/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/ss2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:42:54,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:42:54,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:42:54,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:42:54,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:42:54,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:42:54,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:42:54,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:42:54,509 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:42:54,512 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:42:54,513 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:42:54,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:42:54,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:42:54,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:42:54,521 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:42:54,523 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:42:54,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:42:54,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:42:54,527 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:42:54,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:42:54,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:42:54,539 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:42:54,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:42:54,542 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:42:54,554 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 13:42:54,554 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 13:42:54,554 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 13:42:54,563 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 13:42:54,564 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 13:42:54,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 13:42:54,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 13:42:54,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 13:42:54,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 13:42:54,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 13:42:54,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 13:42:54,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 13:42:54,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 13:42:54,571 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 13:42:54,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:42:54,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:42:54,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:42:54,574 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 13:42:54,601 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:42:54,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:42:54,602 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:42:54,603 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:42:54,603 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:42:54,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:42:54,603 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:42:54,604 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:42:54,604 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:42:54,604 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:42:54,604 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:42:54,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:42:54,605 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:42:54,605 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:42:54,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:42:54,605 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:42:54,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:42:54,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:42:54,606 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:42:54,606 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:42:54,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:42:54,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:42:54,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:42:54,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:42:54,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:42:54,607 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:42:54,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:42:54,608 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:42:54,608 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:42:54,608 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:42:55,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:42:55,100 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:42:55,103 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:42:55,105 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:42:55,106 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:42:55,107 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss2f.c [2020-09-04 13:42:55,207 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/85920f7dd/b321d517a552474a89805d8a7dafcad3/FLAGee3e6a3a8 [2020-09-04 13:42:55,761 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:42:55,762 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ss2f.c [2020-09-04 13:42:55,771 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/85920f7dd/b321d517a552474a89805d8a7dafcad3/FLAGee3e6a3a8 [2020-09-04 13:42:56,117 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/85920f7dd/b321d517a552474a89805d8a7dafcad3 [2020-09-04 13:42:56,132 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:42:56,134 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:42:56,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:42:56,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:42:56,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:42:56,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:42:56" (1/1) ... [2020-09-04 13:42:56,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69107900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:56, skipping insertion in model container [2020-09-04 13:42:56,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:42:56" (1/1) ... [2020-09-04 13:42:56,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:42:56,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:42:56,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:42:56,458 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:42:56,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:42:56,504 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:42:56,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:56 WrapperNode [2020-09-04 13:42:56,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:42:56,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:42:56,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:42:56,506 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:42:56,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:56" (1/1) ... [2020-09-04 13:42:56,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:56" (1/1) ... [2020-09-04 13:42:56,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:56" (1/1) ... [2020-09-04 13:42:56,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:56" (1/1) ... [2020-09-04 13:42:56,632 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:56" (1/1) ... [2020-09-04 13:42:56,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:56" (1/1) ... [2020-09-04 13:42:56,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:56" (1/1) ... [2020-09-04 13:42:56,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:42:56,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:42:56,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:42:56,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:42:56,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:42:56,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:42:56,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:42:56,737 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 13:42:56,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 13:42:56,737 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:42:56,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:42:56,738 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 13:42:56,738 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 13:42:56,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 13:42:56,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:42:56,738 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 13:42:56,739 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:42:56,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 13:42:56,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 13:42:56,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 13:42:56,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 13:42:56,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 13:42:56,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:42:56,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:42:57,091 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:42:57,091 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-09-04 13:42:57,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:42:57 BoogieIcfgContainer [2020-09-04 13:42:57,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:42:57,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:42:57,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:42:57,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:42:57,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:42:56" (1/3) ... [2020-09-04 13:42:57,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d91d8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:42:57, skipping insertion in model container [2020-09-04 13:42:57,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:56" (2/3) ... [2020-09-04 13:42:57,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d91d8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:42:57, skipping insertion in model container [2020-09-04 13:42:57,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:42:57" (3/3) ... [2020-09-04 13:42:57,107 INFO L109 eAbstractionObserver]: Analyzing ICFG ss2f.c [2020-09-04 13:42:57,120 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:42:57,130 