/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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/indp1f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:15:49,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:15:49,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:15:49,255 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 00:15:49,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 00:15:49,259 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 00:15:49,263 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 00:15:49,271 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 00:15:49,274 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 00:15:49,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 00:15:49,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 00:15:49,283 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 00:15:49,284 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 00:15:49,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 00:15:49,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 00:15:49,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 00:15:49,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 00:15:49,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 00:15:49,305 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 00:15:49,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 00:15:49,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 00:15:49,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 00:15:49,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 00:15:49,320 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 00:15:49,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 00:15:49,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 00:15:49,342 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 00:15:49,344 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 00:15:49,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 00:15:49,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 00:15:49,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 00:15:49,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 00:15:49,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 00:15:49,350 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 00:15:49,351 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 00:15:49,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 00:15:49,352 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 00:15:49,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 00:15:49,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 00:15:49,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 00:15:49,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 00:15:49,355 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-24 00:15:49,381 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:15:49,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:15:49,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:15:49,386 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:15:49,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:15:49,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:15:49,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:15:49,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:15:49,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:15:49,387 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:15:49,388 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:15:49,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:15:49,388 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:15:49,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:15:49,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:15:49,389 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:15:49,389 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:15:49,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:15:49,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:15:49,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:15:49,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:15:49,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:15:49,391 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:15:49,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:15:49,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:15:49,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:15:49,839 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:15:49,840 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:15:49,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp1f.c [2021-02-24 00:15:49,924 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca2e0cf63/cee9266117fd48c39c8c77342a737cbd/FLAG1dd7aee84 [2021-02-24 00:15:50,612 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:15:50,613 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/indp1f.c [2021-02-24 00:15:50,621 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca2e0cf63/cee9266117fd48c39c8c77342a737cbd/FLAG1dd7aee84 [2021-02-24 00:15:50,971 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca2e0cf63/cee9266117fd48c39c8c77342a737cbd [2021-02-24 00:15:50,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:15:50,991 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:15:50,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:15:50,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:15:50,998 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:15:50,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:15:50" (1/1) ... [2021-02-24 00:15:51,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a6b6042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:51, skipping insertion in model container [2021-02-24 00:15:51,000 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:15:50" (1/1) ... [2021-02-24 00:15:51,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:15:51,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:15:51,179 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/indp1f.c[589,602] [2021-02-24 00:15:51,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:15:51,212 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:15:51,227 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/indp1f.c[589,602] [2021-02-24 00:15:51,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:15:51,256 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:15:51,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:51 WrapperNode [2021-02-24 00:15:51,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:15:51,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:15:51,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:15:51,259 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:15:51,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:51" (1/1) ... [2021-02-24 00:15:51,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:51" (1/1) ... [2021-02-24 00:15:51,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:51" (1/1) ... [2021-02-24 00:15:51,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:51" (1/1) ... [2021-02-24 00:15:51,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:51" (1/1) ... [2021-02-24 00:15:51,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:51" (1/1) ... [2021-02-24 00:15:51,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:51" (1/1) ... [2021-02-24 00:15:51,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:15:51,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:15:51,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:15:51,319 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:15:51,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2021-02-24 00:15:51,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:15:51,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:15:51,463 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:15:51,463 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 00:15:51,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:15:51,465 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:15:51,465 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:15:51,465 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:15:51,466 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:15:51,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:15:51,467 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 00:15:51,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:15:51,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 00:15:51,468 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 00:15:51,469 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:15:51,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 00:15:51,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:15:51,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:15:51,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:15:51,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:15:51,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:15:51,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:15:52,089 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:15:52,089 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-24 00:15:52,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:15:52 BoogieIcfgContainer [2021-02-24 00:15:52,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:15:52,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:15:52,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:15:52,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:15:52,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:15:50" (1/3) ... [2021-02-24 00:15:52,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26dbacba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:15:52, skipping insertion in model container [2021-02-24 00:15:52,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:51" (2/3) ... [2021-02-24 00:15:52,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26dbacba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:15:52, skipping insertion in model container [2021-02-24 00:15:52,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:15:52" (3/3) ... [2021-02-24 00:15:52,101 INFO L111 eAbstractionObserver]: Analyzing ICFG indp1f.c [2021-02-24 00:15:52,108 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:15:52,113 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:15:52,137 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:15:52,165 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:15:52,165 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:15:52,165 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:15:52,165 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:15:52,165 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:15:52,166 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:15:52,166 