/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/n.c11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-8fc6572 [2020-07-10 15:27:27,358 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-10 15:27:27,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-10 15:27:27,378 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-10 15:27:27,379 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-10 15:27:27,380 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-10 15:27:27,382 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-10 15:27:27,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-10 15:27:27,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-10 15:27:27,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-10 15:27:27,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-10 15:27:27,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-10 15:27:27,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-10 15:27:27,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-10 15:27:27,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-10 15:27:27,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-10 15:27:27,405 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-10 15:27:27,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-10 15:27:27,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-10 15:27:27,412 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-10 15:27:27,415 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-10 15:27:27,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-10 15:27:27,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-10 15:27:27,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-10 15:27:27,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-10 15:27:27,433 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-10 15:27:27,434 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-10 15:27:27,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-10 15:27:27,438 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 [2020-07-10 15:27:27,468 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-10 15:27:27,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-10 15:27:27,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-10 15:27:27,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-10 15:27:27,472 INFO L138 SettingsManager]: * Use SBE=true [2020-07-10 15:27:27,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-10 15:27:27,473 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-10 15:27:27,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-10 15:27:27,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-10 15:27:27,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-10 15:27:27,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-10 15:27:27,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-10 15:27:27,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-10 15:27:27,475 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-10 15:27:27,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-10 15:27:27,476 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-10 15:27:27,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-10 15:27:27,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-10 15:27:27,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-10 15:27:27,476 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-10 15:27:27,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-10 15:27:27,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-10 15:27:27,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-10 15:27:27,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-10 15:27:27,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-10 15:27:27,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-10 15:27:27,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-10 15:27:27,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-10 15:27:27,478 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-10 15:27:27,478 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-10 15:27:27,766 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-10 15:27:27,784 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-10 15:27:27,786 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-10 15:27:27,787 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-10 15:27:27,788 INFO L275 PluginConnector]: CDTParser initialized [2020-07-10 15:27:27,788 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/n.c11.c [2020-07-10 15:27:27,861 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edfa839e8/940c2fce8ac649daa7a386fa440ea8aa/FLAG2b81b65e4 [2020-07-10 15:27:28,311 INFO L306 CDTParser]: Found 1 translation units. [2020-07-10 15:27:28,312 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/n.c11.c [2020-07-10 15:27:28,318 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edfa839e8/940c2fce8ac649daa7a386fa440ea8aa/FLAG2b81b65e4 [2020-07-10 15:27:28,689 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edfa839e8/940c2fce8ac649daa7a386fa440ea8aa [2020-07-10 15:27:28,696 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-10 15:27:28,698 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-10 15:27:28,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-10 15:27:28,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-10 15:27:28,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-10 15:27:28,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 03:27:28" (1/1) ... [2020-07-10 15:27:28,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53c212b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:27:28, skipping insertion in model container [2020-07-10 15:27:28,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 03:27:28" (1/1) ... [2020-07-10 15:27:28,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-10 15:27:28,733 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-10 15:27:28,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 15:27:28,946 INFO L203 MainTranslator]: Completed pre-run [2020-07-10 15:27:28,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 15:27:28,977 INFO L208 MainTranslator]: Completed translation [2020-07-10 15:27:28,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:27:28 WrapperNode [2020-07-10 15:27:28,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-10 15:27:28,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-10 15:27:28,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-10 15:27:28,979 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-10 15:27:28,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:27:28" (1/1) ... [2020-07-10 15:27:28,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:27:28" (1/1) ... [2020-07-10 15:27:29,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:27:28" (1/1) ... [2020-07-10 