/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/brs1f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:15:28,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:15:28,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:15:28,444 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 00:15:28,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 00:15:28,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 00:15:28,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 00:15:28,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 00:15:28,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 00:15:28,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 00:15:28,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 00:15:28,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 00:15:28,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 00:15:28,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 00:15:28,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 00:15:28,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 00:15:28,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 00:15:28,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 00:15:28,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 00:15:28,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 00:15:28,572 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 00:15:28,592 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:15:28,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:15:28,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:15:28,595 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:15:28,595 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:15:28,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:15:28,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:15:28,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:15:28,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:15:28,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:15:28,596 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:15:28,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:15:28,597 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:15:28,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:15:28,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:15:28,597 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:15:28,598 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:15:28,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:15:28,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:15:28,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:15:28,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:15:28,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:15:28,599 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:15:29,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:15:29,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:15:29,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:15:29,062 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:15:29,063 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:15:29,064 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs1f.c [2021-02-24 00:15:29,152 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3e0d73fe/c1523d0cef8e4363a2df6d19e0ae24e4/FLAG34f8cef14 [2021-02-24 00:15:29,738 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:15:29,739 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs1f.c [2021-02-24 00:15:29,747 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3e0d73fe/c1523d0cef8e4363a2df6d19e0ae24e4/FLAG34f8cef14 [2021-02-24 00:15:30,103 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3e0d73fe/c1523d0cef8e4363a2df6d19e0ae24e4 [2021-02-24 00:15:30,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:15:30,122 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:15:30,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:15:30,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:15:30,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:15:30,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:15:30" (1/1) ... [2021-02-24 00:15:30,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@689b0af6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:30, skipping insertion in model container [2021-02-24 00:15:30,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:15:30" (1/1) ... [2021-02-24 00:15:30,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:15:30,155 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:15:30,301 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/brs1f.c[588,601] [2021-02-24 00:15:30,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:15:30,332 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:15:30,349 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/brs1f.c[588,601] [2021-02-24 00:15:30,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:15:30,378 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:15:30,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:30 WrapperNode [2021-02-24 00:15:30,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:15:30,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:15:30,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:15:30,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:15:30,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:30" (1/1) ... [2021-02-24 00:15:30,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:30" (1/1) ... [2021-02-24 00:15:30,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:30" (1/1) ... [2021-02-24 00:15:30,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:30" (1/1) ... [2021-02-24 00:15:30,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:30" (1/1) ... [2021-02-24 00:15:30,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:30" (1/1) ... [2021-02-24 00:15:30,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:30" (1/1) ... [2021-02-24 00:15:30,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:15:30,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:15:30,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:15:30,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:15:30,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:30" (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 00:15:30,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:15:30,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:15:30,618 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:15:30,619 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 00:15:30,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:15:30,621 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:15:30,621 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:15:30,621 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:15:30,622 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:15:30,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:15:30,623 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 00:15:30,623 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:15:30,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 00:15:30,624 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 00:15:30,624 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:15:30,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 00:15:30,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:15:30,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:15:30,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:15:30,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:15:30,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:15:30,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:15:31,191 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:15:31,191 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-24 00:15:31,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:15:31 BoogieIcfgContainer [2021-02-24 00:15:31,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:15:31,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:15:31,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:15:31,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:15:31,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:15:30" (1/3) ... [2021-02-24 00:15:31,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7529460e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:15:31, skipping insertion in model container [2021-02-24 00:15:31,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:30" (2/3) ... [2021-02-24 00:15:31,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7529460e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:15:31, skipping insertion in model container [2021-02-24 00:15:31,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:15:31" (3/3) ... [2021-02-24 00:15:31,205 INFO L111 eAbstractionObserver]: Analyzing ICFG brs1f.c [2021-02-24 00:15:31,217 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:15:31,223 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:15:31,247 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:15:31,284 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:15:31,285 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:15:31,285 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:15:31,285 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:15:31,285 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:15:31,286 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:15:31,286 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:15:31,286 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:15:31,313 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2021-02-24 00:15:31,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-24 00:15:31,328 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:15:31,329 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] [2021-02-24 00:15:31,330 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:15:31,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:15:31,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1589495831, now seen corresponding path program 1 times [2021-02-24 00:15:31,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:15:31,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146285921] [2021-02-24 