/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/res2of.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 01:56:35,036 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 01:56:35,040 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 01:56:35,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 01:56:35,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 01:56:35,105 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 01:56:35,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 01:56:35,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 01:56:35,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 01:56:35,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 01:56:35,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 01:56:35,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 01:56:35,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 01:56:35,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 01:56:35,134 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 01:56:35,136 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 01:56:35,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 01:56:35,140 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 01:56:35,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 01:56:35,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 01:56:35,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 01:56:35,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 01:56:35,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 01:56:35,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 01:56:35,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 01:56:35,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 01:56:35,183 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 01:56:35,185 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 01:56:35,186 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 01:56:35,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 01:56:35,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 01:56:35,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 01:56:35,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 01:56:35,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 01:56:35,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 01:56:35,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 01:56:35,191 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 01:56:35,214 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 01:56:35,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 01:56:35,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 01:56:35,219 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 01:56:35,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 01:56:35,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 01:56:35,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 01:56:35,219 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 01:56:35,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 01:56:35,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 01:56:35,221 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 01:56:35,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 01:56:35,221 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 01:56:35,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 01:56:35,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 01:56:35,222 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 01:56:35,222 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 01:56:35,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 01:56:35,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 01:56:35,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 01:56:35,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 01:56:35,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 01:56:35,224 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 01:56:35,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 01:56:35,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 01:56:35,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 01:56:35,728 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 01:56:35,728 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 01:56:35,729 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res2of.c [2020-11-07 01:56:35,806 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dca934dc/4dbbb5a808424906b54addd0419fcc36/FLAGa62db5ea0 [2020-11-07 01:56:36,575 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 01:56:36,576 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/res2of.c [2020-11-07 01:56:36,585 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dca934dc/4dbbb5a808424906b54addd0419fcc36/FLAGa62db5ea0 [2020-11-07 01:56:36,900 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dca934dc/4dbbb5a808424906b54addd0419fcc36 [2020-11-07 01:56:36,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 01:56:36,911 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 01:56:36,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 01:56:36,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 01:56:36,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 01:56:36,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:36" (1/1) ... [2020-11-07 01:56:36,924 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62043c95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:36, skipping insertion in model container [2020-11-07 01:56:36,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:36" (1/1) ... [2020-11-07 01:56:36,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 01:56:36,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 01:56:37,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:56:37,205 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 01:56:37,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:56:37,250 INFO L208 MainTranslator]: Completed translation [2020-11-07 01:56:37,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:37 WrapperNode [2020-11-07 01:56:37,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 01:56:37,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 01:56:37,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 01:56:37,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 01:56:37,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:37" (1/1) ... [2020-11-07 01:56:37,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:37" (1/1) ... [2020-11-07 01:56:37,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:37" (1/1) ... [2020-11-07 01:56:37,280 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:37" (1/1) ... [2020-11-07 01:56:37,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:37" (1/1) ... [2020-11-07 01:56:37,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:37" (1/1) ... [2020-11-07 01:56:37,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:37" (1/1) ... [2020-11-07 01:56:37,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 01:56:37,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 01:56:37,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 01:56:37,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 01:56:37,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:37" (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 01:56:37,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 01:56:37,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 01:56:37,399 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 01:56:37,399 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 01:56:37,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 01:56:37,399 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 01:56:37,399 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 01:56:37,399 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 01:56:37,400 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 01:56:37,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 01:56:37,400 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 01:56:37,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 01:56:37,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 01:56:37,400 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 01:56:37,401 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 01:56:37,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 01:56:37,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 01:56:37,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 01:56:37,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 01:56:37,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 01:56:37,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 01:56:37,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 01:56:37,954 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 01:56:37,955 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-07 01:56:37,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:37 BoogieIcfgContainer [2020-11-07 01:56:37,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 01:56:37,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 01:56:37,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 01:56:37,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 01:56:37,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:56:36" (1/3) ... [2020-11-07 01:56:37,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec9f815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:37, skipping insertion in model container [2020-11-07 01:56:37,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:37" (2/3) ... [2020-11-07 01:56:37,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec9f815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:37, skipping insertion in model container [2020-11-07 01:56:37,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:37" (3/3) ... [2020-11-07 01:56:37,968 INFO L111 eAbstractionObserver]: Analyzing ICFG res2of.c [2020-11-07 01:56:38,016 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 01:56:38,034 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 01:56:38,052 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 01:56:38,078 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 01:56:38,078 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 