/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/modsf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 01:56:22,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 01:56:22,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 01:56:22,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 01:56:22,155 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 01:56:22,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 01:56:22,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 01:56:22,161 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 01:56:22,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 01:56:22,164 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 01:56:22,165 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 01:56:22,167 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 01:56:22,167 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 01:56:22,169 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 01:56:22,170 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 01:56:22,171 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 01:56:22,172 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 01:56:22,173 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 01:56:22,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 01:56:22,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 01:56:22,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 01:56:22,181 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 01:56:22,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 01:56:22,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 01:56:22,187 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 01:56:22,187 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 01:56:22,187 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 01:56:22,188 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 01:56:22,192 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 01:56:22,194 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 01:56:22,194 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 01:56:22,195 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 01:56:22,198 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 01:56:22,199 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 01:56:22,200 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 01:56:22,200 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 01:56:22,201 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 01:56:22,201 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 01:56:22,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 01:56:22,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 01:56:22,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 01:56:22,205 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 01:56:22,217 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 01:56:22,217 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 01:56:22,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 01:56:22,219 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 01:56:22,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 01:56:22,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 01:56:22,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 01:56:22,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 01:56:22,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 01:56:22,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 01:56:22,221 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 01:56:22,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 01:56:22,221 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 01:56:22,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 01:56:22,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 01:56:22,222 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 01:56:22,222 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 01:56:22,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 01:56:22,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 01:56:22,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 01:56:22,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 01:56:22,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 01:56:22,224 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 01:56:22,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 01:56:22,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 01:56:22,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 01:56:22,623 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 01:56:22,624 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 01:56:22,625 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/modsf.c [2020-11-07 01:56:22,711 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74e76dc56/43577cf94a2c46d8a2e84f61c5119382/FLAGc0254b8b5 [2020-11-07 01:56:23,435 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 01:56:23,436 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/modsf.c [2020-11-07 01:56:23,448 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74e76dc56/43577cf94a2c46d8a2e84f61c5119382/FLAGc0254b8b5 [2020-11-07 01:56:23,794 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74e76dc56/43577cf94a2c46d8a2e84f61c5119382 [2020-11-07 01:56:23,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 01:56:23,806 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 01:56:23,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 01:56:23,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 01:56:23,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 01:56:23,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:23" (1/1) ... [2020-11-07 01:56:23,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51e66967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:23, skipping insertion in model container [2020-11-07 01:56:23,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:23" (1/1) ... [2020-11-07 01:56:23,831 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 01:56:23,852 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 01:56:24,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:56:24,081 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 01:56:24,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:56:24,124 INFO L208 MainTranslator]: Completed translation [2020-11-07 01:56:24,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:24 WrapperNode [2020-11-07 01:56:24,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 01:56:24,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 01:56:24,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 01:56:24,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 01:56:24,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:24" (1/1) ... [2020-11-07 01:56:24,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:24" (1/1) ... [2020-11-07 01:56:24,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:24" (1/1) ... [2020-11-07 01:56:24,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:24" (1/1) ... [2020-11-07 01:56:24,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:24" (1/1) ... [2020-11-07 01:56:24,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:24" (1/1) ... [2020-11-07 01:56:24,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:24" (1/1) ... [2020-11-07 01:56:24,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 01:56:24,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 01:56:24,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 01:56:24,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 01:56:24,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:24" (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 [2020-11-07 01:56:24,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 01:56:24,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 01:56:24,279 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 01:56:24,279 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 01:56:24,280 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 01:56:24,280 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 01:56:24,280 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 01:56:24,280 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 01:56:24,280 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 01:56:24,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 01:56:24,281 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 01:56:24,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 01:56:24,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 01:56:24,282 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 01:56:24,282 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 01:56:24,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 01:56:24,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 01:56:24,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 01:56:24,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 01:56:24,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 01:56:24,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 01:56:24,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 01:56:24,810 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 01:56:24,810 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-07 01:56:24,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:24 BoogieIcfgContainer [2020-11-07 01:56:24,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 01:56:24,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 01:56:24,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 01:56:24,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 01:56:24,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:56:23" (1/3) ... [2020-11-07 01:56:24,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3cff0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:24, skipping insertion in model container [2020-11-07 01:56:24,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:24" (2/3) ... [2020-11-07 01:56:24,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3cff0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:24, skipping insertion in model container [2020-11-07 01:56:24,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:24" (3/3) ... [2020-11-07 01:56:24,821 INFO L111 eAbstractionObserver]: Analyzing ICFG modsf.c [2020-11-07 01:56:24,836 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 01:56:24,840 