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/ldv-regression/test10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:08:33,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:08:33,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:08:33,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:08:33,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:08:33,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:08:33,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:08:33,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:08:33,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:08:33,127 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:08:33,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:08:33,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:08:33,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:08:33,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:08:33,131 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:08:33,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:08:33,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:08:33,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:08:33,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:08:33,138 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:08:33,139 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:08:33,140 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:08:33,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:08:33,142 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:08:33,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:08:33,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:08:33,149 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:08:33,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:08:33,151 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:08:33,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:08:33,152 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:08:33,153 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:08:33,153 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:08:33,153 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:08:33,154 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:08:33,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:08:33,156 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 [2019-10-14 23:08:33,176 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:08:33,179 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:08:33,180 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:08:33,180 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:08:33,181 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:08:33,181 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:08:33,181 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:08:33,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:08:33,181 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:08:33,182 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:08:33,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:08:33,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:08:33,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:08:33,182 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:08:33,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:08:33,183 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:08:33,183 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:08:33,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:08:33,183 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:08:33,184 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:08:33,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:08:33,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:08:33,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:08:33,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:08:33,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:08:33,185 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:08:33,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:08:33,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:08:33,185 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:08:33,457 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:08:33,474 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:08:33,478 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:08:33,479 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:08:33,479 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:08:33,480 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test10.c [2019-10-14 23:08:33,554 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/023f0af06/a3bdddcc7cd64b16967097a258648496/FLAG1f7b2513e [2019-10-14 23:08:34,005 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:08:34,007 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test10.c [2019-10-14 23:08:34,014 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/023f0af06/a3bdddcc7cd64b16967097a258648496/FLAG1f7b2513e [2019-10-14 23:08:34,370 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/023f0af06/a3bdddcc7cd64b16967097a258648496 [2019-10-14 23:08:34,379 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:08:34,381 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:08:34,382 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:08:34,382 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:08:34,385 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:08:34,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:08:34" (1/1) ... [2019-10-14 23:08:34,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d066b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:34, skipping insertion in model container [2019-10-14 23:08:34,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:08:34" (1/1) ... [2019-10-14 23:08:34,394 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:08:34,411 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:08:34,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:08:34,573 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:08:34,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:08:34,609 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:08:34,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:34 WrapperNode [2019-10-14 23:08:34,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:08:34,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:08:34,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:08:34,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:08:34,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:34" (1/1) ... [2019-10-14 23:08:34,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:34" (1/1) ... [2019-10-14 23:08:34,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:34" (1/1) ... [2019-10-14 23:08:34,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:34" (1/1) ... [2019-10-14 23:08:34,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:34" (1/1) ... [2019-10-14 23:08:34,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:34" (1/1) ... [2019-10-14 23:08:34,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:34" (1/1) ... [2019-10-14 23:08:34,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:08:34,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:08:34,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:08:34,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:08:34,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:34" (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 [2019-10-14 23:08:34,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:08:34,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:08:34,792 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-10-14 23:08:34,792 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:08:34,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:08:34,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:08:34,793 