/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/modnf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:16:34,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:16:34,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:16:34,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 21:16:34,599 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 21:16:34,600 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 21:16:34,602 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 21:16:34,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 21:16:34,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 21:16:34,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 21:16:34,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 21:16:34,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 21:16:34,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:16:34,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:16:34,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:16:34,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:16:34,628 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:16:34,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:16:34,631 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:16:34,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:16:34,638 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:16:34,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:16:34,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:16:34,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:16:34,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:16:34,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:16:34,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:16:34,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:16:34,674 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 21:16:34,697 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:16:34,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:16:34,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:16:34,702 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:16:34,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:16:34,702 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:16:34,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:16:34,703 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:16:34,703 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:16:34,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:16:34,704 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:16:34,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:16:34,705 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:16:34,705 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:16:34,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:16:34,705 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:16:34,705 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:16:34,706 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:16:34,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:16:34,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:16:34,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:16:34,706 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:16:34,707 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:16:35,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:16:35,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:16:35,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:16:35,126 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:16:35,128 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:16:35,129 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/modnf.c [2021-02-21 21:16:35,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d24a048a6/6311004669bd475abf45d39c57fe47a8/FLAG31f0089bd [2021-02-21 21:16:35,858 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:16:35,859 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/modnf.c [2021-02-21 21:16:35,868 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d24a048a6/6311004669bd475abf45d39c57fe47a8/FLAG31f0089bd [2021-02-21 21:16:36,203 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d24a048a6/6311004669bd475abf45d39c57fe47a8 [2021-02-21 21:16:36,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:16:36,223 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:16:36,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:16:36,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:16:36,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:16:36,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:16:36" (1/1) ... [2021-02-21 21:16:36,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e9a31ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:36, skipping insertion in model container [2021-02-21 21:16:36,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:16:36" (1/1) ... [2021-02-21 21:16:36,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:16:36,263 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:16:36,453 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/modnf.c[588,601] [2021-02-21 21:16:36,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:16:36,490 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:16:36,510 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/modnf.c[588,601] [2021-02-21 21:16:36,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:16:36,558 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:16:36,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:36 WrapperNode [2021-02-21 21:16:36,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:16:36,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:16:36,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:16:36,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:16:36,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:36" (1/1) ... [2021-02-21 21:16:36,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:36" (1/1) ... [2021-02-21 21:16:36,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:36" (1/1) ... [2021-02-21 21:16:36,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:36" (1/1) ... [2021-02-21 21:16:36,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:36" (1/1) ... [2021-02-21 21:16:36,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:36" (1/1) ... [2021-02-21 21:16:36,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:36" (1/1) ... [2021-02-21 21:16:36,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:16:36,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:16:36,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:16:36,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:16:36,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:36" (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 [2021-02-21 21:16:36,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:16:36,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:16:36,793 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:16:36,794 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 21:16:36,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 21:16:36,795 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:16:36,795 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:16:36,795 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:16:36,796 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:16:36,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:16:36,797 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 21:16:36,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:16:36,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 21:16:36,798 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 21:16:36,799 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:16:36,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 21:16:36,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:16:36,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:16:36,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:16:36,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:16:36,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:16:36,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:16:37,475 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:16:37,475 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-21 21:16:37,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:16:37 BoogieIcfgContainer [2021-02-21 21:16:37,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:16:37,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:16:37,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:16:37,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:16:37,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:16:36" (1/3) ... [2021-02-21 21:16:37,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c3c4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:16:37, skipping insertion in model container [2021-02-21 21:16:37,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:36" (2/3) ... [2021-02-21 21:16:37,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c3c4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:16:37, skipping insertion in model container [2021-02-21 21:16:37,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:16:37" (3/3) ... [2021-02-21 21:16:37,488 INFO L111 eAbstractionObserver]: Analyzing ICFG modnf.c [2021-02-21 21:16:37,500 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:16:37,506 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:16:37,529 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:16:37,565 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:16:37,565 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:16:37,566 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:16:37,566 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:16:37,566 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:16:37,566 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:16:37,566 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:16:37,567 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:16:37,590 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2021-02-21 21:16:37,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-21 21:16:37,604 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:37,606 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] [2021-02-21 21:16:37,606 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:37,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:37,615 INFO L82 PathProgramCache]: Analyzing