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:42:57,155 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:42:57,188 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:42:57,189 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:42:57,189 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:42:57,189 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:42:57,189 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:42:57,189 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:42:57,189 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:42:57,190 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:42:57,216 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-09-04 13:42:57,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-04 13:42:57,224 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:57,225 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] [2020-09-04 13:42:57,226 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:57,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:57,233 INFO L82 PathProgramCache]: Analyzing trace with hash -96589013, now seen corresponding path program 1 times [2020-09-04 13:42:57,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:57,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700166338] [2020-09-04 13:42:57,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:57,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:42:57,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:57,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:42:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:57,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:42:57,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700166338] [2020-09-04 13:42:57,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:42:57,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:42:57,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72032782] [2020-09-04 13:42:57,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:42:57,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:57,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:42:57,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:42:57,528 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2020-09-04 13:42:57,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:57,721 INFO L93 Difference]: Finished difference Result 82 states and 113 transitions. [2020-09-04 13:42:57,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:42:57,723 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-09-04 13:42:57,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:57,736 INFO L225 Difference]: With dead ends: 82 [2020-09-04 13:42:57,736 INFO L226 Difference]: Without dead ends: 41 [2020-09-04 13:42:57,741 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 [2020-09-04 13:42:57,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-04 13:42:57,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-09-04 13:42:57,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-04 13:42:57,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-09-04 13:42:57,802 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 30 [2020-09-04 13:42:57,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:57,802 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-09-04 13:42:57,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:42:57,803 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-09-04 13:42:57,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-04 13:42:57,804 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:57,805 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] [2020-09-04 13:42:57,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:42:57,806 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:57,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:57,806 INFO L82 PathProgramCache]: Analyzing trace with hash -552343525, now seen corresponding path program 1 times [2020-09-04 13:42:57,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:57,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764232031] [2020-09-04 13:42:57,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:57,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:57,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:42:57,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:57,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:42:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:57,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:42:57,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764232031] [2020-09-04 13:42:57,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:42:57,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 13:42:57,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460027256] [2020-09-04 13:42:57,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:42:57,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:57,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:42:57,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:42:57,981 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 5 states. [2020-09-04 13:42:58,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:58,206 INFO L93 Difference]: Finished difference Result 83 states and 101 transitions. [2020-09-04 13:42:58,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 13:42:58,207 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-04 13:42:58,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:58,211 INFO L225 Difference]: With dead ends: 83 [2020-09-04 13:42:58,211 INFO L226 Difference]: Without dead ends: 57 [2020-09-04 13:42:58,213 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 [2020-09-04 13:42:58,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-04 13:42:58,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 47. [2020-09-04 13:42:58,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-04 13:42:58,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-09-04 13:42:58,233 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 30 [2020-09-04 13:42:58,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:58,234 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-09-04 13:42:58,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:42:58,237 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-09-04 13:42:58,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-04 13:42:58,239 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:58,239 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] [2020-09-04 13:42:58,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 13:42:58,240 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:58,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:58,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1488976591, now seen corresponding path program 1 times [2020-09-04 13:42:58,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:58,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157358479] [2020-09-04 13:42:58,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:58,308 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:42:58,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [196946140] [2020-09-04 13:42:58,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:42:58,402 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:42:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:42:58,433 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:42:58,473 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-04 13:42:58,473 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 13:42:58,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-09-04 13:42:58,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:42:58 BoogieIcfgContainer [2020-09-04 13:42:58,739 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:42:58,743 INFO L168 Benchmark]: Toolchain (without parser) took 2607.47 ms. Allocated memory was 146.8 MB in the beginning and 234.9 MB in the end (delta: 88.1 MB). Free memory was 103.1 MB in the beginning and 188.8 MB in the end (delta: -85.7 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:58,744 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 13:42:58,745 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.99 ms. Allocated memory is still 146.8 MB. Free memory was 102.8 MB in the beginning and 91.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:58,746 INFO L168 Benchmark]: Boogie Preprocessor took 140.62 ms. Allocated memory was 146.8 MB in the beginning and 201.9 MB in the end (delta: 55.1 MB). Free memory was 91.9 MB in the beginning and 179.0 MB in the end (delta: -87.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:58,747 INFO L168 Benchmark]: RCFGBuilder took 450.80 ms. Allocated memory is still 201.9 MB. Free memory was 179.0 MB in the beginning and 158.7 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:58,748 INFO L168 Benchmark]: TraceAbstraction took 1640.67 ms. Allocated memory was 201.9 MB in the beginning and 234.9 MB in the end (delta: 33.0 MB). Free memory was 158.0 MB in the beginning and 188.8 MB in the end (delta: -30.7 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:58,753 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 369.99 ms. Allocated memory is still 146.8 MB. Free memory was 102.8 MB in the beginning and 91.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 140.62 ms. Allocated memory was 146.8 MB in the beginning and 201.9 MB in the end (delta: 55.1 MB). Free memory was 91.9 MB in the beginning and 179.0 MB in the end (delta: -87.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 450.80 ms. Allocated memory is still 201.9 MB. Free memory was 179.0 MB in the beginning and 158.7 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1640.67 ms. Allocated memory was 201.9 MB in the beginning and 234.9 MB in the end (delta: 33.0 MB). Free memory was 158.0 MB in the beginning and 188.8 MB in the end (delta: -30.7 MB). Peak memory consumption was 2.3 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)=7, 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] long long *a = malloc(sizeof(long long)*N); [L29] sum[0] = 0 [L30] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(long long)*N)={-1:0}, N=1, sum={2:0}] [L30] COND TRUE i