/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 DAGSIZE --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 [2020-07-20 04:01:49,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 04:01:49,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 04:01:49,192 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 04:01:49,193 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 04:01:49,194 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 04:01:49,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 04:01:49,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 04:01:49,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 04:01:49,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 04:01:49,201 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 04:01:49,202 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 04:01:49,202 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 04:01:49,203 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 04:01:49,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 04:01:49,206 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 04:01:49,206 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 04:01:49,207 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 04:01:49,209 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 04:01:49,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 04:01:49,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 04:01:49,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 04:01:49,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 04:01:49,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 04:01:49,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 04:01:49,241 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 04:01:49,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 04:01:49,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 04:01:49,247 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 04:01:49,273 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 04:01:49,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 04:01:49,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 04:01:49,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 04:01:49,275 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 04:01:49,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 04:01:49,276 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 04:01:49,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 04:01:49,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 04:01:49,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 04:01:49,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 04:01:49,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 04:01:49,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 04:01:49,279 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 04:01:49,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 04:01:49,279 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 04:01:49,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 04:01:49,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 04:01:49,280 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 04:01:49,280 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 04:01:49,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 04:01:49,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 04:01:49,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 04:01:49,281 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 04:01:49,281 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 04:01:49,281 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 04:01:49,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 04:01:49,282 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 04:01:49,282 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 04:01:49,282 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE 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 04:01:49,569 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 04:01:49,587 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 04:01:49,591 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 04:01:49,594 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 04:01:49,594 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 04:01:49,595 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/ddlm2013.i [2020-07-20 04:01:49,675 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c1f21ad5/aee41ae4f19942408f70edea1f96b93c/FLAG3094f4529 [2020-07-20 04:01:50,212 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 04:01:50,213 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/ddlm2013.i [2020-07-20 04:01:50,219 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c1f21ad5/aee41ae4f19942408f70edea1f96b93c/FLAG3094f4529 [2020-07-20 04:01:50,575 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c1f21ad5/aee41ae4f19942408f70edea1f96b93c [2020-07-20 04:01:50,586 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 04:01:50,590 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 04:01:50,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 04:01:50,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 04:01:50,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 04:01:50,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:01:50" (1/1) ... [2020-07-20 04:01:50,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26d85ba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:01:50, skipping insertion in model container [2020-07-20 04:01:50,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:01:50" (1/1) ... [2020-07-20 04:01:50,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 04:01:50,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 04:01:50,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 04:01:50,838 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 04:01:50,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 04:01:50,874 INFO L208 MainTranslator]: Completed translation [2020-07-20 04:01:50,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:01:50 WrapperNode [2020-07-20 04:01:50,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 04:01:50,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 04:01:50,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 04:01:50,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 04:01:50,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:01:50" (1/1) ... [2020-07-20 04:01:50,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:01:50" (1/1) ... [2020-07-20 04:01:50,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:01:50" (1/1) ... [2020-07-20 04:01:50,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:01:50" (1/1) ... [2020-07-20 04:01:50,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:01:50" (1/1) ... [2020-07-20 04:01:50,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:01:50" (1/1) ... [2020-07-20 04:01:50,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:01:50" (1/1) ... [2020-07-20 04:01:50,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 04:01:50,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 04:01:51,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 04:01:51,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 04:01:51,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:01:50" (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 04:01:51,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 04:01:51,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 04:01:51,073 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 04:01:51,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 04:01:51,074 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 04:01:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 04:01:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 04:01:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 04:01:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 04:01:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 04:01:51,075 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 04:01:51,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 04:01:51,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 04:01:51,292 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 04:01:51,293 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 04:01:51,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:01:51 BoogieIcfgContainer [2020-07-20 04:01:51,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 04:01:51,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 04:01:51,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 04:01:51,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 04:01:51,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 04:01:50" (1/3) ... [2020-07-20 04:01:51,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f1662f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:01:51, skipping insertion in model container [2020-07-20 04:01:51,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:01:50" (2/3) ... [2020-07-20 04:01:51,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f1662f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:01:51, skipping insertion in model container [2020-07-20 