/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/s2liff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:47:23,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:47:23,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:47:23,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 18:47:23,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 18:47:23,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 18:47:23,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 18:47:23,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 18:47:23,602 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 18:47:23,603 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 18:47:23,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 18:47:23,606 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 18:47:23,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:47:23,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:47:23,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:47:23,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:47:23,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:47:23,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:47:23,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:47:23,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:47:23,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:47:23,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:47:23,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:47:23,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:47:23,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 18:47:23,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:47:23,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:47:23,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:47:23,641 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 18:47:23,665 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:47:23,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:47:23,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:47:23,667 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:47:23,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:47:23,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:47:23,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:47:23,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:47:23,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:47:23,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:47:23,670 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:47:23,670 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:47:23,670 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:47:23,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:47:23,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:47:23,671 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:47:23,671 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:47:23,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:47:23,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:47:23,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:47:23,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:47:23,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:47:23,672 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:47:24,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:47:24,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:47:24,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:47:24,131 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:47:24,133 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:47:24,134 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s2liff.c [2021-02-23 18:47:24,205 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa49c9c4b/15dbb433343e42b0922738fccc57c620/FLAG16a0cf61c [2021-02-23 18:47:24,896 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:47:24,896 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s2liff.c [2021-02-23 18:47:24,907 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa49c9c4b/15dbb433343e42b0922738fccc57c620/FLAG16a0cf61c [2021-02-23 18:47:25,240 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa49c9c4b/15dbb433343e42b0922738fccc57c620 [2021-02-23 18:47:25,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:47:25,256 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:47:25,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:47:25,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:47:25,262 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:47:25,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:47:25" (1/1) ... [2021-02-23 18:47:25,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dc8e192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:25, skipping insertion in model container [2021-02-23 18:47:25,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:47:25" (1/1) ... [2021-02-23 18:47:25,272 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:47:25,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:47:25,453 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/s2liff.c[589,602] [2021-02-23 18:47:25,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:47:25,486 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:47:25,502 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/s2liff.c[589,602] [2021-02-23 18:47:25,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:47:25,532 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:47:25,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:25 WrapperNode [2021-02-23 18:47:25,533 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:47:25,534 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:47:25,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:47:25,534 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:47:25,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:25" (1/1) ... [2021-02-23 18:47:25,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:25" (1/1) ... [2021-02-23 18:47:25,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:25" (1/1) ... [2021-02-23 18:47:25,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:25" (1/1) ... [2021-02-23 18:47:25,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:25" (1/1) ... [2021-02-23 18:47:25,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:25" (1/1) ... [2021-02-23 18:47:25,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:25" (1/1) ... [2021-02-23 18:47:25,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:47:25,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:47:25,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:47:25,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:47:25,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:25" (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 [2021-02-23 18:47:25,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:47:25,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:47:25,690 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:47:25,690 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 18:47:25,690 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 18:47:25,691 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:47:25,691 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:47:25,691 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:47:25,691 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:47:25,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:47:25,692 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 18:47:25,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 18:47:25,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:47:25,692 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 18:47:25,692 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:47:25,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 18:47:25,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:47:25,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:47:25,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:47:25,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:47:25,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:47:25,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:47:26,227 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:47:26,228 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-23 18:47:26,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:47:26 BoogieIcfgContainer [2021-02-23 18:47:26,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:47:26,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:47:26,232 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:47:26,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:47:26,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:47:25" (1/3) ... [2021-02-23 18:47:26,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37dcf4d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:47:26, skipping insertion in model container [2021-02-23 18:47:26,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:25" (2/3) ... [2021-02-23 18:47:26,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37dcf4d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:47:26, skipping insertion in model container [2021-02-23 18:47:26,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:47:26" (3/3) ... [2021-02-23 18:47:26,240 INFO L111 eAbstractionObserver]: Analyzing ICFG s2liff.c [2021-02-23 18:47:26,248 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:47:26,253 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:47:26,274 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:47:26,300 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:47:26,300 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:47:26,300 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:47:26,300 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:47:26,301 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:47:26,301 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:47:26,301 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:47:26,301 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:47:26,319 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2021-02-23 18:47:26,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-23 18:47:26,330 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:47:26,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:47:26,331 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:47:26,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:47:26,338 INFO L82 PathProgramCache]: Analyzing trace with hash -276473570, now seen corresponding path program 