/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/s22iff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 01:56:36,533 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 01:56:36,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 01:56:36,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 01:56:36,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 01:56:36,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 01:56:36,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 01:56:36,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 01:56:36,578 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 01:56:36,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 01:56:36,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 01:56:36,582 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 01:56:36,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 01:56:36,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 01:56:36,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 01:56:36,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 01:56:36,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 01:56:36,589 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 01:56:36,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 01:56:36,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 01:56:36,598 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 01:56:36,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 01:56:36,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 01:56:36,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 01:56:36,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 01:56:36,626 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 01:56:36,627 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 01:56:36,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 01:56:36,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 01:56:36,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 01:56:36,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 01:56:36,643 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 01:56:36,644 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 01:56:36,645 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 01:56:36,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 01:56:36,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 01:56:36,650 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 01:56:36,670 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 01:56:36,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 01:56:36,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 01:56:36,676 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 01:56:36,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 01:56:36,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 01:56:36,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 01:56:36,677 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 01:56:36,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 01:56:36,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 01:56:36,678 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 01:56:36,679 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 01:56:36,679 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 01:56:36,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 01:56:36,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 01:56:36,680 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 01:56:36,680 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 01:56:36,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 01:56:36,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 01:56:36,681 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 01:56:36,681 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 01:56:36,681 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 01:56:36,681 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 01:56:37,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 01:56:37,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 01:56:37,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 01:56:37,163 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 01:56:37,164 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 01:56:37,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s22iff.c [2020-11-07 01:56:37,250 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07766a7d4/2165be12861c4b01b6cbe9225d81a67f/FLAG02653dd94 [2020-11-07 01:56:37,882 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 01:56:37,882 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s22iff.c [2020-11-07 01:56:37,898 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07766a7d4/2165be12861c4b01b6cbe9225d81a67f/FLAG02653dd94 [2020-11-07 01:56:38,261 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07766a7d4/2165be12861c4b01b6cbe9225d81a67f [2020-11-07 01:56:38,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 01:56:38,274 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 01:56:38,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 01:56:38,282 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 01:56:38,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 01:56:38,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:38" (1/1) ... [2020-11-07 01:56:38,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51b5895f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:38, skipping insertion in model container [2020-11-07 01:56:38,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:38" (1/1) ... [2020-11-07 01:56:38,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 01:56:38,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 01:56:38,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:56:38,608 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 01:56:38,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:56:38,676 INFO L208 MainTranslator]: Completed translation [2020-11-07 01:56:38,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:38 WrapperNode [2020-11-07 01:56:38,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 01:56:38,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 01:56:38,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 01:56:38,678 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 01:56:38,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:38" (1/1) ... [2020-11-07 01:56:38,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:38" (1/1) ... [2020-11-07 01:56:38,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:38" (1/1) ... [2020-11-07 01:56:38,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:38" (1/1) ... [2020-11-07 01:56:38,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:38" (1/1) ... [2020-11-07 01:56:38,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:38" (1/1) ... [2020-11-07 01:56:38,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:38" (1/1) ... [2020-11-07 01:56:38,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 01:56:38,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 01:56:38,763 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 01:56:38,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 01:56:38,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:38" (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 01:56:38,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 01:56:38,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 01:56:38,837 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 01:56:38,837 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 01:56:38,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 01:56:38,838 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 01:56:38,838 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 01:56:38,838 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 01:56:38,838 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 01:56:38,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 01:56:38,838 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 01:56:38,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 01:56:38,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 01:56:38,839 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 01:56:38,839 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 01:56:38,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 01:56:38,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 01:56:38,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 01:56:38,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 01:56:38,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 01:56:38,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 01:56:38,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 01:56:39,546 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 01:56:39,547 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-11-07 01:56:39,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:39 BoogieIcfgContainer [2020-11-07 01:56:39,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 01:56:39,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 01:56:39,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 01:56:39,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 01:56:39,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:56:38" (1/3) ... [2020-11-07 01:56:39,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d26e26f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:39, skipping insertion in model container [2020-11-07 01:56:39,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:38" (2/3) ... [2020-11-07 01:56:39,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d26e26f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:39, skipping insertion in model container [2020-11-07 01:56:39,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:39" (3/3) ... [2020-11-07 01:56:39,562 INFO L111 eAbstractionObserver]: Analyzing ICFG s22iff.c [2020-11-07 01:56:39,578 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 01:56:39,583 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 01:56:39,599 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 01:56:39,633 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 