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-10-14 23:08:34,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:08:34,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:08:34,793 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:08:34,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:08:34,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:08:34,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:08:34,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:08:34,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:08:34,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-14 23:08:34,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:08:34,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:08:35,150 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:08:35,150 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-14 23:08:35,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:08:35 BoogieIcfgContainer [2019-10-14 23:08:35,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:08:35,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:08:35,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:08:35,156 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:08:35,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:08:34" (1/3) ... [2019-10-14 23:08:35,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28f662f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:08:35, skipping insertion in model container [2019-10-14 23:08:35,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:34" (2/3) ... [2019-10-14 23:08:35,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28f662f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:08:35, skipping insertion in model container [2019-10-14 23:08:35,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:08:35" (3/3) ... [2019-10-14 23:08:35,159 INFO L109 eAbstractionObserver]: Analyzing ICFG test10.c [2019-10-14 23:08:35,168 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:08:35,174 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:08:35,183 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:08:35,209 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:08:35,209 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:08:35,209 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:08:35,209 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:08:35,209 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:08:35,210 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:08:35,210 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:08:35,210 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:08:35,225 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-10-14 23:08:35,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-14 23:08:35,230 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:35,231 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:08:35,233 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:35,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:35,239 INFO L82 PathProgramCache]: Analyzing trace with hash -320886355, now seen corresponding path program 1 times [2019-10-14 23:08:35,247 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:35,248 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151457371] [2019-10-14 23:08:35,248 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:35,248 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:35,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:35,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:36,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:36,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:08:36,075 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151457371] [2019-10-14 23:08:36,076 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:08:36,076 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:08:36,076 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138164171] [2019-10-14 23:08:36,081 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:08:36,081 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:36,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:08:36,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:08:36,098 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 9 states. [2019-10-14 23:08:36,604 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2019-10-14 23:08:36,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:08:36,915 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2019-10-14 23:08:36,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 23:08:36,917 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2019-10-14 23:08:36,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:08:36,929 INFO L225 Difference]: With dead ends: 26 [2019-10-14 23:08:36,930 INFO L226 Difference]: Without dead ends: 15 [2019-10-14 23:08:36,939 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2019-10-14 23:08:36,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-10-14 23:08:36,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-10-14 23:08:36,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-14 23:08:36,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2019-10-14 23:08:36,993 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 14 [2019-10-14 23:08:36,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:08:36,994 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2019-10-14 23:08:36,994 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:08:36,994 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2019-10-14 23:08:36,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-14 23:08:36,996 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:36,996 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:08:36,997 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:36,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:36,998 INFO L82 PathProgramCache]: Analyzing trace with hash -320884433, now seen corresponding path program 1 times [2019-10-14 23:08:36,998 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:36,999 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459076222] [2019-10-14 23:08:36,999 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:36,999 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:36,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:37,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:37,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:08:37,418 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459076222] [2019-10-14 23:08:37,418 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:08:37,419 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:08:37,419 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105367507] [2019-10-14 23:08:37,420 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:08:37,421 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:37,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:08:37,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:08:37,422 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand 10 states. [2019-10-14 23:08:37,845 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2019-10-14 23:08:38,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:08:38,162 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2019-10-14 23:08:38,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 23:08:38,162 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2019-10-14 23:08:38,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:08:38,163 INFO L225 Difference]: With dead ends: 15 [2019-10-14 23:08:38,164 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:08:38,165 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2019-10-14 