01:56:38,078 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 01:56:38,078 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 01:56:38,078 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 01:56:38,079 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 01:56:38,079 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 01:56:38,079 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 01:56:38,097 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2020-11-07 01:56:38,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-07 01:56:38,108 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:38,109 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] [2020-11-07 01:56:38,109 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:38,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:38,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1636857064, now seen corresponding path program 1 times [2020-11-07 01:56:38,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:38,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28584136] [2020-11-07 01:56:38,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:38,214 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:38,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:38,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:56:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:38,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-07 01:56:38,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:38,554 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 01:56:38,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [28584136] [2020-11-07 01:56:38,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:56:38,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 01:56:38,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735497876] [2020-11-07 01:56:38,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 01:56:38,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:56:38,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 01:56:38,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 01:56:38,586 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 3 states. [2020-11-07 01:56:38,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:56:38,861 INFO L93 Difference]: Finished difference Result 177 states and 205 transitions. [2020-11-07 01:56:38,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 01:56:38,863 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2020-11-07 01:56:38,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:56:38,875 INFO L225 Difference]: With dead ends: 177 [2020-11-07 01:56:38,875 INFO L226 Difference]: Without dead ends: 86 [2020-11-07 01:56:38,880 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 01:56:38,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-11-07 01:56:38,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-11-07 01:56:38,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-07 01:56:38,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2020-11-07 01:56:38,941 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 49 [2020-11-07 01:56:38,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:56:38,942 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2020-11-07 01:56:38,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 01:56:38,942 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2020-11-07 01:56:38,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-07 01:56:38,945 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:38,945 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] [2020-11-07 01:56:38,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 01:56:38,946 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:38,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:38,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1249492494, now seen corresponding path program 1 times [2020-11-07 01:56:38,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:38,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818934987] [2020-11-07 01:56:38,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:38,951 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:39,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:56:39,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:39,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-07 01:56:39,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:39,115 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 01:56:39,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818934987] [2020-11-07 01:56:39,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:56:39,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 01:56:39,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040838268] [2020-11-07 01:56:39,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 01:56:39,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:56:39,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 01:56:39,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-07 01:56:39,119 INFO L87 Difference]: Start difference. First operand 86 states and 91 transitions. Second operand 5 states. [2020-11-07 01:56:39,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:56:39,471 INFO L93 Difference]: Finished difference Result 171 states and 186 transitions. [2020-11-07 01:56:39,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 01:56:39,472 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-11-07 01:56:39,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:56:39,474 INFO L225 Difference]: With dead ends: 171 [2020-11-07 01:56:39,474 INFO L226 Difference]: Without dead ends: 122 [2020-11-07 01:56:39,476 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 [2020-11-07 01:56:39,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-11-07 01:56:39,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 92. [2020-11-07 01:56:39,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-11-07 01:56:39,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 97 transitions. [2020-11-07 01:56:39,497 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 97 transitions. Word has length 49 [2020-11-07 01:56:39,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:56:39,497 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 97 transitions. [2020-11-07 01:56:39,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 01:56:39,498 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 97 transitions. [2020-11-07 01:56:39,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-07 01:56:39,501 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:39,501 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:56:39,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 01:56:39,502 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:39,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:39,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1860696321, now seen corresponding path program 1 times [2020-11-07 01:56:39,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:39,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292413787] [2020-11-07 01:56:39,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:39,563 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 01:56:39,565 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:39,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 01:56:39,685 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 01:56:39,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 01:56:39,779 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 01:56:39,824 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 01:56:39,824 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 01:56:39,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 01:56:39,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:56:39 BoogieIcfgContainer [2020-11-07 01:56:39,847 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 01:56:39,850 INFO L168 Benchmark]: Toolchain (without parser) took 2942.87 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 131.9 MB in the beginning and 130.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 33.8 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:39,851 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 155.2 MB. Free memory is still 130.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 01:56:39,852 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.83 ms. Allocated memory is still 155.2 MB. Free memory was 131.2 MB in the beginning and 121.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:39,852 INFO L168 Benchmark]: Boogie Preprocessor took 59.14 ms. Allocated memory is still 155.2 MB. Free memory was 121.2 MB in the beginning and 119.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:39,853 INFO L168 Benchmark]: RCFGBuilder took 645.87 ms. Allocated memory is still 155.2 MB. Free memory was 119.4 MB in the beginning and 95.3 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:39,854 INFO L168 Benchmark]: TraceAbstraction took 1887.01 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 94.8 MB in the beginning and 131.2 MB in the end (delta: -36.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 01:56:39,858 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 155.2 MB. Free memory is still 130.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 336.83 ms. Allocated memory is still 155.2 MB. Free memory was 131.2 MB in the beginning and 121.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 59.14 ms. Allocated memory is still 155.2 MB. Free memory was 121.2 MB in the beginning and 119.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 645.87 ms. Allocated memory is still 155.2 MB. Free memory was 119.4 MB in the beginning and 95.3 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1887.01 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 94.8 MB in the beginning and 131.2 MB in the end (delta: -36.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a 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] int *a = malloc(sizeof(int)*N); [L30] int *b = malloc(sizeof(int)*N); [L31] int *c = malloc(sizeof(int)*N); [L33] sum[0] = 0 [L34] i=0 [L34] COND TRUE i