/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/brs1f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 11:31:40,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:31:40,983 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:31:40,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:31:40,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:31:40,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:31:40,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:31:41,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:31:41,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:31:41,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:31:41,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:31:41,005 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:31:41,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:31:41,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:31:41,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:31:41,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:31:41,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:31:41,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:31:41,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:31:41,014 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:31:41,016 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:31:41,017 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:31:41,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:31:41,019 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:31:41,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 11:31:41,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 11:31:41,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 11:31:41,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 11:31:41,033 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 [2020-07-07 11:31:41,050 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:31:41,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:31:41,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:31:41,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:31:41,053 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:31:41,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:31:41,053 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:31:41,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:31:41,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:31:41,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:31:41,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:31:41,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:31:41,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:31:41,055 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:31:41,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:31:41,055 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:31:41,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:31:41,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:31:41,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:31:41,056 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:31:41,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:31:41,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:31:41,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:31:41,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:31:41,058 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:31:41,059 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:31:41,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:31:41,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:31:41,059 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:31:41,059 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:31:41,407 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:31:41,431 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:31:41,436 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:31:41,438 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:31:41,438 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:31:41,439 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs1f.c [2020-07-07 11:31:41,522 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9dc84bf3/df82b0ba04194d9595e4e3facb2a5bcd/FLAG59d3a5204 [2020-07-07 11:31:42,002 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:31:42,002 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs1f.c [2020-07-07 11:31:42,009 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9dc84bf3/df82b0ba04194d9595e4e3facb2a5bcd/FLAG59d3a5204 [2020-07-07 11:31:42,351 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9dc84bf3/df82b0ba04194d9595e4e3facb2a5bcd [2020-07-07 11:31:42,363 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:31:42,366 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:31:42,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:31:42,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:31:42,371 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:31:42,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:31:42" (1/1) ... [2020-07-07 11:31:42,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57c73de2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:31:42, skipping insertion in model container [2020-07-07 11:31:42,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:31:42" (1/1) ... [2020-07-07 11:31:42,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:31:42,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:31:42,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:31:42,620 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:31:42,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:31:42,663 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:31:42,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:31:42 WrapperNode [2020-07-07 11:31:42,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:31:42,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:31:42,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:31:42,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:31:42,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:31:42" (1/1) ... [2020-07-07 11:31:42,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:31:42" (1/1) ... [2020-07-07 11:31:42,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:31:42" (1/1) ... [2020-07-07 11:31:42,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:31:42" (1/1) ... [2020-07-07 11:31:42,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:31:42" (1/1) ... [2020-07-07 11:31:42,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:31:42" (1/1) ... [2020-07-07 11:31:42,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:31:42" (1/1) ... [2020-07-07 11:31:42,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:31:42,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:31:42,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:31:42,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:31:42,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:31:42" (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 [2020-07-07 11:31:42,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:31:42,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:31:42,883 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-07 11:31:42,883 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 11:31:42,883 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:31:42,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:31:42,883 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 11:31:42,883 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-07 11:31:42,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 11:31:42,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 11:31:42,884 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 11:31:42,884 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:31:42,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 11:31:42,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 11:31:42,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 11:31:42,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 11:31:42,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 11:31:42,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:31:42,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:31:43,234 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:31:43,235 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-07 11:31:43,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:31:43 BoogieIcfgContainer [2020-07-07 11:31:43,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:31:43,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:31:43,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:31:43,245 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:31:43,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:31:42" (1/3) ... [2020-07-07 11:31:43,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bfc29fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:31:43, skipping insertion in model container [2020-07-07 11:31:43,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:31:42" (2/3) ... [2020-07-07 11:31:43,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bfc29fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:31:43, skipping insertion in model container [2020-07-07 11:31:43,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:31:43" (3/3) ... [2020-07-07 11:31:43,249 INFO L109 eAbstractionObserver]: Analyzing ICFG brs1f.c [2020-07-07 11:31:43,262 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:31:43,273 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 11:31:43,292 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 