/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:30:08,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:30:08,975 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:30:09,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:30:09,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:30:09,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:30:09,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:30:09,027 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:30:09,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:30:09,031 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:30:09,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:30:09,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:30:09,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:30:09,045 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:30:09,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:30:09,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:30:09,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:30:09,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:30:09,062 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:30:09,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:30:09,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:30:09,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:30:09,081 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:30:09,082 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:30:09,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 11:30:09,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:30:09,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:30:09,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:30:09,113 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 [2020-07-20 11:30:09,141 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:30:09,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:30:09,145 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:30:09,146 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:30:09,146 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:30:09,146 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:30:09,146 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:30:09,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:30:09,147 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:30:09,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:30:09,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:30:09,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:30:09,150 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:30:09,150 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:30:09,151 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:30:09,151 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:30:09,151 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:30:09,151 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:30:09,152 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:30:09,152 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:30:09,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:30:09,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:30:09,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:30:09,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:30:09,153 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:30:09,153 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:30:09,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:30:09,154 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:30:09,154 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:30:09,155 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 11:30:09,519 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:30:09,540 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:30:09,546 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:30:09,548 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:30:09,549 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:30:09,550 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test13.c [2020-07-20 11:30:09,663 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed88b73d9/032f94298c9c49c89792504b0acff2df/FLAG3d2da3c9c [2020-07-20 11:30:10,256 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:30:10,257 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test13.c [2020-07-20 11:30:10,268 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed88b73d9/032f94298c9c49c89792504b0acff2df/FLAG3d2da3c9c [2020-07-20 11:30:10,559 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed88b73d9/032f94298c9c49c89792504b0acff2df [2020-07-20 11:30:10,572 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:30:10,576 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:30:10,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:30:10,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:30:10,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:30:10,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:30:10" (1/1) ... [2020-07-20 11:30:10,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39e3fce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:10, skipping insertion in model container [2020-07-20 11:30:10,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:30:10" (1/1) ... [2020-07-20 11:30:10,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:30:10,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:30:10,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:30:10,805 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:30:10,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:30:10,848 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:30:10,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:10 WrapperNode [2020-07-20 11:30:10,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:30:10,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:30:10,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:30:10,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:30:10,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:10" (1/1) ... [2020-07-20 11:30:10,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:10" (1/1) ... [2020-07-20 11:30:10,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:10" (1/1) ... [2020-07-20 11:30:10,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:10" (1/1) ... [2020-07-20 11:30:10,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:10" (1/1) ... [2020-07-20 11:30:10,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:10" (1/1) ... [2020-07-20 11:30:10,986 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:10" (1/1) ... [2020-07-20 11:30:10,988 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:30:10,989 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:30:10,989 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:30:10,990 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:30:10,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:10" (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 [2020-07-20 11:30:11,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:30:11,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:30:11,075 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-07-20 11:30:11,075 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:30:11,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:30:11,075 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-20 11:30:11,075 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:30:11,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:30:11,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 11:30:11,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 11:30:11,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:30:11,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 11:30:11,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 11:30:11,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 11:30:11,341 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:30:11,342 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 11:30:11,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:30:11 BoogieIcfgContainer [2020-07-20 11:30:11,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:30:11,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:30:11,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:30:11,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:30:11,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:30:10" (1/3) ... [2020-07-20 11:30:11,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d80ec0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:30:11, skipping insertion in model container [2020-07-20 11:30:11,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:10" (2/3) ... [2020-07-20 11:30:11,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d80ec0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:30:11, skipping