/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 NUM_FUNCTIONS --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/loop-lit/ddlm2013.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 23:43:39,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 23:43:39,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 23:43:39,134 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 23:43:39,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 23:43:39,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 23:43:39,137 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 23:43:39,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 23:43:39,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 23:43:39,141 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 23:43:39,142 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 23:43:39,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 23:43:39,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 23:43:39,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 23:43:39,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 23:43:39,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 23:43:39,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 23:43:39,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 23:43:39,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 23:43:39,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 23:43:39,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 23:43:39,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 23:43:39,156 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 23:43:39,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 23:43:39,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-19 23:43:39,160 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-19 23:43:39,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-19 23:43:39,161 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-19 23:43:39,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-19 23:43:39,162 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-19 23:43:39,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-19 23:43:39,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-19 23:43:39,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-19 23:43:39,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-19 23:43:39,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-19 23:43:39,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-19 23:43:39,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-19 23:43:39,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-19 23:43:39,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 23:43:39,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 23:43:39,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 23:43:39,169 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 [2020-07-19 23:43:39,183 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 23:43:39,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 23:43:39,185 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 23:43:39,185 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 23:43:39,185 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 23:43:39,185 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 23:43:39,186 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 23:43:39,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 23:43:39,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 23:43:39,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 23:43:39,186 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 23:43:39,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 23:43:39,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 23:43:39,187 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 23:43:39,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 23:43:39,187 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 23:43:39,188 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 23:43:39,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 23:43:39,188 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 23:43:39,188 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 23:43:39,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 23:43:39,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 23:43:39,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 23:43:39,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 23:43:39,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 23:43:39,189 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 23:43:39,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 23:43:39,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 23:43:39,190 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 23:43:39,190 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS 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 [2020-07-19 23:43:39,492 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 23:43:39,505 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 23:43:39,509 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 23:43:39,510 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 23:43:39,511 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 23:43:39,511 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/ddlm2013.i [2020-07-19 23:43:39,589 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3951044ce/790aceb64e6b4155bee593b09cdcefe6/FLAGd2b64a868 [2020-07-19 23:43:40,065 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 23:43:40,066 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/ddlm2013.i [2020-07-19 23:43:40,073 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3951044ce/790aceb64e6b4155bee593b09cdcefe6/FLAGd2b64a868 [2020-07-19 23:43:40,406 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3951044ce/790aceb64e6b4155bee593b09cdcefe6 [2020-07-19 23:43:40,414 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 23:43:40,417 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 23:43:40,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 23:43:40,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 23:43:40,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 23:43:40,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:43:40" (1/1) ... [2020-07-19 23:43:40,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a01065e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:43:40, skipping insertion in model container [2020-07-19 23:43:40,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:43:40" (1/1) ... [2020-07-19 23:43:40,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 23:43:40,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 23:43:40,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:43:40,615 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 23:43:40,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:43:40,648 INFO L208 MainTranslator]: Completed translation [2020-07-19 23:43:40,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:43:40 WrapperNode [2020-07-19 23:43:40,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 23:43:40,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 23:43:40,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 23:43:40,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 23:43:40,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:43:40" (1/1) ... [2020-07-19 23:43:40,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:43:40" (1/1) ... [2020-07-19 23:43:40,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:43:40" (1/1) ... [2020-07-19 23:43:40,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:43:40" (1/1) ... [2020-07-19 23:43:40,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:43:40" (1/1) ... [2020-07-19 23:43:40,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:43:40" (1/1) ... [2020-07-19 23:43:40,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:43:40" (1/1) ... [2020-07-19 23:43:40,758 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 23:43:40,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 23:43:40,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 23:43:40,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 23:43:40,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:43:40" (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 [2020-07-19 23:43:40,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 23:43:40,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 23:43:40,828 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-19 23:43:40,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-19 23:43:40,828 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 23:43:40,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 23:43:40,829 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-19 23:43:40,829 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-19 23:43:40,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-19 23:43:40,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 23:43:40,829 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 23:43:40,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 23:43:40,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 23:43:41,048 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 23:43:41,048 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-19 23:43:41,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:43:41 BoogieIcfgContainer [2020-07-19 23:43:41,053 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 23:43:41,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 23:43:41,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 23:43:41,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 23:43:41,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:43:40" (1/3) ... [2020-07-19 23:43:41,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e46fecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:43:41, skipping insertion in model container [2020-07-19 23:43:41,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:43:40" (2/3) ... [2020-07-19 