01:56:39,633 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 01:56:39,633 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 01:56:39,633 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 01:56:39,634 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 01:56:39,634 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 01:56:39,634 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 01:56:39,634 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 01:56:39,658 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-11-07 01:56:39,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-07 01:56:39,669 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:39,670 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] [2020-11-07 01:56:39,671 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:39,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:39,678 INFO L82 PathProgramCache]: Analyzing trace with hash -525896098, now seen corresponding path program 1 times [2020-11-07 01:56:39,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:39,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327467825] [2020-11-07 01:56:39,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:39,765 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:39,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:40,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:56:40,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:40,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-07 01:56:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:40,050 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 01:56:40,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [327467825] [2020-11-07 01:56:40,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:56:40,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 01:56:40,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795772498] [2020-11-07 01:56:40,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 01:56:40,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:56:40,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 01:56:40,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 01:56:40,081 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 3 states. [2020-11-07 01:56:40,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:56:40,331 INFO L93 Difference]: Finished difference Result 153 states and 173 transitions. [2020-11-07 01:56:40,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 01:56:40,333 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-11-07 01:56:40,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:56:40,341 INFO L225 Difference]: With dead ends: 153 [2020-11-07 01:56:40,342 INFO L226 Difference]: Without dead ends: 74 [2020-11-07 01:56:40,347 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 01:56:40,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-07 01:56:40,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-11-07 01:56:40,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-07 01:56:40,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2020-11-07 01:56:40,394 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 39 [2020-11-07 01:56:40,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:56:40,395 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2020-11-07 01:56:40,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 01:56:40,395 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2020-11-07 01:56:40,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-07 01:56:40,397 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:40,397 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] [2020-11-07 01:56:40,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 01:56:40,397 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:40,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:40,398 INFO L82 PathProgramCache]: Analyzing trace with hash -2126155324, now seen corresponding path program 1 times [2020-11-07 01:56:40,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:40,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610446639] [2020-11-07 01:56:40,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:40,402 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:40,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:56:40,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:40,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-07 01:56:40,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:40,580 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 01:56:40,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610446639] [2020-11-07 01:56:40,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:56:40,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 01:56:40,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448730933] [2020-11-07 01:56:40,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 01:56:40,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:56:40,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 01:56:40,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-07 01:56:40,584 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand 5 states. [2020-11-07 01:56:40,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:56:40,854 INFO L93 Difference]: Finished difference Result 149 states and 161 transitions. [2020-11-07 01:56:40,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 01:56:40,855 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-11-07 01:56:40,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:56:40,857 INFO L225 Difference]: With dead ends: 149 [2020-11-07 01:56:40,857 INFO L226 Difference]: Without dead ends: 108 [2020-11-07 01:56:40,859 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 01:56:40,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-11-07 01:56:40,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 77. [2020-11-07 01:56:40,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-11-07 01:56:40,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-11-07 01:56:40,876 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 39 [2020-11-07 01:56:40,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:56:40,876 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-11-07 01:56:40,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 01:56:40,877 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-11-07 01:56:40,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-07 01:56:40,879 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:40,879 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] [2020-11-07 01:56:40,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 01:56:40,880 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:40,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:40,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1592075576, now seen corresponding path program 1 times [2020-11-07 01:56:40,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:40,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101794306] [2020-11-07 01:56:40,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:40,954 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 01:56:40,956 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 01:56:41,039 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 01:56:41,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 01:56:41,116 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 01:56:41,177 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 01:56:41,178 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 01:56:41,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 01:56:41,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:56:41 BoogieIcfgContainer [2020-11-07 01:56:41,199 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 01:56:41,202 INFO L168 Benchmark]: Toolchain (without parser) took 2932.19 ms. Allocated memory was 125.8 MB in the beginning and 153.1 MB in the end (delta: 27.3 MB). Free memory was 101.9 MB in the beginning and 123.3 MB in the end (delta: -21.3 MB). Peak memory consumption was 7.0 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:41,203 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory is still 102.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 01:56:41,204 INFO L168 Benchmark]: CACSL2BoogieTranslator took 395.55 ms. Allocated memory is still 125.8 MB. Free memory was 101.3 MB in the beginning and 91.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:41,205 INFO L168 Benchmark]: Boogie Preprocessor took 82.29 ms. Allocated memory is still 125.8 MB. Free memory was 91.2 MB in the beginning and 89.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:41,206 INFO L168 Benchmark]: RCFGBuilder took 788.16 ms. Allocated memory was 125.8 MB in the beginning and 153.1 MB in the end (delta: 27.3 MB). Free memory was 89.6 MB in the beginning and 128.4 MB in the end (delta: -38.8 MB). Peak memory consumption was 17.1 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:41,207 INFO L168 Benchmark]: TraceAbstraction took 1645.16 ms. Allocated memory is still 153.1 MB. Free memory was 127.9 MB in the beginning and 123.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:41,211 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 125.8 MB. Free memory is still 102.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 395.55 ms. Allocated memory is still 125.8 MB. Free memory was 101.3 MB in the beginning and 91.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 82.29 ms. Allocated memory is still 125.8 MB. Free memory was 91.2 MB in the beginning and 89.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 788.16 ms. Allocated memory was 125.8 MB in the beginning and 153.1 MB in the end (delta: 27.3 MB). Free memory was 89.6 MB in the beginning and 128.4 MB in the end (delta: -38.8 MB). Peak memory consumption was 17.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1645.16 ms. Allocated memory is still 153.1 MB. Free memory was 127.9 MB in the beginning and 123.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. 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); [L31] sum[0] = 1 [L32] i=0 [L32] COND TRUE i