trace with hash -774145788, now seen corresponding path program 1 times [2021-02-21 21:16:37,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:37,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743296739] [2021-02-21 21:16:37,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:37,720 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:37,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:37,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:37,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:37,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:37,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:16:37,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:37,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:37,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:37,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-21 21:16:37,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:37,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:37,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:37,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:16:37,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743296739] [2021-02-21 21:16:37,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:16:37,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 21:16:37,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269180554] [2021-02-21 21:16:37,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 21:16:37,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:16:38,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 21:16:38,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:16:38,013 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 3 states. [2021-02-21 21:16:38,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:16:38,219 INFO L93 Difference]: Finished difference Result 111 states and 126 transitions. [2021-02-21 21:16:38,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 21:16:38,221 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2021-02-21 21:16:38,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:16:38,230 INFO L225 Difference]: With dead ends: 111 [2021-02-21 21:16:38,230 INFO L226 Difference]: Without dead ends: 57 [2021-02-21 21:16:38,234 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 [2021-02-21 21:16:38,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-02-21 21:16:38,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-02-21 21:16:38,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-02-21 21:16:38,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2021-02-21 21:16:38,286 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 38 [2021-02-21 21:16:38,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:16:38,287 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2021-02-21 21:16:38,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 21:16:38,287 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2021-02-21 21:16:38,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-21 21:16:38,289 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:38,289 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] [2021-02-21 21:16:38,289 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:16:38,290 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:38,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:38,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1387502767, now seen corresponding path program 1 times [2021-02-21 21:16:38,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:38,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128485217] [2021-02-21 21:16:38,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:38,294 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:38,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:38,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:38,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:38,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:38,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:16:38,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:38,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:16:38,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:38,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:38,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:16:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:38,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:38,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:38,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-21 21:16:38,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:38,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:38,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:38,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:16:38,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128485217] [2021-02-21 21:16:38,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:16:38,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 21:16:38,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884703412] [2021-02-21 21:16:38,476 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 21:16:38,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:16:38,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 21:16:38,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 21:16:38,478 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 5 states. [2021-02-21 21:16:38,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:16:38,822 INFO L93 Difference]: Finished difference Result 97 states and 103 transitions. [2021-02-21 21:16:38,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 21:16:38,823 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2021-02-21 21:16:38,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:16:38,827 INFO L225 Difference]: With dead ends: 97 [2021-02-21 21:16:38,827 INFO L226 Difference]: Without dead ends: 75 [2021-02-21 21:16:38,828 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 [2021-02-21 21:16:38,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-02-21 21:16:38,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 59. [2021-02-21 21:16:38,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-02-21 21:16:38,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2021-02-21 21:16:38,849 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 38 [2021-02-21 21:16:38,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:16:38,849 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2021-02-21 21:16:38,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 21:16:38,849 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2021-02-21 21:16:38,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-21 21:16:38,851 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:38,851 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] [2021-02-21 21:16:38,852 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:16:38,852 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:38,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:38,853 INFO L82 PathProgramCache]: Analyzing trace with hash 388403656, now seen corresponding path program 1 times [2021-02-21 21:16:38,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:38,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614487850] [2021-02-21 21:16:38,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:38,880 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:16:38,882 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:38,904 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-02-21 21:16:38,905 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 21:16:38,909 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:16:38,927 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-02-21 21:16:38,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:16:38 BoogieIcfgContainer [2021-02-21 21:16:38,928 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:16:38,930 INFO L168 Benchmark]: Toolchain (without parser) took 2718.47 ms. Allocated memory was 167.8 MB in the beginning and 221.2 MB in the end (delta: 53.5 MB). Free memory was 143.6 MB in the beginning and 181.1 MB in the end (delta: -37.4 MB). Peak memory consumption was 16.7 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:38,931 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 167.8 MB. Free memory was 140.5 MB in the beginning and 140.4 MB in the end (delta: 101.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:16:38,932 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.84 ms. Allocated memory is still 167.8 MB. Free memory was 142.4 MB in the beginning and 132.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:38,933 INFO L168 Benchmark]: Boogie Preprocessor took 81.92 ms. Allocated memory is still 167.8 MB. Free memory was 132.2 MB in the beginning and 130.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:38,934 INFO L168 Benchmark]: RCFGBuilder took 834.90 ms. Allocated memory is still 167.8 MB. Free memory was 130.4 MB in the beginning and 146.3 MB in the end (delta: -15.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:38,935 INFO L168 Benchmark]: TraceAbstraction took 1448.01 ms. Allocated memory was 167.8 MB in the beginning and 221.2 MB in the end (delta: 53.5 MB). Free memory was 145.8 MB in the beginning and 181.1 MB in the end (delta: -35.3 MB). Peak memory consumption was 18.7 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:38,939 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 167.8 MB. Free memory was 140.5 MB in the beginning and 140.4 MB in the end (delta: 101.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 331.84 ms. Allocated memory is still 167.8 MB. Free memory was 142.4 MB in the beginning and 132.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 81.92 ms. Allocated memory is still 167.8 MB. Free memory was 132.2 MB in the beginning and 130.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 834.90 ms. Allocated memory is still 167.8 MB. Free memory was 130.4 MB in the beginning and 146.3 MB in the end (delta: -15.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1448.01 ms. Allocated memory was 167.8 MB in the beginning and 221.2 MB in the end (delta: 53.5 MB). Free memory was 145.8 MB in the beginning and 181.1 MB in the end (delta: -35.3 MB). Peak memory consumption was 18.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] int sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 0 [L32] i=0 [L32] COND TRUE i