/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/res1of.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:44:25,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:44:25,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:44:25,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:44:25,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:44:25,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:44:25,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:44:25,461 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:44:25,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:44:25,471 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:44:25,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:44:25,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2020-11-06 22:44:25,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:44:25,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:44:25,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:44:25,555 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-06 22:44:25,620 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:44:25,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:44:25,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:44:25,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:44:25,626 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:44:25,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:44:25,627 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:44:25,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:44:25,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:44:25,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:44:25,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:44:25,629 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:44:25,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:44:25,630 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:44:25,630 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:44:25,630 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:44:25,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:44:25,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:44:25,631 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:44:25,631 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:44:25,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:44:25,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:44:25,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:44:25,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:44:25,633 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:44:25,633 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:44:25,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:44:25,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:44:25,634 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:44:25,634 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:44:26,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:44:26,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:44:26,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:44:26,112 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:44:26,113 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:44:26,114 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res1of.c [2020-11-06 22:44:26,213 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cb91aa16/d81eef6c51ef48fab018836d8786bc23/FLAG2f31bcf5f [2020-11-06 22:44:26,982 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:44:26,983 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/res1of.c [2020-11-06 22:44:26,992 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cb91aa16/d81eef6c51ef48fab018836d8786bc23/FLAG2f31bcf5f [2020-11-06 22:44:27,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cb91aa16/d81eef6c51ef48fab018836d8786bc23 [2020-11-06 22:44:27,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:44:27,315 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:44:27,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:44:27,320 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:44:27,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:44:27,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:27" (1/1) ... [2020-11-06 22:44:27,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37da46ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:27, skipping insertion in model container [2020-11-06 22:44:27,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:27" (1/1) ... [2020-11-06 22:44:27,343 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:44:27,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:44:27,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:44:27,578 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:44:27,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:44:27,657 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:44:27,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:27 WrapperNode [2020-11-06 22:44:27,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:44:27,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:44:27,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:44:27,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:44:27,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:27" (1/1) ... [2020-11-06 22:44:27,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:27" (1/1) ... [2020-11-06 22:44:27,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:27" (1/1) ... [2020-11-06 22:44:27,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:27" (1/1) ... [2020-11-06 22:44:27,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:27" (1/1) ... [2020-11-06 22:44:27,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:27" (1/1) ... [2020-11-06 22:44:27,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:27" (1/1) ... [2020-11-06 22:44:27,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:44:27,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:44:27,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:44:27,763 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:44:27,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:44:27,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:44:27,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:44:27,877 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:44:27,878 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-06 22:44:27,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:44:27,878 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:44:27,878 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:44:27,878 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:44:27,879 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:44:27,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:44:27,879 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-06 22:44:27,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:44:27,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:44:27,881 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-06 22:44:27,881 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:44:27,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-06 22:44:27,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:44:27,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:44:27,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:44:27,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:44:27,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:44:27,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:44:28,471 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:44:28,472 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-06 22:44:28,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:28 BoogieIcfgContainer [2020-11-06 22:44:28,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:44:28,479 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:44:28,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:44:28,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:44:28,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:44:27" (1/3) ... [2020-11-06 22:44:28,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33e33758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:28, skipping insertion in model container [2020-11-06 22:44:28,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:27" (2/3) ... [2020-11-06 22:44:28,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33e33758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:28, skipping insertion in model container [2020-11-06 22:44:28,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:28" (3/3) ... [2020-11-06 22:44:28,491 INFO L111 eAbstractionObserver]: Analyzing ICFG res1of.c [2020-11-06 22:44:28,510 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:44:28,515 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:44:28,529 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:44:28,575 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:44:28,575 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:44:28,576 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:44:28,576 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:44:28,576 