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 01:56:24,852 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 01:56:24,876 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 01:56:24,876 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 01:56:24,876 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 01:56:24,876 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 01:56:24,876 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 01:56:24,877 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 01:56:24,877 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 01:56:24,877 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 01:56:24,894 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-11-07 01:56:24,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-07 01:56:24,905 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:24,905 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] [2020-11-07 01:56:24,906 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:24,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:24,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1527803307, now seen corresponding path program 1 times [2020-11-07 01:56:24,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:24,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864831321] [2020-11-07 01:56:24,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:25,008 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:25,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:25,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:56:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:25,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-07 01:56:25,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:25,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:56:25,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864831321] [2020-11-07 01:56:25,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:56:25,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 01:56:25,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879247465] [2020-11-07 01:56:25,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 01:56:25,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:56:25,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 01:56:25,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 01:56:25,282 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 3 states. [2020-11-07 01:56:25,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:56:25,558 INFO L93 Difference]: Finished difference Result 155 states and 179 transitions. [2020-11-07 01:56:25,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 01:56:25,560 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-11-07 01:56:25,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:56:25,570 INFO L225 Difference]: With dead ends: 155 [2020-11-07 01:56:25,570 INFO L226 Difference]: Without dead ends: 78 [2020-11-07 01:56:25,574 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 [2020-11-07 01:56:25,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-11-07 01:56:25,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-11-07 01:56:25,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-11-07 01:56:25,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2020-11-07 01:56:25,634 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 43 [2020-11-07 01:56:25,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:56:25,635 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2020-11-07 01:56:25,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 01:56:25,636 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2020-11-07 01:56:25,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-07 01:56:25,638 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:25,638 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] [2020-11-07 01:56:25,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 01:56:25,639 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:25,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:25,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1915167877, now seen corresponding path program 1 times [2020-11-07 01:56:25,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:25,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181782773] [2020-11-07 01:56:25,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:25,645 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:25,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:56:25,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:25,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-07 01:56:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:25,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:56:25,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181782773] [2020-11-07 01:56:25,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:56:25,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 01:56:25,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702896124] [2020-11-07 01:56:25,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 01:56:25,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:56:25,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 01:56:25,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-07 01:56:25,931 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand 5 states. [2020-11-07 01:56:26,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:56:26,415 INFO L93 Difference]: Finished difference Result 157 states and 169 transitions. [2020-11-07 01:56:26,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 01:56:26,415 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-11-07 01:56:26,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:56:26,419 INFO L225 Difference]: With dead ends: 157 [2020-11-07 01:56:26,420 INFO L226 Difference]: Without dead ends: 112 [2020-11-07 01:56:26,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-07 01:56:26,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-11-07 01:56:26,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 82. [2020-11-07 01:56:26,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-11-07 01:56:26,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2020-11-07 01:56:26,443 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 43 [2020-11-07 01:56:26,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:56:26,444 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2020-11-07 01:56:26,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 01:56:26,444 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2020-11-07 01:56:26,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-11-07 01:56:26,446 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:26,447 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:56:26,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 01:56:26,447 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:26,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:26,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1751189753, now seen corresponding path program 1 times [2020-11-07 01:56:26,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:26,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865105829] [2020-11-07 01:56:26,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:26,512 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 01:56:26,514 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:26,543 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-11-07 01:56:26,543 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 01:56:26,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 01:56:26,574 WARN L253 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-11-07 01:56:26,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:56:26 BoogieIcfgContainer [2020-11-07 01:56:26,575 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 01:56:26,579 INFO L168 Benchmark]: Toolchain (without parser) took 2775.64 ms. Allocated memory is still 153.1 MB. Free memory was 129.1 MB in the beginning and 100.8 MB in the end (delta: 28.3 MB). Peak memory consumption was 29.8 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:26,582 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 125.8 MB. Free memory was 96.2 MB in the beginning and 96.1 MB in the end (delta: 160.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 01:56:26,583 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.24 ms. Allocated memory is still 153.1 MB. Free memory was 128.4 MB in the beginning and 118.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:26,584 INFO L168 Benchmark]: Boogie Preprocessor took 48.97 ms. Allocated memory is still 153.1 MB. Free memory was 118.4 MB in the beginning and 116.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:26,585 INFO L168 Benchmark]: RCFGBuilder took 635.40 ms. Allocated memory is still 153.1 MB. Free memory was 116.6 MB in the beginning and 133.9 MB in the end (delta: -17.3 MB). Peak memory consumption was 23.5 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:26,586 INFO L168 Benchmark]: TraceAbstraction took 1760.96 ms. Allocated memory is still 153.1 MB. Free memory was 133.4 MB in the beginning and 100.8 MB in the end (delta: 32.6 MB). Peak memory consumption was 32.6 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:26,594 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 125.8 MB. Free memory was 96.2 MB in the beginning and 96.1 MB in the end (delta: 160.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 315.24 ms. Allocated memory is still 153.1 MB. Free memory was 128.4 MB in the beginning and 118.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.97 ms. Allocated memory is still 153.1 MB. Free memory was 118.4 MB in the beginning and 116.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 635.40 ms. Allocated memory is still 153.1 MB. Free memory was 116.6 MB in the beginning and 133.9 MB in the end (delta: -17.3 MB). Peak memory consumption was 23.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1760.96 ms. Allocated memory is still 153.1 MB. Free memory was 133.4 MB in the beginning and 100.8 MB in the end (delta: 32.6 MB). Peak memory consumption was 32.6 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 FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] long long *a = malloc(sizeof(long long)*N); [L31] sum[0] = 0 [L32] i=0 [L32] COND TRUE i