/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 --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test_cut_trace.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 05:47:07,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 05:47:07,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 05:47:07,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 05:47:07,862 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 05:47:07,863 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 05:47:07,865 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 05:47:07,877 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 05:47:07,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 05:47:07,882 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 05:47:07,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 05:47:07,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 05:47:07,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 05:47:07,889 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 05:47:07,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 05:47:07,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 05:47:07,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 05:47:07,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 05:47:07,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 05:47:07,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 05:47:07,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 05:47:07,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 05:47:07,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 05:47:07,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 05:47:07,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 05:47:07,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 05:47:07,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 05:47:07,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 05:47:07,931 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 05:47:07,966 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 05:47:07,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 05:47:07,967 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 05:47:07,967 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 05:47:07,968 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 05:47:07,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 05:47:07,968 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 05:47:07,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 05:47:07,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 05:47:07,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 05:47:07,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 05:47:07,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 05:47:07,975 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 05:47:07,975 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 05:47:07,975 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 05:47:07,975 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 05:47:07,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 05:47:07,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 05:47:07,976 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 05:47:07,976 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 05:47:07,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 05:47:07,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 05:47:07,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 05:47:07,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 05:47:07,979 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 05:47:07,979 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 05:47:07,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 05:47:07,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 05:47:07,980 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 05:47:07,980 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 05:47:08,272 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 05:47:08,286 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 05:47:08,290 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 05:47:08,291 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 05:47:08,291 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 05:47:08,292 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_cut_trace.i [2020-07-20 05:47:08,355 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91533f0f6/4c797446e43b43089e9a70e85b04cef6/FLAG32382b074 [2020-07-20 05:47:08,814 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 05:47:08,815 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_cut_trace.i [2020-07-20 05:47:08,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91533f0f6/4c797446e43b43089e9a70e85b04cef6/FLAG32382b074 [2020-07-20 05:47:09,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91533f0f6/4c797446e43b43089e9a70e85b04cef6 [2020-07-20 05:47:09,228 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 05:47:09,231 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 05:47:09,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 05:47:09,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 05:47:09,236 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 05:47:09,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:47:09" (1/1) ... [2020-07-20 05:47:09,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39b899ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:47:09, skipping insertion in model container [2020-07-20 05:47:09,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:47:09" (1/1) ... [2020-07-20 05:47:09,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 05:47:09,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 05:47:09,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 05:47:09,440 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 05:47:09,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 05:47:09,466 INFO L208 MainTranslator]: Completed translation [2020-07-20 05:47:09,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:47:09 WrapperNode [2020-07-20 05:47:09,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 05:47:09,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 05:47:09,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 05:47:09,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 05:47:09,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:47:09" (1/1) ... [2020-07-20 05:47:09,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:47:09" (1/1) ... [2020-07-20 05:47:09,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:47:09" (1/1) ... [2020-07-20 05:47:09,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:47:09" (1/1) ... [2020-07-20 05:47:09,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:47:09" (1/1) ... [2020-07-20 05:47:09,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:47:09" (1/1) ... [2020-07-20 05:47:09,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:47:09" (1/1) ... [2020-07-20 05:47:09,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 05:47:09,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 05:47:09,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 05:47:09,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 05:47:09,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:47:09" (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 05:47:09,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 05:47:09,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 05:47:09,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-20 05:47:09,639 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 05:47:09,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 05:47:09,641 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-20 05:47:09,641 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 05:47:09,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 05:47:09,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 05:47:09,772 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 05:47:09,772 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 05:47:09,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:47:09 BoogieIcfgContainer [2020-07-20 05:47:09,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 05:47:09,778 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 05:47:09,778 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 05:47:09,781 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 05:47:09,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 05:47:09" (1/3) ... [2020-07-20 05:47:09,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ffc7eab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:47:09, skipping insertion in model container [2020-07-20 05:47:09,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:47:09" (2/3) ... [2020-07-20 05:47:09,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ffc7eab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:47:09, skipping insertion in model container [2020-07-20 05:47:09,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:47:09" (3/3) ... [2020-07-20 05:47:09,786 INFO L109 eAbstractionObserver]: Analyzing ICFG test_cut_trace.i [2020-07-20 05:47:09,797 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 05:47:09,805 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 05:47:09,821 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 05:47:09,847 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 05:47:09,847 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 05:47:09,847 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 05:47:09,848 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 05:47:09,848 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 05:47:09,848 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 05:47:09,848 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 05:47:09,848 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 05:47:09,868 