/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/array-fpi/condgf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 02:19:50,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:19:50,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:19:50,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 02:19:50,708 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 02:19:50,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 02:19:50,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 02:19:50,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 02:19:50,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 02:19:50,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 02:19:50,733 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 02:19:50,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 02:19:50,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 02:19:50,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 02:19:50,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 02:19:50,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 02:19:50,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 02:19:50,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 02:19:50,762 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 02:19:50,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 02:19:50,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 02:19:50,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 02:19:50,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 02:19:50,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 02:19:50,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 02:19:50,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 02:19:50,785 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 02:19:50,786 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 02:19:50,787 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 02:19:50,799 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:19:50,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:19:50,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:19:50,801 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 02:19:50,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:19:50,802 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 02:19:50,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:19:50,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:19:50,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:19:50,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:19:50,803 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 02:19:50,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:19:50,803 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:19:50,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:19:50,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:19:50,804 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:19:50,804 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:19:50,804 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:19:50,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:19:50,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:19:50,805 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:19:50,805 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:19:50,805 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:19:50,805 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:19:51,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:19:51,168 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:19:51,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:19:51,173 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:19:51,173 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:19:51,174 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condgf.c [2021-02-22 02:19:51,245 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/837e9a93f/0cb59bd6fbbc4ae2806aac04bacc2a8f/FLAG8f457e00d [2021-02-22 02:19:51,773 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:19:51,774 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condgf.c [2021-02-22 02:19:51,787 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/837e9a93f/0cb59bd6fbbc4ae2806aac04bacc2a8f/FLAG8f457e00d [2021-02-22 02:19:52,171 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/837e9a93f/0cb59bd6fbbc4ae2806aac04bacc2a8f [2021-02-22 02:19:52,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:19:52,194 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:19:52,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:19:52,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:19:52,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:19:52,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:19:52" (1/1) ... [2021-02-22 02:19:52,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e38004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:52, skipping insertion in model container [2021-02-22 02:19:52,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:19:52" (1/1) ... [2021-02-22 02:19:52,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:19:52,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:19:52,390 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/condgf.c[589,602] [2021-02-22 02:19:52,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:19:52,425 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:19:52,438 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/condgf.c[589,602] [2021-02-22 02:19:52,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:19:52,465 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:19:52,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:52 WrapperNode [2021-02-22 02:19:52,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:19:52,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:19:52,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:19:52,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:19:52,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:52" (1/1) ... [2021-02-22 02:19:52,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:52" (1/1) ... [2021-02-22 02:19:52,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:52" (1/1) ... [2021-02-22 02:19:52,488 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:52" (1/1) ... [2021-02-22 02:19:52,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:52" (1/1) ... [2021-02-22 02:19:52,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:52" (1/1) ... [2021-02-22 02:19:52,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:52" (1/1) ... [2021-02-22 02:19:52,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:19:52,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:19:52,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:19:52,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:19:52,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:52" (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 [2021-02-22 02:19:52,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:19:52,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:19:52,626 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:19:52,627 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-22 02:19:52,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-22 02:19:52,627 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:19:52,627 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:19:52,628 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:19:52,628 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:19:52,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:19:52,629 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-22 02:19:52,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-22 02:19:52,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 02:19:52,630 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 02:19:52,630 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:19:52,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 02:19:52,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:19:52,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:19:52,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:19:52,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:19:52,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:19:52,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:19:53,005 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:19:53,005 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-22 02:19:53,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:19:53 BoogieIcfgContainer [2021-02-22 02:19:53,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:19:53,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:19:53,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:19:53,012 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:19:53,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:19:52" (1/3) ... [2021-02-22 02:19:53,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30b17d29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:19:53, skipping insertion in model container [2021-02-22 02:19:53,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:52" (2/3) ... [2021-02-22 02:19:53,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30b17d29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:19:53, skipping insertion in model container [2021-02-22 02:19:53,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:19:53" (3/3) ... [2021-02-22 02:19:53,015 INFO L111 eAbstractionObserver]: Analyzing ICFG condgf.c [2021-02-22 02:19:53,024 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:19:53,034 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 02:19:53,062 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 02:19:53,085 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:19:53,085 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:19:53,085 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:19:53,086 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:19:53,086 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:19:53,086 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:19:53,086 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:19:53,086 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:19:53,105 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2021-02-22 02:19:53,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-22 02:19:53,116 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:19:53,117 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] [2021-02-22 02:19:53,117 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:19:53,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:19:53,124 INFO L82 PathProgramCache]: Analyzing trace with hash -2120485220, now seen corresponding path program 1 times [2021-02-22 02:19:53,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:19:53,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683136838] [2021-02-22 