1 times [2021-02-23 18:47:26,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:47:26,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404380767] [2021-02-23 18:47:26,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:47:26,432 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:47:26,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:26,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:26,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:26,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:26,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:26,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:47:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:26,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:26,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:26,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:47:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:26,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:26,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:26,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:47:26,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404380767] [2021-02-23 18:47:26,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:47:26,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 18:47:26,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985414378] [2021-02-23 18:47:26,713 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 18:47:26,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:47:26,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 18:47:26,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:47:26,731 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 3 states. [2021-02-23 18:47:26,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:47:26,946 INFO L93 Difference]: Finished difference Result 131 states and 148 transitions. [2021-02-23 18:47:26,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 18:47:26,948 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2021-02-23 18:47:26,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:47:26,957 INFO L225 Difference]: With dead ends: 131 [2021-02-23 18:47:26,957 INFO L226 Difference]: Without dead ends: 64 [2021-02-23 18:47:26,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:47:26,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-02-23 18:47:27,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-02-23 18:47:27,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-02-23 18:47:27,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2021-02-23 18:47:27,023 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 38 [2021-02-23 18:47:27,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:47:27,024 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2021-02-23 18:47:27,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 18:47:27,024 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2021-02-23 18:47:27,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-23 18:47:27,026 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:47:27,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:47:27,027 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:47:27,027 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:47:27,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:47:27,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1119969012, now seen corresponding path program 1 times [2021-02-23 18:47:27,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:47:27,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333263832] [2021-02-23 18:47:27,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:47:27,032 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:47:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:27,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:27,114 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:27,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:27,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:47:27,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:27,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:47:27,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:27,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:27,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:47:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:27,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:27,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:27,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:47:27,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:27,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:27,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:27,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:47:27,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333263832] [2021-02-23 18:47:27,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:47:27,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 18:47:27,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000153440] [2021-02-23 18:47:27,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 18:47:27,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:47:27,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 18:47:27,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 18:47:27,204 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand 5 states. [2021-02-23 18:47:27,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:47:27,476 INFO L93 Difference]: Finished difference Result 120 states and 129 transitions. [2021-02-23 18:47:27,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 18:47:27,476 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2021-02-23 18:47:27,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:47:27,479 INFO L225 Difference]: With dead ends: 120 [2021-02-23 18:47:27,479 INFO L226 Difference]: Without dead ends: 89 [2021-02-23 18:47:27,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:47:27,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-02-23 18:47:27,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 67. [2021-02-23 18:47:27,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2021-02-23 18:47:27,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2021-02-23 18:47:27,502 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 38 [2021-02-23 18:47:27,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:47:27,503 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2021-02-23 18:47:27,503 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 18:47:27,503 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2021-02-23 18:47:27,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-23 18:47:27,506 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:47:27,506 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] [2021-02-23 18:47:27,506 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:47:27,506 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:47:27,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:47:27,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1778519661, now seen corresponding path program 1 times [2021-02-23 18:47:27,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:47:27,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771661991] [2021-02-23 18:47:27,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:47:27,540 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:47:27,542 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:47:27,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:47:27,609 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:47:27,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:47:27,696 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:47:27,733 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 18:47:27,734 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 18:47:27,734 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:47:27,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:47:27 BoogieIcfgContainer [2021-02-23 18:47:27,754 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:47:27,756 INFO L168 Benchmark]: Toolchain (without parser) took 2510.17 ms. Allocated memory was 153.1 MB in the beginning and 191.9 MB in the end (delta: 38.8 MB). Free memory was 129.0 MB in the beginning and 150.7 MB in the end (delta: -21.6 MB). Peak memory consumption was 18.0 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:27,757 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 153.1 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:47:27,758 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.63 ms. Allocated memory is still 153.1 MB. Free memory was 127.8 MB in the beginning and 117.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:27,759 INFO L168 Benchmark]: Boogie Preprocessor took 47.37 ms. Allocated memory is still 153.1 MB. Free memory was 117.3 MB in the beginning and 115.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:27,760 INFO L168 Benchmark]: RCFGBuilder took 648.07 ms. Allocated memory is still 153.1 MB. Free memory was 115.5 MB in the beginning and 128.4 MB in the end (delta: -12.9 MB). Peak memory consumption was 19.3 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:27,761 INFO L168 Benchmark]: TraceAbstraction took 1522.41 ms. Allocated memory was 153.1 MB in the beginning and 191.9 MB in the end (delta: 38.8 MB). Free memory was 127.9 MB in the beginning and 150.7 MB in the end (delta: -22.8 MB). Peak memory consumption was 15.5 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:27,764 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 153.1 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 275.63 ms. Allocated memory is still 153.1 MB. Free memory was 127.8 MB in the beginning and 117.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.37 ms. Allocated memory is still 153.1 MB. Free memory was 117.3 MB in the beginning and 115.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 648.07 ms. Allocated memory is still 153.1 MB. Free memory was 115.5 MB in the beginning and 128.4 MB in the end (delta: -12.9 MB). Peak memory consumption was 19.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1522.41 ms. Allocated memory was 153.1 MB in the beginning and 191.9 MB in the end (delta: 38.8 MB). Free memory was 127.9 MB in the beginning and 150.7 MB in the end (delta: -22.8 MB). Peak memory consumption was 15.5 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; [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); [L31] sum[0] = N [L32] i=0 [L32] COND TRUE i