrapperNode [2020-09-21 11:30:26,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:30:26,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:30:26,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:30:26,403 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:30:26,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:26" (1/1) ... [2020-09-21 11:30:26,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:26" (1/1) ... [2020-09-21 11:30:26,506 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:26" (1/1) ... [2020-09-21 11:30:26,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:26" (1/1) ... [2020-09-21 11:30:26,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:26" (1/1) ... [2020-09-21 11:30:26,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:26" (1/1) ... [2020-09-21 11:30:26,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:26" (1/1) ... [2020-09-21 11:30:26,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:30:26,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:30:26,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:30:26,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:30:26,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:26" (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 [2020-09-21 11:30:26,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:30:26,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:30:26,611 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 11:30:26,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 11:30:26,611 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:30:26,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:30:26,612 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 11:30:26,612 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 11:30:26,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 11:30:26,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:30:26,612 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 11:30:26,613 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:30:26,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 11:30:26,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:30:26,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:30:26,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:30:26,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:30:26,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:30:26,968 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:30:26,969 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-21 11:30:26,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:30:26 BoogieIcfgContainer [2020-09-21 11:30:26,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:30:26,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:30:26,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:30:26,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:30:26,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:30:26" (1/3) ... [2020-09-21 11:30:26,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a97db01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:30:26, skipping insertion in model container [2020-09-21 11:30:26,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:26" (2/3) ... [2020-09-21 11:30:26,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a97db01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:30:26, skipping insertion in model container [2020-09-21 11:30:26,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:30:26" (3/3) ... [2020-09-21 11:30:26,984 INFO L109 eAbstractionObserver]: Analyzing ICFG eqn3f.c [2020-09-21 11:30:27,004 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:30:27,015 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:30:27,038 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:30:27,066 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:30:27,066 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:30:27,067 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:30:27,067 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:30:27,067 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:30:27,067 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:30:27,067 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:30:27,067 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:30:27,089 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-09-21 11:30:27,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-21 11:30:27,097 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:30:27,098 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] [2020-09-21 11:30:27,098 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:30:27,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:30:27,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1314760119, now seen corresponding path program 1 times [2020-09-21 11:30:27,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:30:27,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171841125] [2020-09-21 11:30:27,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:30:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:30:27,260 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:30:27,261 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:30:27,261 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:30:27,261 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:30:27,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 11:30:27,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:30:27,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:30:27,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:30:27,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:30:27,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 11:30:27,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:30:27,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:30:27,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:30:27,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:30:27,345 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:30:27,345 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:30:27,346 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:30:27,346 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:30:27,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:30:27,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:30:27,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:30:27,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:30:27,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:30:27,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:30:27,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:30:27,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:30:27,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:30:27,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:30:27,377 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:30:27,377 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:30:27,377 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:30:27,378 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:30:27,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:30:27,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:30:27,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:30:27,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:30:27,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:30:27,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:30:27,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:30:27,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:30:27,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:30:27,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171841125] [2020-09-21 11:30:27,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:30:27,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:30:27,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134468520] [2020-09-21 11:30:27,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:30:27,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:30:27,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:30:27,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:30:27,422 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-09-21 11:30:27,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:30:27,550 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2020-09-21 11:30:27,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:30:27,553 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-09-21 11:30:27,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:30:27,564 INFO L225 Difference]: With dead ends: 58 [2020-09-21 11:30:27,565 INFO L226 Difference]: Without dead ends: 29 [2020-09-21 11:30:27,569 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 [2020-09-21 11:30:27,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-09-21 11:30:27,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-09-21 11:30:27,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-09-21 11:30:27,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-09-21 11:30:27,617 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2020-09-21 11:30:27,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:30:27,617 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-09-21 11:30:27,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:30:27,618 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-09-21 11:30:27,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-21 11:30:27,619 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:30:27,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:30:27,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:30:27,620 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:30:27,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:30:27,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1901566133, now seen corresponding path program 1 times [2020-09-21 11:30:27,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:30:27,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302269600] [2020-09-21 11:30:27,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:30:27,675 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-21 11:30:27,676 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-21 11:30:27,676 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:30:27,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:30:27,698 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-21 11:30:27,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:30:27 BoogieIcfgContainer [2020-09-21 11:30:27,699 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:30:27,702 INFO L168 Benchmark]: Toolchain (without parser) took 1633.72 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 105.0 MB in the beginning and 128.7 MB in the end (delta: -23.7 MB). Peak memory consumption was 39.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:30:27,703 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-21 11:30:27,705 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.52 ms. Allocated memory is still 141.6 MB. Free memory was 104.4 MB in the beginning and 94.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:30:27,706 INFO L168 Benchmark]: Boogie Preprocessor took 129.21 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 94.1 MB in the beginning and 182.5 MB in the end (delta: -88.5 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-21 11:30:27,707 INFO L168 Benchmark]: RCFGBuilder took 441.62 ms. Allocated memory is still 204.5 MB. Free memory was 182.5 MB in the beginning and 165.4 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:30:27,708 INFO L168 Benchmark]: TraceAbstraction took 723.37 ms. Allocated memory is still 204.5 MB. Free memory was 164.8 MB in the beginning and 128.7 MB in the end (delta: 36.0 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:30:27,712 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 330.52 ms. Allocated memory is still 141.6 MB. Free memory was 104.4 MB in the beginning and 94.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.21 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 94.1 MB in the beginning and 182.5 MB in the end (delta: -88.5 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 441.62 ms. Allocated memory is still 204.5 MB. Free memory was 182.5 MB in the beginning and 165.4 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 723.37 ms. Allocated memory is still 204.5 MB. Free memory was 164.8 MB in the beginning and 128.7 MB in the end (delta: 36.0 MB). Peak memory consumption was 36.0 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 *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L29] a[0] = 6 [L30] b[0] = 10 [L32] i=1 [L32] COND FALSE !(i