11:31:43,327 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:31:43,328 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:31:43,328 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:31:43,331 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:31:43,334 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:31:43,335 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:31:43,335 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:31:43,335 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:31:43,369 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-07-07 11:31:43,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-07 11:31:43,376 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:31:43,377 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] [2020-07-07 11:31:43,377 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:31:43,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:31:43,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1824292310, now seen corresponding path program 1 times [2020-07-07 11:31:43,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:31:43,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93649306] [2020-07-07 11:31:43,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:31:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:43,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:43,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:31:43,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93649306] [2020-07-07 11:31:43,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:31:43,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:31:43,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004177446] [2020-07-07 11:31:43,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:31:43,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:31:43,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:31:43,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:31:43,644 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-07-07 11:31:43,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:31:43,766 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2020-07-07 11:31:43,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:31:43,769 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-07-07 11:31:43,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:31:43,779 INFO L225 Difference]: With dead ends: 56 [2020-07-07 11:31:43,780 INFO L226 Difference]: Without dead ends: 26 [2020-07-07 11:31:43,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:31:43,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-07 11:31:43,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-07-07 11:31:43,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-07 11:31:43,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-07-07 11:31:43,835 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 21 [2020-07-07 11:31:43,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:31:43,836 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-07-07 11:31:43,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:31:43,836 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-07-07 11:31:43,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-07 11:31:43,838 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:31:43,838 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] [2020-07-07 11:31:43,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:31:43,839 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:31:43,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:31:43,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1767537087, now seen corresponding path program 1 times [2020-07-07 11:31:43,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:31:43,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610547024] [2020-07-07 11:31:43,841 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:31:43,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:43,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:31:44,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:31:44,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610547024] [2020-07-07 11:31:44,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:31:44,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:31:44,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421782257] [2020-07-07 11:31:44,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:31:44,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:31:44,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:31:44,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:31:44,029 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 5 states. [2020-07-07 11:31:44,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:31:44,215 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2020-07-07 11:31:44,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 11:31:44,216 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-07-07 11:31:44,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:31:44,218 INFO L225 Difference]: With dead ends: 42 [2020-07-07 11:31:44,218 INFO L226 Difference]: Without dead ends: 32 [2020-07-07 11:31:44,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:31:44,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-07 11:31:44,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2020-07-07 11:31:44,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-07 11:31:44,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-07-07 11:31:44,241 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 21 [2020-07-07 11:31:44,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:31:44,241 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-07-07 11:31:44,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:31:44,241 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-07-07 11:31:44,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-07 11:31:44,242 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:31:44,243 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] [2020-07-07 11:31:44,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 11:31:44,243 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:31:44,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:31:44,244 INFO L82 PathProgramCache]: Analyzing trace with hash -395878216, now seen corresponding path program 1 times [2020-07-07 11:31:44,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:31:44,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927295895] [2020-07-07 11:31:44,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:31:44,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 11:31:44,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 11:31:44,342 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-07 11:31:44,342 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 11:31:44,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 11:31:44,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 11:31:44 BoogieIcfgContainer [2020-07-07 11:31:44,399 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 11:31:44,403 INFO L168 Benchmark]: Toolchain (without parser) took 2036.97 ms. Allocated memory was 143.7 MB in the beginning and 217.1 MB in the end (delta: 73.4 MB). Free memory was 101.7 MB in the beginning and 130.0 MB in the end (delta: -28.3 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2020-07-07 11:31:44,404 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 143.7 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-07 11:31:44,406 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.98 ms. Allocated memory is still 143.7 MB. Free memory was 101.4 MB in the beginning and 90.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-07-07 11:31:44,407 INFO L168 Benchmark]: Boogie Preprocessor took 59.13 ms. Allocated memory was 143.7 MB in the beginning and 176.2 MB in the end (delta: 32.5 MB). Free memory was 90.7 MB in the beginning and 146.1 MB in the end (delta: -55.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-07 11:31:44,408 INFO L168 Benchmark]: RCFGBuilder took 515.79 ms. Allocated memory was 176.2 MB in the beginning and 217.1 MB in the end (delta: 40.9 MB). Free memory was 146.1 MB in the beginning and 185.4 MB in the end (delta: -39.4 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2020-07-07 11:31:44,409 INFO L168 Benchmark]: TraceAbstraction took 1158.18 ms. Allocated memory is still 217.1 MB. Free memory was 185.4 MB in the beginning and 130.0 MB in the end (delta: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. [2020-07-07 11:31:44,414 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 143.7 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 296.98 ms. Allocated memory is still 143.7 MB. Free memory was 101.4 MB in the beginning and 90.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 59.13 ms. Allocated memory was 143.7 MB in the beginning and 176.2 MB in the end (delta: 32.5 MB). Free memory was 90.7 MB in the beginning and 146.1 MB in the end (delta: -55.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 515.79 ms. Allocated memory was 176.2 MB in the beginning and 217.1 MB in the end (delta: 40.9 MB). Free memory was 146.1 MB in the beginning and 185.4 MB in the end (delta: -39.4 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1158.18 ms. Allocated memory is still 217.1 MB. Free memory was 185.4 MB in the beginning and 130.0 MB in the end (delta: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [\old(N)=12, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}] [L29] COND TRUE i