/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/sina4f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:47:34,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:47:34,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:47:34,594 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 18:47:34,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:47:34,631 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:47:34,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:47:34,644 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:47:34,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:47:34,650 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:47:34,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:47:34,666 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:47:34,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:47:34,670 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:47:34,673 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:47:34,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:47:34,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 18:47:34,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:47:34,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:47:34,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:47:34,701 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 18:47:34,724 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:47:34,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:47:34,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:47:34,730 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:47:34,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:47:34,730 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:47:34,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:47:34,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:47:34,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:47:34,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:47:34,733 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:47:34,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:47:34,733 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:47:34,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:47:34,735 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:47:34,735 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:47:34,735 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:47:34,735 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:47:34,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:47:34,736 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:47:34,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:47:34,737 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:47:34,737 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:47:35,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:47:35,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:47:35,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:47:35,192 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:47:35,193 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:47:35,194 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina4f.c [2021-02-23 18:47:35,291 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e00a254e5/6d98d5e646454ca6aade1f3fb0645844/FLAGfe5e2b54d [2021-02-23 18:47:36,029 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:47:36,030 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina4f.c [2021-02-23 18:47:36,043 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e00a254e5/6d98d5e646454ca6aade1f3fb0645844/FLAGfe5e2b54d [2021-02-23 18:47:36,410 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e00a254e5/6d98d5e646454ca6aade1f3fb0645844 [2021-02-23 18:47:36,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:47:36,429 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:47:36,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:47:36,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:47:36,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:47:36,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:47:36" (1/1) ... [2021-02-23 18:47:36,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@390832b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:36, skipping insertion in model container [2021-02-23 18:47:36,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:47:36" (1/1) ... [2021-02-23 18:47:36,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:47:36,476 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:47:36,710 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/sina4f.c[589,602] [2021-02-23 18:47:36,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:47:36,761 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:47:36,777 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/sina4f.c[589,602] [2021-02-23 18:47:36,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:47:36,830 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:47:36,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:36 WrapperNode [2021-02-23 18:47:36,830 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:47:36,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:47:36,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:47:36,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:47:36,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:36" (1/1) ... [2021-02-23 18:47:36,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:36" (1/1) ... [2021-02-23 18:47:36,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:36" (1/1) ... [2021-02-23 18:47:36,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:36" (1/1) ... [2021-02-23 18:47:36,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:36" (1/1) ... [2021-02-23 18:47:36,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:36" (1/1) ... [2021-02-23 18:47:36,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:36" (1/1) ... [2021-02-23 18:47:36,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:47:36,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:47:36,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:47:36,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:47:36,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:36" (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 [2021-02-23 18:47:36,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:47:36,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:47:37,000 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:47:37,000 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 18:47:37,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 18:47:37,001 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:47:37,001 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:47:37,001 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:47:37,002 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:47:37,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:47:37,003 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 18:47:37,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 18:47:37,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:47:37,003 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 18:47:37,004 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:47:37,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 18:47:37,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:47:37,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:47:37,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:47:37,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:47:37,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:47:37,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:47:37,600 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:47:37,600 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 18:47:37,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:47:37 BoogieIcfgContainer [2021-02-23 18:47:37,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:47:37,604 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:47:37,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:47:37,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:47:37,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:47:36" (1/3) ... [2021-02-23 18:47:37,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37048094 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:47:37, skipping insertion in model container [2021-02-23 18:47:37,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:36" (2/3) ... [2021-02-23 18:47:37,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37048094 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:47:37, skipping insertion in model container [2021-02-23 18:47:37,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:47:37" (3/3) ... [2021-02-23 18:47:37,613 INFO L111 eAbstractionObserver]: Analyzing ICFG sina4f.c [2021-02-23 18:47:37,620 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:47:37,625 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:47:37,647 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:47:37,674 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:47:37,674 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:47:37,674 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:47:37,674 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:47:37,674 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:47:37,674 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:47:37,675 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:47:37,675 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:47:37,694 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2021-02-23 18:47:37,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-23 18:47:37,706 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:47:37,707 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] [2021-02-23 18:47:37,708 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:47:37,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:47:37,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1103870, now seen corresponding path program 1 times [2021-02-23 18:47:37,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:47:37,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631839222] [2021-02-23 18:47:37,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:47:37,815 