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:44:28,576 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:44:28,576 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:44:28,576 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:44:28,599 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-11-06 22:44:28,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-06 22:44:28,612 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:28,613 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] [2020-11-06 22:44:28,614 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:28,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:28,632 INFO L82 PathProgramCache]: Analyzing trace with hash -181434534, now seen corresponding path program 1 times [2020-11-06 22:44:28,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:28,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021957878] [2020-11-06 22:44:28,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:28,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:28,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:44:28,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:29,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:44:29,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:29,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:44:29,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021957878] [2020-11-06 22:44:29,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:44:29,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 22:44:29,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838661588] [2020-11-06 22:44:29,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:44:29,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:29,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:44:29,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:44:29,055 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 3 states. [2020-11-06 22:44:29,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:29,208 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2020-11-06 22:44:29,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:44:29,210 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-11-06 22:44:29,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:29,220 INFO L225 Difference]: With dead ends: 69 [2020-11-06 22:44:29,220 INFO L226 Difference]: Without dead ends: 31 [2020-11-06 22:44:29,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:44:29,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-06 22:44:29,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-06 22:44:29,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-06 22:44:29,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-11-06 22:44:29,275 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 26 [2020-11-06 22:44:29,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:29,275 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-11-06 22:44:29,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:44:29,276 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-11-06 22:44:29,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-06 22:44:29,277 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:29,277 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] [2020-11-06 22:44:29,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:44:29,278 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:29,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:29,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1769782436, now seen corresponding path program 1 times [2020-11-06 22:44:29,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:29,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022532320] [2020-11-06 22:44:29,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:29,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:44:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:29,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:44:29,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:29,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:44:29,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022532320] [2020-11-06 22:44:29,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:44:29,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-06 22:44:29,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401942265] [2020-11-06 22:44:29,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 22:44:29,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:29,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 22:44:29,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:44:29,509 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 5 states. [2020-11-06 22:44:29,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:29,791 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2020-11-06 22:44:29,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 22:44:29,792 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-11-06 22:44:29,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:29,794 INFO L225 Difference]: With dead ends: 55 [2020-11-06 22:44:29,794 INFO L226 Difference]: Without dead ends: 39 [2020-11-06 22:44:29,795 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 [2020-11-06 22:44:29,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-06 22:44:29,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2020-11-06 22:44:29,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-06 22:44:29,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-11-06 22:44:29,808 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 26 [2020-11-06 22:44:29,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:29,809 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-11-06 22:44:29,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 22:44:29,809 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-11-06 22:44:29,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-06 22:44:29,811 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:29,811 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] [2020-11-06 22:44:29,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:44:29,811 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:29,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:29,812 INFO L82 PathProgramCache]: Analyzing trace with hash -697842092, now seen corresponding path program 1 times [2020-11-06 22:44:29,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:29,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756793756] [2020-11-06 22:44:29,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:44:29,931 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:44:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:44:30,027 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:44:30,070 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 22:44:30,070 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 22:44:30,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 22:44:30,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:44:30 BoogieIcfgContainer [2020-11-06 22:44:30,128 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:44:30,131 INFO L168 Benchmark]: Toolchain (without parser) took 2819.82 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 55.1 MB in the end (delta: 71.3 MB). Peak memory consumption was 70.8 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:30,132 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:44:30,133 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.83 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 115.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:30,134 INFO L168 Benchmark]: Boogie Preprocessor took 97.85 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 114.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:30,135 INFO L168 Benchmark]: RCFGBuilder took 712.63 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 130.1 MB in the end (delta: -15.9 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:30,136 INFO L168 Benchmark]: TraceAbstraction took 1648.56 ms. Allocated memory is still 151.0 MB. Free memory was 129.6 MB in the beginning and 55.1 MB in the end (delta: 74.4 MB). Peak memory consumption was 74.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:30,141 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 341.83 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 115.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 97.85 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 114.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 712.63 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 130.1 MB in the end (delta: -15.9 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1648.56 ms. Allocated memory is still 151.0 MB. Free memory was 129.6 MB in the beginning and 55.1 MB in the end (delta: 74.4 MB). Peak memory consumption was 74.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=51, N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L30] int *b = malloc(sizeof(int)*N); [L32] sum[0] = 0 [L33] i=0 VAL [\old(N)=0, a={-1:0}, b={-2:0}, i=0, malloc(sizeof(int)*N)={-2:0}, malloc(sizeof(int)*N)={-1:0}, N=1, sum={3:0}] [L33] COND TRUE i