00:15:31,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:15:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:31,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:31,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:31,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:31,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:31,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:15:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:31,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:31,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:31,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 00:15:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:31,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:31,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:31,840 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 00:15:31,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146285921] [2021-02-24 00:15:31,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:15:31,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 00:15:31,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379546831] [2021-02-24 00:15:31,850 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 00:15:31,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:15:31,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 00:15:31,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 00:15:31,868 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2021-02-24 00:15:32,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:15:32,155 INFO L93 Difference]: Finished difference Result 106 states and 121 transitions. [2021-02-24 00:15:32,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 00:15:32,158 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2021-02-24 00:15:32,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:15:32,176 INFO L225 Difference]: With dead ends: 106 [2021-02-24 00:15:32,177 INFO L226 Difference]: Without dead ends: 51 [2021-02-24 00:15:32,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 00:15:32,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-02-24 00:15:32,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-02-24 00:15:32,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-02-24 00:15:32,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2021-02-24 00:15:32,236 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 35 [2021-02-24 00:15:32,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:15:32,237 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2021-02-24 00:15:32,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 00:15:32,237 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2021-02-24 00:15:32,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-24 00:15:32,238 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:15:32,239 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] [2021-02-24 00:15:32,239 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:15:32,239 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:15:32,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:15:32,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1961847080, now seen corresponding path program 1 times [2021-02-24 00:15:32,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:15:32,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68262035] [2021-02-24 00:15:32,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:15:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:32,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:32,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:32,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:32,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:15:32,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:32,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:15:32,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:32,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:32,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:15:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:32,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:32,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:32,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 00:15:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:32,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:32,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:32,441 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 00:15:32,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68262035] [2021-02-24 00:15:32,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:15:32,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 00:15:32,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547749519] [2021-02-24 00:15:32,444 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:15:32,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:15:32,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:15:32,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:15:32,446 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 5 states. [2021-02-24 00:15:32,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:15:32,751 INFO L93 Difference]: Finished difference Result 78 states and 84 transitions. [2021-02-24 00:15:32,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 00:15:32,752 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2021-02-24 00:15:32,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:15:32,754 INFO L225 Difference]: With dead ends: 78 [2021-02-24 00:15:32,754 INFO L226 Difference]: Without dead ends: 60 [2021-02-24 00:15:32,756 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 [2021-02-24 00:15:32,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-02-24 00:15:32,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2021-02-24 00:15:32,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-02-24 00:15:32,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2021-02-24 00:15:32,773 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 35 [2021-02-24 00:15:32,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:15:32,774 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2021-02-24 00:15:32,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:15:32,774 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2021-02-24 00:15:32,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-02-24 00:15:32,776 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:15:32,776 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] [2021-02-24 00:15:32,776 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:15:32,776 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:15:32,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:15:32,777 INFO L82 PathProgramCache]: Analyzing trace with hash 2023038414, now seen corresponding path program 1 times [2021-02-24 00:15:32,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:15:32,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132407198] [2021-02-24 00:15:32,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:15:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 00:15:32,818 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 00:15:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 00:15:32,851 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 00:15:32,898 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 00:15:32,898 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 00:15:32,898 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:15:32,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:15:32 BoogieIcfgContainer [2021-02-24 00:15:32,954 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:15:32,955 INFO L168 Benchmark]: Toolchain (without parser) took 2842.62 ms. Allocated memory is still 153.1 MB. Free memory was 137.5 MB in the beginning and 79.7 MB in the end (delta: 57.8 MB). Peak memory consumption was 57.9 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:32,956 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 153.1 MB. Free memory is still 126.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:15:32,957 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.54 ms. Allocated memory is still 153.1 MB. Free memory was 136.4 MB in the beginning and 126.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:32,958 INFO L168 Benchmark]: Boogie Preprocessor took 47.52 ms. Allocated memory is still 153.1 MB. Free memory was 126.6 MB in the beginning and 125.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:32,959 INFO L168 Benchmark]: RCFGBuilder took 765.78 ms. Allocated memory is still 153.1 MB. Free memory was 125.0 MB in the beginning and 119.1 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:32,961 INFO L168 Benchmark]: TraceAbstraction took 1757.11 ms. Allocated memory is still 153.1 MB. Free memory was 118.8 MB in the beginning and 79.7 MB in the end (delta: 39.1 MB). Peak memory consumption was 40.7 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:32,965 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 153.1 MB. Free memory is still 126.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 255.54 ms. Allocated memory is still 153.1 MB. Free memory was 136.4 MB in the beginning and 126.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.52 ms. Allocated memory is still 153.1 MB. Free memory was 126.6 MB in the beginning and 125.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 765.78 ms. Allocated memory is still 153.1 MB. Free memory was 125.0 MB in the beginning and 119.1 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1757.11 ms. Allocated memory is still 153.1 MB. Free memory was 118.8 MB in the beginning and 79.7 MB in the end (delta: 39.1 MB). Peak memory consumption was 40.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=51, N=0] [L23] N = __VERIFIER_nondet_int() VAL [\old(N)=0, __VERIFIER_nondet_int()=1, N=1] [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L27] int i; VAL [\old(N)=0, N=1] [L28] long long sum[1]; VAL [\old(N)=0, N=1, sum={3:0}] [L29] int *a = malloc(sizeof(int)*N); VAL [\old(N)=0, a={-1:0}, malloc(sizeof(int)*N)={-1:0}, N=1, sum={3:0}] [L31] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={3:0}] [L31] COND TRUE i