02:19:53,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:19:53,216 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:19:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:19:53,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:53,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:53,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:53,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:53,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:19:53,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:19:53,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:53,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:53,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-22 02:19:53,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:19:53,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:53,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:53,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:19:53,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683136838] [2021-02-22 02:19:53,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:19:53,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 02:19:53,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107371642] [2021-02-22 02:19:53,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 02:19:53,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:19:53,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 02:19:53,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 02:19:53,658 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 3 states. [2021-02-22 02:19:53,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:19:53,944 INFO L93 Difference]: Finished difference Result 141 states and 162 transitions. [2021-02-22 02:19:53,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 02:19:53,947 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2021-02-22 02:19:53,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:19:53,959 INFO L225 Difference]: With dead ends: 141 [2021-02-22 02:19:53,959 INFO L226 Difference]: Without dead ends: 72 [2021-02-22 02:19:53,968 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 [2021-02-22 02:19:53,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-02-22 02:19:54,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-02-22 02:19:54,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2021-02-22 02:19:54,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2021-02-22 02:19:54,026 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 40 [2021-02-22 02:19:54,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:19:54,027 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2021-02-22 02:19:54,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 02:19:54,027 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2021-02-22 02:19:54,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-22 02:19:54,029 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:19:54,029 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] [2021-02-22 02:19:54,030 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:19:54,030 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:19:54,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:19:54,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1012737605, now seen corresponding path program 1 times [2021-02-22 02:19:54,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:19:54,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576253769] [2021-02-22 02:19:54,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:19:54,035 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:19:54,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:19:54,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:54,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:54,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:54,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:19:54,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:54,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:19:54,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:54,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:54,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:19:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:19:54,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:54,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:54,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-22 02:19:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:19:54,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:54,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:54,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:19:54,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576253769] [2021-02-22 02:19:54,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:19:54,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-22 02:19:54,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520542809] [2021-02-22 02:19:54,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-22 02:19:54,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:19:54,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-22 02:19:54,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-22 02:19:54,242 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand 5 states. [2021-02-22 02:19:54,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:19:54,559 INFO L93 Difference]: Finished difference Result 142 states and 154 transitions. [2021-02-22 02:19:54,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-22 02:19:54,560 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2021-02-22 02:19:54,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:19:54,564 INFO L225 Difference]: With dead ends: 142 [2021-02-22 02:19:54,564 INFO L226 Difference]: Without dead ends: 103 [2021-02-22 02:19:54,565 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 [2021-02-22 02:19:54,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-02-22 02:19:54,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 75. [2021-02-22 02:19:54,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-02-22 02:19:54,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2021-02-22 02:19:54,586 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 40 [2021-02-22 02:19:54,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:19:54,587 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2021-02-22 02:19:54,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-22 02:19:54,587 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2021-02-22 02:19:54,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-02-22 02:19:54,589 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:19:54,590 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] [2021-02-22 02:19:54,590 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 02:19:54,590 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:19:54,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:19:54,591 INFO L82 PathProgramCache]: Analyzing trace with hash -800271576, now seen corresponding path program 1 times [2021-02-22 02:19:54,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:19:54,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76596270] [2021-02-22 02:19:54,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:19:54,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:54,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-22 02:19:54,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:54,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-22 02:19:54,642 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-22 02:19:54,656 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-22 02:19:54,661 WARN L141 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size [2021-02-22 02:19:54,665 WARN L147 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size 30 [2021-02-22 02:19:54,666 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-22 02:19:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:19:54,731 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:19:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:19:54,770 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:19:54,807 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 02:19:54,807 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 02:19:54,808 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 02:19:54,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 02:19:54 BoogieIcfgContainer [2021-02-22 02:19:54,827 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 02:19:54,828 INFO L168 Benchmark]: Toolchain (without parser) took 2645.88 ms. Allocated memory was 151.0 MB in the beginning and 205.5 MB in the end (delta: 54.5 MB). Free memory was 128.2 MB in the beginning and 155.1 MB in the end (delta: -26.9 MB). Peak memory consumption was 28.2 MB. Max. memory is 8.0 GB. [2021-02-22 02:19:54,829 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 124.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:19:54,830 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.97 ms. Allocated memory is still 151.0 MB. Free memory was 126.9 MB in the beginning and 116.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-22 02:19:54,830 INFO L168 Benchmark]: Boogie Preprocessor took 41.00 ms. Allocated memory is still 151.0 MB. Free memory was 116.9 MB in the beginning and 115.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-22 02:19:54,831 INFO L168 Benchmark]: RCFGBuilder took 498.41 ms. Allocated memory is still 151.0 MB. Free memory was 115.3 MB in the beginning and 130.5 MB in the end (delta: -15.2 MB). Peak memory consumption was 20.8 MB. Max. memory is 8.0 GB. [2021-02-22 02:19:54,832 INFO L168 Benchmark]: TraceAbstraction took 1818.10 ms. Allocated memory was 151.0 MB in the beginning and 205.5 MB in the end (delta: 54.5 MB). Free memory was 130.0 MB in the beginning and 155.1 MB in the end (delta: -25.1 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. [2021-02-22 02:19:54,836 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 124.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 267.97 ms. Allocated memory is still 151.0 MB. Free memory was 126.9 MB in the beginning and 116.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.00 ms. Allocated memory is still 151.0 MB. Free memory was 116.9 MB in the beginning and 115.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 498.41 ms. Allocated memory is still 151.0 MB. Free memory was 115.3 MB in the beginning and 130.5 MB in the end (delta: -15.2 MB). Peak memory consumption was 20.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1818.10 ms. Allocated memory was 151.0 MB in the beginning and 205.5 MB in the end (delta: 54.5 MB). Free memory was 130.0 MB in the beginning and 155.1 MB in the end (delta: -25.1 MB). Peak memory consumption was 29.4 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] = 0 [L32] i=0 [L32] COND TRUE i