23:43:41,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e46fecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:43:41, skipping insertion in model container [2020-07-19 23:43:41,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:43:41" (3/3) ... [2020-07-19 23:43:41,060 INFO L109 eAbstractionObserver]: Analyzing ICFG ddlm2013.i [2020-07-19 23:43:41,072 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 23:43:41,079 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 23:43:41,096 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 23:43:41,159 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 23:43:41,160 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 23:43:41,160 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 23:43:41,160 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 23:43:41,160 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 23:43:41,160 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 23:43:41,161 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 23:43:41,161 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 23:43:41,205 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-07-19 23:43:41,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-19 23:43:41,210 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:43:41,211 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:43:41,211 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:43:41,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:43:41,216 INFO L82 PathProgramCache]: Analyzing trace with hash -917653371, now seen corresponding path program 1 times [2020-07-19 23:43:41,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:43:41,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587236467] [2020-07-19 23:43:41,224 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7d48bacf [2020-07-19 23:43:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:43:41,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:43:41,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:43:41,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587236467] [2020-07-19 23:43:41,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:43:41,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-19 23:43:41,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309037268] [2020-07-19 23:43:41,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-19 23:43:41,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:43:41,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-19 23:43:41,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-19 23:43:41,356 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-07-19 23:43:41,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:43:41,380 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2020-07-19 23:43:41,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-19 23:43:41,382 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-19 23:43:41,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:43:41,391 INFO L225 Difference]: With dead ends: 35 [2020-07-19 23:43:41,392 INFO L226 Difference]: Without dead ends: 15 [2020-07-19 23:43:41,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-19 23:43:41,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-19 23:43:41,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-19 23:43:41,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-19 23:43:41,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-07-19 23:43:41,435 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 12 [2020-07-19 23:43:41,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:43:41,436 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-07-19 23:43:41,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-19 23:43:41,436 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-07-19 23:43:41,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-19 23:43:41,437 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:43:41,437 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:43:41,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 23:43:41,437 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:43:41,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:43:41,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1750778295, now seen corresponding path program 1 times [2020-07-19 23:43:41,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:43:41,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178025247] [2020-07-19 23:43:41,439 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7d48bacf [2020-07-19 23:43:41,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:43:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:43:41,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:43:41,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178025247] [2020-07-19 23:43:41,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:43:41,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 23:43:41,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814354000] [2020-07-19 23:43:41,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 23:43:41,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:43:41,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 23:43:41,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 23:43:41,494 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2020-07-19 23:43:41,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:43:41,518 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2020-07-19 23:43:41,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 23:43:41,519 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-07-19 23:43:41,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:43:41,520 INFO L225 Difference]: With dead ends: 24 [2020-07-19 23:43:41,520 INFO L226 Difference]: Without dead ends: 15 [2020-07-19 23:43:41,521 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 [2020-07-19 23:43:41,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-19 23:43:41,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-19 23:43:41,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-19 23:43:41,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-07-19 23:43:41,526 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2020-07-19 23:43:41,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:43:41,527 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-07-19 23:43:41,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 23:43:41,527 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-07-19 23:43:41,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-19 23:43:41,528 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:43:41,528 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:43:41,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 23:43:41,529 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:43:41,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:43:41,530 INFO L82 PathProgramCache]: Analyzing trace with hash -941431669, now seen corresponding path program 1 times [2020-07-19 23:43:41,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:43:41,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554307554] [2020-07-19 23:43:41,531 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7d48bacf [2020-07-19 23:43:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:43:41,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-19 23:43:41,609 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Asserted terms must be closed at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.assertTerm(SMTInterpol.java:665) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.InterpolantChecker.checkFinalInterpolants(InterpolantChecker.java:423) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:218) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:874) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-19 23:43:41,619 INFO L168 Benchmark]: Toolchain (without parser) took 1200.98 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 103.1 MB in the beginning and 140.0 MB in the end (delta: -36.9 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2020-07-19 23:43:41,622 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: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-19 23:43:41,624 INFO L168 Benchmark]: CACSL2BoogieTranslator took 231.24 ms. Allocated memory is still 137.9 MB. Free memory was 102.7 MB in the beginning and 92.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-19 23:43:41,626 INFO L168 Benchmark]: Boogie Preprocessor took 108.34 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 92.6 MB in the beginning and 181.5 MB in the end (delta: -88.8 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2020-07-19 23:43:41,628 INFO L168 Benchmark]: RCFGBuilder took 294.39 ms. Allocated memory is still 201.3 MB. Free memory was 181.5 MB in the beginning and 166.9 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-07-19 23:43:41,631 INFO L168 Benchmark]: TraceAbstraction took 561.18 ms. Allocated memory is still 201.3 MB. Free memory was 166.9 MB in the beginning and 140.0 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2020-07-19 23:43:41,642 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: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 231.24 ms. Allocated memory is still 137.9 MB. Free memory was 102.7 MB in the beginning and 92.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.34 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 92.6 MB in the beginning and 181.5 MB in the end (delta: -88.8 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 294.39 ms. Allocated memory is still 201.3 MB. Free memory was 181.5 MB in the beginning and 166.9 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 561.18 ms. Allocated memory is still 201.3 MB. Free memory was 166.9 MB in the beginning and 140.0 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Asserted terms must be closed de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Asserted terms must be closed: de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.assertTerm(SMTInterpol.java:665) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...