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-07-20 05:47:09,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-20 05:47:09,873 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:47:09,874 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:47:09,874 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:47:09,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:47:09,880 INFO L82 PathProgramCache]: Analyzing trace with hash -417355086, now seen corresponding path program 1 times [2020-07-20 05:47:09,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:47:09,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234913121] [2020-07-20 05:47:09,889 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6c7fd8de [2020-07-20 05:47:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:47:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:47:10,023 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 05:47:10,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234913121] [2020-07-20 05:47:10,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:47:10,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:47:10,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491141088] [2020-07-20 05:47:10,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:47:10,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:47:10,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:47:10,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:47:10,049 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2020-07-20 05:47:10,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:47:10,111 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-07-20 05:47:10,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:47:10,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-07-20 05:47:10,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:47:10,133 INFO L225 Difference]: With dead ends: 29 [2020-07-20 05:47:10,133 INFO L226 Difference]: Without dead ends: 11 [2020-07-20 05:47:10,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:47:10,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-07-20 05:47:10,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-07-20 05:47:10,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-07-20 05:47:10,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2020-07-20 05:47:10,217 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 8 [2020-07-20 05:47:10,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:47:10,220 INFO L479 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2020-07-20 05:47:10,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:47:10,221 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-07-20 05:47:10,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-20 05:47:10,222 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:47:10,222 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:47:10,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 05:47:10,226 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:47:10,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:47:10,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1648524013, now seen corresponding path program 1 times [2020-07-20 05:47:10,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:47:10,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465456372] [2020-07-20 05:47:10,228 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6c7fd8de [2020-07-20 05:47:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:47:10,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:47:10,353 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 05:47:10,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465456372] [2020-07-20 05:47:10,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:47:10,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 05:47:10,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690268250] [2020-07-20 05:47:10,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 05:47:10,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:47:10,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 05:47:10,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 05:47:10,358 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand 4 states. [2020-07-20 05:47:10,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:47:10,395 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-07-20 05:47:10,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 05:47:10,395 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-07-20 05:47:10,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:47:10,396 INFO L225 Difference]: With dead ends: 11 [2020-07-20 05:47:10,396 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 05:47:10,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 05:47:10,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 05:47:10,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 05:47:10,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 05:47:10,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 05:47:10,399 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-07-20 05:47:10,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:47:10,400 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 05:47:10,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 05:47:10,400 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 05:47:10,401 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 05:47:10,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 05:47:10,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 05:47:10,440 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 05:47:10,440 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 05:47:10,440 INFO L268 CegarLoopResult]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-07-20 05:47:10,441 INFO L268 CegarLoopResult]: For program point __blast_assertEXIT(lines 4 7) no Hoare annotation was computed. [2020-07-20 05:47:10,441 INFO L268 CegarLoopResult]: For program point __blast_assertFINAL(lines 4 7) no Hoare annotation was computed. [2020-07-20 05:47:10,441 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true [2020-07-20 05:47:10,441 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 05:47:10,442 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 05:47:10,442 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 05:47:10,442 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 05:47:10,442 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 20) the Hoare annotation is: true [2020-07-20 05:47:10,443 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 20) no Hoare annotation was computed. [2020-07-20 05:47:10,443 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-07-20 05:47:10,443 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-07-20 05:47:10,443 INFO L264 CegarLoopResult]: At program point L18-2(line 18) the Hoare annotation is: false [2020-07-20 05:47:10,444 INFO L268 CegarLoopResult]: For program point L18-3(line 18) no Hoare annotation was computed. [2020-07-20 05:47:10,444 INFO L264 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: false [2020-07-20 05:47:10,444 INFO L268 CegarLoopResult]: For program point L16-3(line 16) no Hoare annotation was computed. [2020-07-20 05:47:10,444 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 20) no Hoare annotation was computed. [2020-07-20 05:47:10,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 05:47:10 BoogieIcfgContainer [2020-07-20 05:47:10,452 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 05:47:10,455 INFO L168 Benchmark]: Toolchain (without parser) took 1223.89 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 102.9 MB in the beginning and 138.3 MB in the end (delta: -35.4 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2020-07-20 05:47:10,456 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 137.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 05:47:10,457 INFO L168 Benchmark]: CACSL2BoogieTranslator took 234.84 ms. Allocated memory is still 137.9 MB. Free memory was 102.5 MB in the beginning and 93.5 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. [2020-07-20 05:47:10,458 INFO L168 Benchmark]: Boogie Preprocessor took 23.57 ms. Allocated memory is still 137.9 MB. Free memory was 93.5 MB in the beginning and 92.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-20 05:47:10,460 INFO L168 Benchmark]: RCFGBuilder took 285.43 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 92.1 MB in the beginning and 171.7 MB in the end (delta: -79.6 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-07-20 05:47:10,461 INFO L168 Benchmark]: TraceAbstraction took 674.08 ms. Allocated memory is still 201.9 MB. Free memory was 171.0 MB in the beginning and 138.3 MB in the end (delta: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 7.1 GB. [2020-07-20 05:47:10,465 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 137.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 234.84 ms. Allocated memory is still 137.9 MB. Free memory was 102.5 MB in the beginning and 93.5 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.57 ms. Allocated memory is still 137.9 MB. Free memory was 93.5 MB in the beginning and 92.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 285.43 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 92.1 MB in the beginning and 171.7 MB in the end (delta: -79.6 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 674.08 ms. Allocated memory is still 201.9 MB. Free memory was 171.0 MB in the beginning and 138.3 MB in the end (delta: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 7 SDslu, 16 SDs, 0 SdLazy, 6 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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, 9 PreInvPairs, 9 NumberOfFragments, 7 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 306 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...