insertion in model container [2020-07-20 11:30:11,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:30:11" (3/3) ... [2020-07-20 11:30:11,397 INFO L109 eAbstractionObserver]: Analyzing ICFG test13.c [2020-07-20 11:30:11,432 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:30:11,445 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:30:11,471 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:30:11,510 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:30:11,511 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:30:11,511 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:30:11,511 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:30:11,511 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:30:11,511 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:30:11,512 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:30:11,512 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:30:11,570 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-07-20 11:30:11,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-07-20 11:30:11,581 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:30:11,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:30:11,587 INFO L427 AbstractCegarLoop]: === Iteration 1 === [checkErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:30:11,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:30:11,600 INFO L82 PathProgramCache]: Analyzing trace with hash 562540648, now seen corresponding path program 1 times [2020-07-20 11:30:11,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:30:11,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233386932] [2020-07-20 11:30:11,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:30:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:30:11,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-20 11:30:11,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:30:11,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:30:11,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:30:11,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233386932] [2020-07-20 11:30:11,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:30:11,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:30:11,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359021021] [2020-07-20 11:30:11,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:30:11,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:30:11,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:30:11,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:30:11,898 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 5 states. [2020-07-20 11:30:12,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:30:12,009 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2020-07-20 11:30:12,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:30:12,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-07-20 11:30:12,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:30:12,023 INFO L225 Difference]: With dead ends: 24 [2020-07-20 11:30:12,023 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 11:30:12,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:30:12,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 11:30:12,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 11:30:12,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 11:30:12,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 11:30:12,069 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-07-20 11:30:12,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:30:12,070 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 11:30:12,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:30:12,071 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 11:30:12,071 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 11:30:12,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:30:12,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 11:30:12,419 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:30:12,420 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 11:30:12,420 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:30:12,420 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:30:12,421 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|)) [2020-07-20 11:30:12,421 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 11:30:12,421 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:30:12,422 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 17 20) the Hoare annotation is: true [2020-07-20 11:30:12,422 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 17 20) no Hoare annotation was computed. [2020-07-20 11:30:12,422 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 17 20) no Hoare annotation was computed. [2020-07-20 11:30:12,422 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-07-20 11:30:12,423 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 4 12) the Hoare annotation is: true [2020-07-20 11:30:12,423 INFO L268 CegarLoopResult]: For program point checkErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2020-07-20 11:30:12,423 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 4 12) no Hoare annotation was computed. [2020-07-20 11:30:12,424 INFO L264 CegarLoopResult]: At program point L6(lines 4 12) the Hoare annotation is: (or (not (= |~#a~0.base| ~pa~0.base)) (not (= |check_#in~b.offset| |check_#in~a.offset|)) (not (= |~#a~0.offset| ~pa~0.offset)) (not (= |check_#in~a.base| |check_#in~b.base|))) [2020-07-20 11:30:12,424 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-07-20 11:30:12,424 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 4 12) no Hoare annotation was computed. [2020-07-20 11:30:12,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:30:12 BoogieIcfgContainer [2020-07-20 11:30:12,451 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:30:12,455 INFO L168 Benchmark]: Toolchain (without parser) took 1879.38 ms. Allocated memory was 136.8 MB in the beginning and 202.9 MB in the end (delta: 66.1 MB). Free memory was 100.6 MB in the beginning and 127.8 MB in the end (delta: -27.3 MB). Peak memory consumption was 38.8 MB. Max. memory is 7.1 GB. [2020-07-20 11:30:12,457 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 136.8 MB. Free memory was 118.6 MB in the beginning and 118.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 11:30:12,459 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.26 ms. Allocated memory is still 136.8 MB. Free memory was 100.1 MB in the beginning and 90.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-20 11:30:12,460 INFO L168 Benchmark]: Boogie Preprocessor took 138.78 ms. Allocated memory was 136.8 MB in the beginning and 202.9 MB in the end (delta: 66.1 MB). Free memory was 90.6 MB in the beginning and 181.1 MB in the end (delta: -90.4 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-07-20 11:30:12,462 INFO L168 Benchmark]: RCFGBuilder took 371.89 ms. Allocated memory is still 202.9 MB. Free memory was 181.1 MB in the beginning and 167.7 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-07-20 11:30:12,463 INFO L168 Benchmark]: TraceAbstraction took 1088.11 ms. Allocated memory is still 202.9 MB. Free memory was 167.7 MB in the beginning and 127.8 MB in the end (delta: 39.9 MB). Peak memory consumption was 39.9 MB. Max. memory is 7.1 GB. [2020-07-20 11:30:12,467 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 136.8 MB. Free memory was 118.6 MB in the beginning and 118.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 272.26 ms. Allocated memory is still 136.8 MB. Free memory was 100.1 MB in the beginning and 90.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 138.78 ms. Allocated memory was 136.8 MB in the beginning and 202.9 MB in the end (delta: 66.1 MB). Free memory was 90.6 MB in the beginning and 181.1 MB in the end (delta: -90.4 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 371.89 ms. Allocated memory is still 202.9 MB. Free memory was 181.1 MB in the beginning and 167.7 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1088.11 ms. Allocated memory is still 202.9 MB. Free memory was 167.7 MB in the beginning and 127.8 MB in the end (delta: 39.9 MB). Peak memory consumption was 39.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: 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: 4]: Loop Invariant Derived loop invariant: ((!(a == pa) || !(b == a)) || !(a == pa)) || !(a == b) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 13 SDslu, 20 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 6 NumberOfFragments, 28 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 44 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 352 SizeOfPredicates, 12 NumberOfNonLiveVariables, 103 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...