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:47:37,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:38,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:38,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:38,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:38,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:38,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:47:38,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:38,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:38,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:38,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:47:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:38,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:38,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:38,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:47:38,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631839222] [2021-02-23 18:47:38,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:47:38,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 18:47:38,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428037350] [2021-02-23 18:47:38,169 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 18:47:38,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:47:38,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 18:47:38,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:47:38,197 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 3 states. [2021-02-23 18:47:38,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:47:38,478 INFO L93 Difference]: Finished difference Result 151 states and 174 transitions. [2021-02-23 18:47:38,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 18:47:38,480 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2021-02-23 18:47:38,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:47:38,489 INFO L225 Difference]: With dead ends: 151 [2021-02-23 18:47:38,489 INFO L226 Difference]: Without dead ends: 77 [2021-02-23 18:47:38,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:47:38,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-02-23 18:47:38,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-02-23 18:47:38,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-02-23 18:47:38,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2021-02-23 18:47:38,565 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 44 [2021-02-23 18:47:38,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:47:38,566 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2021-02-23 18:47:38,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 18:47:38,566 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2021-02-23 18:47:38,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-23 18:47:38,568 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:47:38,569 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] [2021-02-23 18:47:38,569 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:47:38,570 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:47:38,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:47:38,571 INFO L82 PathProgramCache]: Analyzing trace with hash 564734934, now seen corresponding path program 1 times [2021-02-23 18:47:38,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:47:38,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795793876] [2021-02-23 18:47:38,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:47:38,575 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:47:38,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:38,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:38,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:38,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:38,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:47:38,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:38,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:47:38,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:38,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:38,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:47:38,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:38,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:38,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:38,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:47:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:38,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:38,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:38,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:47:38,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795793876] [2021-02-23 18:47:38,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:47:38,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 18:47:38,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346668664] [2021-02-23 18:47:38,799 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 18:47:38,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:47:38,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 18:47:38,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 18:47:38,802 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 5 states. [2021-02-23 18:47:39,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:47:39,308 INFO L93 Difference]: Finished difference Result 151 states and 163 transitions. [2021-02-23 18:47:39,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 18:47:39,309 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2021-02-23 18:47:39,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:47:39,313 INFO L225 Difference]: With dead ends: 151 [2021-02-23 18:47:39,313 INFO L226 Difference]: Without dead ends: 109 [2021-02-23 18:47:39,315 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 [2021-02-23 18:47:39,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-02-23 18:47:39,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 81. [2021-02-23 18:47:39,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-02-23 18:47:39,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2021-02-23 18:47:39,336 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 44 [2021-02-23 18:47:39,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:47:39,336 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2021-02-23 18:47:39,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 18:47:39,337 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2021-02-23 18:47:39,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-02-23 18:47:39,339 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:47:39,340 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:47:39,340 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:47:39,340 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:47:39,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:47:39,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1978493271, now seen corresponding path program 1 times [2021-02-23 18:47:39,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:47:39,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24518576] [2021-02-23 18:47:39,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:47:39,369 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:47:39,371 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:47:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:47:39,434 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:47:39,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:47:39,493 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:47:39,562 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 18:47:39,563 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 18:47:39,563 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:47:39,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:47:39 BoogieIcfgContainer [2021-02-23 18:47:39,585 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:47:39,587 INFO L168 Benchmark]: Toolchain (without parser) took 3170.62 ms. Allocated memory was 173.0 MB in the beginning and 223.3 MB in the end (delta: 50.3 MB). Free memory was 148.7 MB in the beginning and 134.3 MB in the end (delta: 14.4 MB). Peak memory consumption was 65.7 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:39,588 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 173.0 MB. Free memory is still 146.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:47:39,589 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.59 ms. Allocated memory is still 173.0 MB. Free memory was 147.6 MB in the beginning and 137.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:39,590 INFO L168 Benchmark]: Boogie Preprocessor took 46.08 ms. Allocated memory is still 173.0 MB. Free memory was 137.4 MB in the beginning and 135.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:39,591 INFO L168 Benchmark]: RCFGBuilder took 723.90 ms. Allocated memory is still 173.0 MB. Free memory was 135.7 MB in the beginning and 146.4 MB in the end (delta: -10.7 MB). Peak memory consumption was 17.9 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:39,592 INFO L168 Benchmark]: TraceAbstraction took 1980.92 ms. Allocated memory was 173.0 MB in the beginning and 223.3 MB in the end (delta: 50.3 MB). Free memory was 145.9 MB in the beginning and 134.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 61.4 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:39,595 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 173.0 MB. Free memory is still 146.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 394.59 ms. Allocated memory is still 173.0 MB. Free memory was 147.6 MB in the beginning and 137.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 46.08 ms. Allocated memory is still 173.0 MB. Free memory was 137.4 MB in the beginning and 135.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 723.90 ms. Allocated memory is still 173.0 MB. Free memory was 135.7 MB in the beginning and 146.4 MB in the end (delta: -10.7 MB). Peak memory consumption was 17.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1980.92 ms. Allocated memory was 173.0 MB in the beginning and 223.3 MB in the end (delta: 50.3 MB). Free memory was 145.9 MB in the beginning and 134.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 61.4 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] long long *a = malloc(sizeof(long long)*N); [L30] long long *b = malloc(sizeof(long long)*N); [L32] sum[0] = 0 [L33] i=0 [L33] COND TRUE i