/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/sqm-if.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:19:29,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:19:29,300 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:19:29,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:19:29,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:19:29,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:19:29,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:19:29,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:19:29,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:19:29,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:19:29,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:19:29,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:19:29,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:19:29,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:19:29,361 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:19:29,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:19:29,367 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:19:29,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:19:29,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:19:29,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:19:29,383 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:19:29,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:19:29,392 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:19:29,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:19:29,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:19:29,412 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:19:29,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:19:29,416 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:19:29,417 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:19:29,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 09:19:29,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 09:19:29,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 09:19:29,423 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 09:19:29,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 09:19:29,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 09:19:29,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 09:19:29,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 09:19:29,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 09:19:29,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:19:29,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:19:29,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:19:29,432 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 [2020-10-28 09:19:29,496 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:19:29,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:19:29,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:19:29,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:19:29,500 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:19:29,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:19:29,500 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:19:29,501 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:19:29,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:19:29,504 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:19:29,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:19:29,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:19:29,505 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:19:29,505 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:19:29,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:19:29,506 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:19:29,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:19:29,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:19:29,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:19:29,534 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:19:29,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:19:29,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:19:29,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:19:29,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:19:29,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:19:29,536 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:19:29,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:19:29,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:19:29,537 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:19:29,537 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:19:30,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:19:30,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:19:30,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:19:30,068 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:19:30,069 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:19:30,071 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sqm-if.c [2020-10-28 09:19:30,162 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a59dccb31/69d1d7bcb8494a69b4af0e05d3fcf414/FLAGc4ad50214 [2020-10-28 09:19:30,841 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:19:30,842 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/sqm-if.c [2020-10-28 09:19:30,852 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a59dccb31/69d1d7bcb8494a69b4af0e05d3fcf414/FLAGc4ad50214 [2020-10-28 09:19:31,202 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a59dccb31/69d1d7bcb8494a69b4af0e05d3fcf414 [2020-10-28 09:19:31,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:19:31,218 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:19:31,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:19:31,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:19:31,228 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:19:31,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:19:31" (1/1) ... [2020-10-28 09:19:31,236 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cccbf65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:31, skipping insertion in model container [2020-10-28 09:19:31,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:19:31" (1/1) ... [2020-10-28 09:19:31,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:19:31,279 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:19:31,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:19:31,550 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:19:31,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:19:31,594 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:19:31,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:31 WrapperNode [2020-10-28 09:19:31,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:19:31,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:19:31,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:19:31,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:19:31,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:31" (1/1) ... [2020-10-28 09:19:31,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:31" (1/1) ... [2020-10-28 09:19:31,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:31" (1/1) ... [2020-10-28 09:19:31,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:31" (1/1) ... [2020-10-28 09:19:31,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:31" (1/1) ... [2020-10-28 09:19:31,636 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:31" (1/1) ... [2020-10-28 09:19:31,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:31" (1/1) ... [2020-10-28 09:19:31,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:19:31,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:19:31,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:19:31,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:19:31,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:31" (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 [2020-10-28 09:19:31,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:19:31,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:19:31,730 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:19:31,730 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 09:19:31,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 09:19:31,731 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:19:31,731 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:19:31,731 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:19:31,731 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:19:31,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:19:31,731 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 09:19:31,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 09:19:31,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 09:19:31,732 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 09:19:31,732 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:19:31,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 09:19:31,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:19:31,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:19:31,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:19:31,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:19:31,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:19:31,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:19:32,115 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:19:32,115 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 09:19:32,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:19:32 BoogieIcfgContainer [2020-10-28 09:19:32,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:19:32,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:19:32,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:19:32,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:19:32,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:19:31" (1/3) ... [2020-10-28 09:19:32,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd3d1cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:19:32, skipping insertion in model container [2020-10-28 09:19:32,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:19:31" (2/3) ... [2020-10-28 09:19:32,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd3d1cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:19:32, skipping insertion in model container [2020-10-28 09:19:32,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:19:32" (3/3) ... [2020-10-28 09:19:32,138 INFO L111 eAbstractionObserver]: Analyzing ICFG sqm-if.c [2020-10-28 09:19:32,166 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:19:32,178 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:19:32,196 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:19:32,245 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:19:32,245 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:19:32,245 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:19:32,246 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:19:32,246 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:19:32,246 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:19:32,246 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:19:32,246 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:19:32,266 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-10-28 09:19:32,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-28 09:19:32,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:19:32,274 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] [2020-10-28 09:19:32,275 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:19:32,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:19:32,282 INFO L82 PathProgramCache]: Analyzing trace with hash -996507287, now seen corresponding path program 1 times [2020-10-28 09:19:32,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:19:32,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25217726] [2020-10-28 09:19:32,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:19:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:19:32,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:19:32,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:19:32,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:19:32,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25217726] [2020-10-28 09:19:32,772 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-10-28 09:19:32,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:19:32,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-28 09:19:32,773 ERROR L205 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-10-28 09:19:32,774 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 09:19:32,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:19:32,798 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-28 09:19:32,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:19:32 BoogieIcfgContainer [2020-10-28 09:19:32,799 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 09:19:32,802 INFO L168 Benchmark]: Toolchain (without parser) took 1589.84 ms. Allocated memory is still 152.0 MB. Free memory was 128.1 MB in the beginning and 76.8 MB in the end (delta: 51.4 MB). Peak memory consumption was 51.4 MB. Max. memory is 8.0 GB. [2020-10-28 09:19:32,803 INFO L168 Benchmark]: CDTParser took 0.73 ms. Allocated memory is still 152.0 MB. Free memory is still 127.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 09:19:32,804 INFO L168 Benchmark]: CACSL2BoogieTranslator took 372.37 ms. Allocated memory is still 152.0 MB. Free memory was 127.1 MB in the beginning and 117.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-28 09:19:32,805 INFO L168 Benchmark]: Boogie Preprocessor took 45.97 ms. Allocated memory is still 152.0 MB. Free memory was 117.1 MB in the beginning and 115.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 09:19:32,806 INFO L168 Benchmark]: RCFGBuilder took 475.00 ms. Allocated memory is still 152.0 MB. Free memory was 115.6 MB in the beginning and 98.3 MB in the end (delta: 17.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-10-28 09:19:32,807 INFO L168 Benchmark]: TraceAbstraction took 678.96 ms. Allocated memory is still 152.0 MB. Free memory was 97.7 MB in the beginning and 76.8 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-28 09:19:32,811 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.73 ms. Allocated memory is still 152.0 MB. Free memory is still 127.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 372.37 ms. Allocated memory is still 152.0 MB. Free memory was 127.1 MB in the beginning and 117.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.97 ms. Allocated memory is still 152.0 MB. Free memory was 117.1 MB in the beginning and 115.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 475.00 ms. Allocated memory is still 152.0 MB. Free memory was 115.6 MB in the beginning and 98.3 MB in the end (delta: 17.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 678.96 ms. Allocated memory is still 152.0 MB. Free memory was 97.7 MB in the beginning and 76.8 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 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] long long i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] i=0 [L40] i=0 [L49] i=0 [L49] COND TRUE i