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:15:52,166 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:15:52,183 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2021-02-24 00:15:52,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-24 00:15:52,195 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:15:52,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:15:52,196 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:15:52,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:15:52,204 INFO L82 PathProgramCache]: Analyzing trace with hash -450027950, now seen corresponding path program 1 times [2021-02-24 00:15:52,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:15:52,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462587569] [2021-02-24 00:15:52,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:15:52,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:52,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:52,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:52,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:52,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:52,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:15:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:52,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:52,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:52,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 00:15:52,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:52,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:52,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:52,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:15:52,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462587569] [2021-02-24 00:15:52,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:15:52,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 00:15:52,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045843702] [2021-02-24 00:15:52,556 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 00:15:52,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:15:52,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 00:15:52,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 00:15:52,575 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 3 states. [2021-02-24 00:15:52,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:15:52,862 INFO L93 Difference]: Finished difference Result 115 states and 134 transitions. [2021-02-24 00:15:52,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 00:15:52,864 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2021-02-24 00:15:52,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:15:52,874 INFO L225 Difference]: With dead ends: 115 [2021-02-24 00:15:52,874 INFO L226 Difference]: Without dead ends: 61 [2021-02-24 00:15:52,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 00:15:52,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-02-24 00:15:52,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-02-24 00:15:52,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-02-24 00:15:52,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2021-02-24 00:15:52,934 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 38 [2021-02-24 00:15:52,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:15:52,935 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2021-02-24 00:15:52,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 00:15:52,936 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2021-02-24 00:15:52,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-24 00:15:52,937 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:15:52,937 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:15:52,938 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:15:52,938 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:15:52,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:15:52,939 INFO L82 PathProgramCache]: Analyzing trace with hash 549876134, now seen corresponding path program 1 times [2021-02-24 00:15:52,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:15:52,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631371586] [2021-02-24 00:15:52,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:15:52,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:53,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:53,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:53,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:53,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:15:53,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:53,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:15:53,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:53,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:53,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:15:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:53,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:53,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:53,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 00:15:53,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:53,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:53,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:53,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:15:53,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631371586] [2021-02-24 00:15:53,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:15:53,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 00:15:53,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984839410] [2021-02-24 00:15:53,160 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:15:53,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:15:53,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:15:53,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:15:53,162 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand 5 states. [2021-02-24 00:15:53,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:15:53,431 INFO L93 Difference]: Finished difference Result 113 states and 122 transitions. [2021-02-24 00:15:53,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 00:15:53,431 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2021-02-24 00:15:53,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:15:53,435 INFO L225 Difference]: With dead ends: 113 [2021-02-24 00:15:53,436 INFO L226 Difference]: Without dead ends: 83 [2021-02-24 00:15:53,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-24 00:15:53,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-02-24 00:15:53,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 64. [2021-02-24 00:15:53,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-02-24 00:15:53,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2021-02-24 00:15:53,458 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 38 [2021-02-24 00:15:53,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:15:53,459 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2021-02-24 00:15:53,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:15:53,459 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2021-02-24 00:15:53,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-02-24 00:15:53,461 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:15:53,462 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:15:53,462 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:15:53,462 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:15:53,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:15:53,463 INFO L82 PathProgramCache]: Analyzing trace with hash 2050387401, now seen corresponding path program 1 times [2021-02-24 00:15:53,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:15:53,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617665027] [2021-02-24 00:15:53,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:15:53,483 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-02-24 00:15:53,483 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-02-24 00:15:53,484 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 00:15:53,489 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:15:53,511 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-02-24 00:15:53,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:15:53 BoogieIcfgContainer [2021-02-24 00:15:53,512 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:15:53,515 INFO L168 Benchmark]: Toolchain (without parser) took 2534.59 ms. Allocated memory was 158.3 MB in the beginning and 202.4 MB in the end (delta: 44.0 MB). Free memory was 133.8 MB in the beginning and 155.2 MB in the end (delta: -21.4 MB). Peak memory consumption was 23.3 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:53,517 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 158.3 MB. Free memory is still 132.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:15:53,519 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.43 ms. Allocated memory is still 158.3 MB. Free memory was 132.7 MB in the beginning and 122.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:53,522 INFO L168 Benchmark]: Boogie Preprocessor took 56.64 ms. Allocated memory is still 158.3 MB. Free memory was 122.9 MB in the beginning and 121.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:53,525 INFO L168 Benchmark]: RCFGBuilder took 772.25 ms. Allocated memory is still 158.3 MB. Free memory was 121.2 MB in the beginning and 137.2 MB in the end (delta: -16.1 MB). Peak memory consumption was 19.8 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:53,532 INFO L168 Benchmark]: TraceAbstraction took 1419.77 ms. Allocated memory was 158.3 MB in the beginning and 202.4 MB in the end (delta: 44.0 MB). Free memory was 136.7 MB in the beginning and 155.2 MB in the end (delta: -18.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:53,540 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 158.3 MB. Free memory is still 132.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 264.43 ms. Allocated memory is still 158.3 MB. Free memory was 132.7 MB in the beginning and 122.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 56.64 ms. Allocated memory is still 158.3 MB. Free memory was 122.9 MB in the beginning and 121.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 772.25 ms. Allocated memory is still 158.3 MB. Free memory was 121.2 MB in the beginning and 137.2 MB in the end (delta: -16.1 MB). Peak memory consumption was 19.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1419.77 ms. Allocated memory was 158.3 MB in the beginning and 202.4 MB in the end (delta: 44.0 MB). Free memory was 136.7 MB in the beginning and 155.2 MB in the end (delta: -18.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is 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 FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L30] i=0 [L30] COND TRUE i