04:01:51,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:01:51" (3/3) ... [2020-07-20 04:01:51,306 INFO L109 eAbstractionObserver]: Analyzing ICFG ddlm2013.i [2020-07-20 04:01:51,318 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 04:01:51,326 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 04:01:51,339 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 04:01:51,364 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 04:01:51,365 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 04:01:51,365 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 04:01:51,365 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 04:01:51,365 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 04:01:51,365 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 04:01:51,366 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 04:01:51,366 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 04:01:51,387 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-07-20 04:01:51,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-20 04:01:51,393 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:51,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:51,395 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:51,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:51,402 INFO L82 PathProgramCache]: Analyzing trace with hash -917653371, now seen corresponding path program 1 times [2020-07-20 04:01:51,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:51,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57629039] [2020-07-20 04:01:51,414 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@82de5a2 [2020-07-20 04:01:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:51,550 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 04:01:51,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57629039] [2020-07-20 04:01:51,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:01:51,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 04:01:51,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13866752] [2020-07-20 04:01:51,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 04:01:51,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:51,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 04:01:51,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 04:01:51,576 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-07-20 04:01:51,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:51,598 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2020-07-20 04:01:51,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 04:01:51,600 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-20 04:01:51,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:51,609 INFO L225 Difference]: With dead ends: 35 [2020-07-20 04:01:51,610 INFO L226 Difference]: Without dead ends: 15 [2020-07-20 04:01:51,613 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 [2020-07-20 04:01:51,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-20 04:01:51,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-20 04:01:51,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-20 04:01:51,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-07-20 04:01:51,654 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 12 [2020-07-20 04:01:51,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:51,654 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-07-20 04:01:51,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 04:01:51,655 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-07-20 04:01:51,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 04:01:51,656 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:51,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:51,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 04:01:51,657 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:51,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:51,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1750778295, now seen corresponding path program 1 times [2020-07-20 04:01:51,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:51,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245069731] [2020-07-20 04:01:51,658 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@82de5a2 [2020-07-20 04:01:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:51,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:51,715 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 04:01:51,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245069731] [2020-07-20 04:01:51,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:01:51,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 04:01:51,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617886347] [2020-07-20 04:01:51,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 04:01:51,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:01:51,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 04:01:51,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 04:01:51,719 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2020-07-20 04:01:51,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:01:51,742 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2020-07-20 04:01:51,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 04:01:51,743 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-07-20 04:01:51,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:01:51,744 INFO L225 Difference]: With dead ends: 24 [2020-07-20 04:01:51,744 INFO L226 Difference]: Without dead ends: 15 [2020-07-20 04:01:51,745 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 04:01:51,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-20 04:01:51,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-20 04:01:51,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-20 04:01:51,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-07-20 04:01:51,750 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2020-07-20 04:01:51,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:01:51,751 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-07-20 04:01:51,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 04:01:51,751 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-07-20 04:01:51,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 04:01:51,752 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:01:51,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:01:51,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 04:01:51,753 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:01:51,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:01:51,753 INFO L82 PathProgramCache]: Analyzing trace with hash -941431669, now seen corresponding path program 1 times [2020-07-20 04:01:51,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:01:51,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321612115] [2020-07-20 04:01:51,754 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@82de5a2 [2020-07-20 04:01:51,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:01:51,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 04:01:51,811 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) [2020-07-20 04:01:51,818 INFO L168 Benchmark]: Toolchain (without parser) took 1228.85 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 103.3 MB in the beginning and 141.9 MB in the end (delta: -38.6 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-07-20 04:01:51,818 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory is still 121.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 04:01:51,819 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.53 ms. Allocated memory is still 138.9 MB. Free memory was 102.9 MB in the beginning and 93.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-07-20 04:01:51,821 INFO L168 Benchmark]: Boogie Preprocessor took 122.84 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 93.3 MB in the beginning and 182.3 MB in the end (delta: -89.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2020-07-20 04:01:51,822 INFO L168 Benchmark]: RCFGBuilder took 298.08 ms. Allocated memory is still 203.4 MB. Free memory was 182.3 MB in the beginning and 168.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-07-20 04:01:51,823 INFO L168 Benchmark]: TraceAbstraction took 516.53 ms. Allocated memory is still 203.4 MB. Free memory was 168.7 MB in the beginning and 141.9 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2020-07-20 04:01:51,827 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory is still 121.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 284.53 ms. Allocated memory is still 138.9 MB. Free memory was 102.9 MB in the beginning and 93.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.84 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 93.3 MB in the beginning and 182.3 MB in the end (delta: -89.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 298.08 ms. Allocated memory is still 203.4 MB. Free memory was 182.3 MB in the beginning and 168.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 516.53 ms. Allocated memory is still 203.4 MB. Free memory was 168.7 MB in the beginning and 141.9 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 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...