23:08:38,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:08:38,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:08:38,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:08:38,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:08:38,166 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-10-14 23:08:38,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:08:38,166 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:08:38,166 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:08:38,166 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:08:38,167 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:08:38,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:08:38,484 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:08:38,484 INFO L439 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |~#a~0.base| |old(~#a~0.base)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= |~#p1~0.offset| |old(~#p1~0.offset)|) (= ~pp2~0.offset |old(~pp2~0.offset)|) (= |~#p2~0.base| |old(~#p2~0.base)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= ~pp1~0.offset |old(~pp1~0.offset)|) (= ~pp1~0.base |old(~pp1~0.base)|) (= |~#p2~0.offset| |old(~#p2~0.offset)|) (= ~pp2~0.base |old(~pp2~0.base)|) (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#p1~0.base| |old(~#p1~0.base)|) (= |old(#length)| |#length|)) [2019-10-14 23:08:38,485 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:08:38,485 INFO L443 ceAbstractionStarter]: For program point fEXIT(lines 9 14) no Hoare annotation was computed. [2019-10-14 23:08:38,485 INFO L439 ceAbstractionStarter]: At program point fENTRY(lines 9 14) the Hoare annotation is: (or (not (= ~pp1~0.base |~#p1~0.base|)) (not (= (select (select |old(#memory_$Pointer$.base)| |old(~pp2~0.base)|) |old(~pp2~0.offset)|) |~#b~0.base|)) (= |~#a~0.base| |~#b~0.base|) (= |~#p2~0.base| |~#b~0.base|) (and (= ~pp2~0.base |old(~pp2~0.base)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= ~pp2~0.offset |old(~pp2~0.offset)|) (= |#memory_int| |old(#memory_int)|)) (= |~#a~0.base| |~#p1~0.base|) (= |~#p2~0.base| |~#a~0.base|) (not (= ~pp1~0.offset |~#p1~0.offset|)) (not (= (select (select |old(#memory_$Pointer$.offset)| |old(~pp2~0.base)|) |old(~pp2~0.offset)|) |~#b~0.offset|)) (= |~#p1~0.base| |~#b~0.base|)) [2019-10-14 23:08:38,485 INFO L443 ceAbstractionStarter]: For program point fFINAL(lines 9 14) no Hoare annotation was computed. [2019-10-14 23:08:38,485 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:08:38,486 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (not (= |~#b~0.base| |~#p1~0.base|)) (not (= |~#p2~0.base| |~#a~0.base|)) (not (= |~#b~0.base| |~#p2~0.base|)) (not (= |~#b~0.base| |~#a~0.base|)) (not (= |~#p1~0.base| |~#a~0.base|))) [2019-10-14 23:08:38,486 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:08:38,486 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:08:38,486 INFO L439 ceAbstractionStarter]: At program point L31(line 31) the Hoare annotation is: (or (and (= |~#b~0.base| (select (select |#memory_$Pointer$.base| ~pp2~0.base) ~pp2~0.offset)) (= |~#p1~0.base| ~pp1~0.base) (= |~#p1~0.offset| ~pp1~0.offset) (= (select (select |#memory_$Pointer$.offset| ~pp2~0.base) ~pp2~0.offset) |~#b~0.offset|)) (= |~#a~0.base| |~#b~0.base|) (= |~#p2~0.base| |~#b~0.base|) (= |~#a~0.base| |~#p1~0.base|) (= |~#p2~0.base| |~#a~0.base|) (= |~#p1~0.base| |~#b~0.base|)) [2019-10-14 23:08:38,486 INFO L443 ceAbstractionStarter]: For program point L31-1(line 31) no Hoare annotation was computed. [2019-10-14 23:08:38,487 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 16 49) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (= |~#p2~0.base| |~#b~0.base|) (= |~#a~0.base| |~#p1~0.base|) (= |~#p2~0.base| |~#a~0.base|) (and (= ~pp2~0.offset |old(~pp2~0.offset)|) (= ~pp1~0.offset |old(~pp1~0.offset)|) (= ~pp1~0.base |old(~pp1~0.base)|) (= ~pp2~0.base |old(~pp2~0.base)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (= |~#p1~0.base| |~#b~0.base|)) [2019-10-14 23:08:38,487 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 47) no Hoare annotation was computed. [2019-10-14 23:08:38,487 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 16 49) no Hoare annotation was computed. [2019-10-14 23:08:38,487 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 16 49) no Hoare annotation was computed. [2019-10-14 23:08:38,487 INFO L439 ceAbstractionStarter]: At program point L42(lines 16 49) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (= |~#p2~0.base| |~#b~0.base|) (= |~#a~0.base| |~#p1~0.base|) (= |~#p2~0.base| |~#a~0.base|) (= |~#p1~0.base| |~#b~0.base|)) [2019-10-14 23:08:38,488 INFO L443 ceAbstractionStarter]: For program point L41(line 41) no Hoare annotation was computed. [2019-10-14 23:08:38,488 INFO L443 ceAbstractionStarter]: For program point L41-2(lines 41 43) no Hoare annotation was computed. [2019-10-14 23:08:38,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:08:38 BoogieIcfgContainer [2019-10-14 23:08:38,502 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:08:38,504 INFO L168 Benchmark]: Toolchain (without parser) took 4123.07 ms. Allocated memory was 145.8 MB in the beginning and 246.4 MB in the end (delta: 100.7 MB). Free memory was 104.6 MB in the beginning and 144.0 MB in the end (delta: -39.4 MB). Peak memory consumption was 61.3 MB. Max. memory is 7.1 GB. [2019-10-14 23:08:38,505 INFO L168 Benchmark]: CDTParser took 0.77 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-14 23:08:38,506 INFO L168 Benchmark]: CACSL2BoogieTranslator took 228.50 ms. Allocated memory is still 145.8 MB. Free memory was 104.2 MB in the beginning and 94.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-10-14 23:08:38,507 INFO L168 Benchmark]: Boogie Preprocessor took 120.19 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 94.2 MB in the beginning and 181.7 MB in the end (delta: -87.4 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2019-10-14 23:08:38,508 INFO L168 Benchmark]: RCFGBuilder took 420.83 ms. Allocated memory is still 203.4 MB. Free memory was 181.7 MB in the beginning and 161.7 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2019-10-14 23:08:38,509 INFO L168 Benchmark]: TraceAbstraction took 3349.44 ms. Allocated memory was 203.4 MB in the beginning and 246.4 MB in the end (delta: 43.0 MB). Free memory was 161.0 MB in the beginning and 144.0 MB in the end (delta: 17.0 MB). Peak memory consumption was 60.0 MB. Max. memory is 7.1 GB. [2019-10-14 23:08:38,513 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.77 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 228.50 ms. Allocated memory is still 145.8 MB. Free memory was 104.2 MB in the beginning and 94.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.19 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 94.2 MB in the beginning and 181.7 MB in the end (delta: -87.4 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 420.83 ms. Allocated memory is still 203.4 MB. Free memory was 181.7 MB in the beginning and 161.7 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3349.44 ms. Allocated memory was 203.4 MB in the beginning and 246.4 MB in the end (delta: 43.0 MB). Free memory was 161.0 MB in the beginning and 144.0 MB in the end (delta: 17.0 MB). Peak memory consumption was 60.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 47]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: (((a == b || p2 == b) || a == p1) || p2 == a) || p1 == b - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Result: SAFE, OverallTime: 3.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, HoareTripleCheckerStatistics: 18 SDtfs, 20 SDslu, 56 SDs, 0 SdLazy, 102 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 218 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 167 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 6890 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...