/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-fpi/pcompf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:39:16,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:39:16,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:39:16,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:39:16,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:39:16,507 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:39:16,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:39:16,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:39:16,518 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:39:16,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:39:16,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:39:16,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:39:16,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:39:16,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:39:16,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:39:16,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:39:16,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:39:16,563 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:39:16,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:39:16,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:39:16,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:39:16,572 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:39:16,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:39:16,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:39:16,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:39:16,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:39:16,589 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:39:16,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:39:16,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:39:16,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:39:16,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:39:16,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:39:16,597 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:39:16,598 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:39:16,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:39:16,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:39:16,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:39:16,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:39:16,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:39:16,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:39:16,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:39:16,614 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 [2020-10-27 14:39:16,671 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:39:16,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:39:16,677 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:39:16,677 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:39:16,677 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:39:16,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:39:16,678 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:39:16,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:39:16,678 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:39:16,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:39:16,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:39:16,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:39:16,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:39:16,681 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:39:16,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:39:16,681 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:39:16,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:39:16,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:39:16,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:39:16,682 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:39:16,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:39:16,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:39:16,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:39:16,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:39:16,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:39:16,683 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:39:16,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:39:16,684 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:39:16,684 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:39:16,684 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:39:17,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:39:17,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:39:17,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:39:17,285 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:39:17,285 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:39:17,286 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/pcompf.c [2020-10-27 14:39:17,352 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8aecc24d7/e1412078d0aa4c68ba42e2a52c10ef9a/FLAG4cd150a93 [2020-10-27 14:39:18,188 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:39:18,189 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/pcompf.c [2020-10-27 14:39:18,199 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8aecc24d7/e1412078d0aa4c68ba42e2a52c10ef9a/FLAG4cd150a93 [2020-10-27 14:39:18,513 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8aecc24d7/e1412078d0aa4c68ba42e2a52c10ef9a [2020-10-27 14:39:18,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:39:18,523 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:39:18,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:39:18,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:39:18,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:39:18,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:39:18" (1/1) ... [2020-10-27 14:39:18,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3470b7be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:39:18, skipping insertion in model container [2020-10-27 14:39:18,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:39:18" (1/1) ... [2020-10-27 14:39:18,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:39:18,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:39:18,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:39:18,819 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:39:18,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:39:18,860 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:39:18,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:39:18 WrapperNode [2020-10-27 14:39:18,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:39:18,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:39:18,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:39:18,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:39:18,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:39:18" (1/1) ... [2020-10-27 14:39:18,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:39:18" (1/1) ... [2020-10-27 14:39:18,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:39:18" (1/1) ... [2020-10-27 14:39:18,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:39:18" (1/1) ... [2020-10-27 14:39:18,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:39:18" (1/1) ... [2020-10-27 14:39:18,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:39:18" (1/1) ... [2020-10-27 14:39:18,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:39:18" (1/1) ... [2020-10-27 14:39:18,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:39:18,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:39:18,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:39:18,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:39:18,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:39:18" (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 [2020-10-27 14:39:19,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:39:19,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:39:19,006 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:39:19,007 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 14:39:19,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:39:19,008 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:39:19,008 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:39:19,008 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:39:19,008 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:39:19,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:39:19,010 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 14:39:19,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:39:19,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 14:39:19,010 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 14:39:19,010 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:39:19,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 14:39:19,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:39:19,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:39:19,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:39:19,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:39:19,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:39:19,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:39:19,624 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:39:19,625 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-27 14:39:19,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:39:19 BoogieIcfgContainer [2020-10-27 14:39:19,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:39:19,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:39:19,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:39:19,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:39:19,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:39:18" (1/3) ... [2020-10-27 14:39:19,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43092ef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:39:19, skipping insertion in model container [2020-10-27 14:39:19,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:39:18" (2/3) ... [2020-10-27 14:39:19,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43092ef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:39:19, skipping insertion in model container [2020-10-27 14:39:19,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:39:19" (3/3) ... [2020-10-27 14:39:19,646 INFO L111 eAbstractionObserver]: Analyzing ICFG pcompf.c [2020-10-27 14:39:19,661 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:39:19,668 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:39:19,684 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:39:19,731 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:39:19,731 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:39:19,731 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:39:19,731 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:39:19,731 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:39:19,731 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:39:19,732 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:39:19,732 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:39:19,756 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-10-27 14:39:19,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 14:39:19,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:39:19,768 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] [2020-10-27 14:39:19,769 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:39:19,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:39:19,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1041170357, now seen corresponding path program 1 times [2020-10-27 14:39:19,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:39:19,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276669345] [2020-10-27 14:39:19,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:39:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:19,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:20,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276669345] [2020-10-27 14:39:20,048 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-10-27 14:39:20,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:39:20,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-27 14:39:20,049 ERROR L205 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-10-27 14:39:20,050 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 14:39:20,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:39:20,075 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-27 14:39:20,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 02:39:20 BoogieIcfgContainer [2020-10-27 14:39:20,076 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 14:39:20,079 INFO L168 Benchmark]: Toolchain (without parser) took 1559.47 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 111.1 MB in the end (delta: 15.5 MB). Peak memory consumption was 16.2 MB. Max. memory is 8.0 GB. [2020-10-27 14:39:20,081 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory was 123.5 MB in the beginning and 123.4 MB in the end (delta: 74.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 14:39:20,082 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.50 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 116.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 14:39:20,083 INFO L168 Benchmark]: Boogie Preprocessor took 46.84 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 14:39:20,084 INFO L168 Benchmark]: RCFGBuilder took 718.37 ms. Allocated memory is still 151.0 MB. Free memory was 114.3 MB in the beginning and 126.9 MB in the end (delta: -12.6 MB). Peak memory consumption was 13.1 MB. Max. memory is 8.0 GB. [2020-10-27 14:39:20,085 INFO L168 Benchmark]: TraceAbstraction took 442.84 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 111.1 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-27 14:39:20,089 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory was 123.5 MB in the beginning and 123.4 MB in the end (delta: 74.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 334.50 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 116.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 46.84 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 718.37 ms. Allocated memory is still 151.0 MB. Free memory was 114.3 MB in the beginning and 126.9 MB in the end (delta: -12.6 MB). Peak memory consumption was 13.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 442.84 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 111.1 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: 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: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND TRUE !cond [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L30] long long *c = malloc(sizeof(long long)*N); [L32] a[0] = 6 [L33] b[0] = 1 [L34] c[0] = 0 [L36] i=1 [L36] COND FALSE !(i