15:27:29,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:27:28" (1/1) ... [2020-07-10 15:27:29,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:27:28" (1/1) ... [2020-07-10 15:27:29,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:27:28" (1/1) ... [2020-07-10 15:27:29,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:27:28" (1/1) ... [2020-07-10 15:27:29,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-10 15:27:29,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-10 15:27:29,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-10 15:27:29,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-10 15:27:29,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:27:28" (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 [2020-07-10 15:27:29,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-10 15:27:29,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-10 15:27:29,149 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-10 15:27:29,149 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-10 15:27:29,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-10 15:27:29,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-10 15:27:29,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-10 15:27:29,150 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-10 15:27:29,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-10 15:27:29,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-10 15:27:29,372 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-10 15:27:29,372 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-10 15:27:29,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 03:27:29 BoogieIcfgContainer [2020-07-10 15:27:29,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-10 15:27:29,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-10 15:27:29,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-10 15:27:29,380 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-10 15:27:29,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.07 03:27:28" (1/3) ... [2020-07-10 15:27:29,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2318fe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 03:27:29, skipping insertion in model container [2020-07-10 15:27:29,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:27:28" (2/3) ... [2020-07-10 15:27:29,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2318fe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 03:27:29, skipping insertion in model container [2020-07-10 15:27:29,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 03:27:29" (3/3) ... [2020-07-10 15:27:29,383 INFO L109 eAbstractionObserver]: Analyzing ICFG n.c11.c [2020-07-10 15:27:29,398 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-10 15:27:29,408 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-10 15:27:29,424 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-10 15:27:29,450 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-10 15:27:29,450 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-10 15:27:29,451 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-10 15:27:29,451 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-10 15:27:29,451 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-10 15:27:29,451 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-10 15:27:29,451 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-10 15:27:29,452 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-10 15:27:29,479 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-10 15:27:29,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-10 15:27:29,486 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 15:27:29,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 15:27:29,499 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 15:27:29,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 15:27:29,506 INFO L82 PathProgramCache]: Analyzing trace with hash -147882559, now seen corresponding path program 1 times [2020-07-10 15:27:29,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-10 15:27:29,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819025742] [2020-07-10 15:27:29,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 15:27:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:27:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:27:29,638 INFO L280 TraceCheckUtils]: 0: Hoare triple {23#true} assume true; {23#true} is VALID [2020-07-10 15:27:29,639 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {23#true} {23#true} #39#return; {23#true} is VALID [2020-07-10 15:27:29,641 INFO L263 TraceCheckUtils]: 0: Hoare triple {23#true} call ULTIMATE.init(); {23#true} is VALID [2020-07-10 15:27:29,642 INFO L280 TraceCheckUtils]: 1: Hoare triple {23#true} assume true; {23#true} is VALID [2020-07-10 15:27:29,642 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {23#true} {23#true} #39#return; {23#true} is VALID [2020-07-10 15:27:29,644 INFO L263 TraceCheckUtils]: 3: Hoare triple {23#true} call #t~ret2 := main(); {23#true} is VALID [2020-07-10 15:27:29,644 INFO L280 TraceCheckUtils]: 4: Hoare triple {23#true} havoc ~a~0;~len~0 := 0;havoc ~i~0; {23#true} is VALID [2020-07-10 15:27:29,646 INFO L280 TraceCheckUtils]: 5: Hoare triple {23#true} assume !true; {24#false} is VALID [2020-07-10 15:27:29,647 INFO L263 TraceCheckUtils]: 6: Hoare triple {24#false} call __VERIFIER_assert((if ~len~0 % 4294967296 >= 0 && ~len~0 % 4294967296 < 5 then 1 else 0)); {24#false} is VALID [2020-07-10 15:27:29,647 INFO L280 TraceCheckUtils]: 7: Hoare triple {24#false} ~cond := #in~cond; {24#false} is VALID [2020-07-10 15:27:29,647 INFO L280 TraceCheckUtils]: 8: Hoare triple {24#false} assume 0 == ~cond; {24#false} is VALID [2020-07-10 15:27:29,648 INFO L280 TraceCheckUtils]: 9: Hoare triple {24#false} assume !false; {24#false} is VALID [2020-07-10 15:27:29,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-10 15:27:29,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819025742] [2020-07-10 15:27:29,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 15:27:29,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-10 15:27:29,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601782820] [2020-07-10 15:27:29,659 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-10 15:27:29,661 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 15:27:29,664 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-10 15:27:29,691 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:27:29,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-10 15:27:29,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-10 15:27:29,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-10 15:27:29,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-10 15:27:29,704 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-07-10 15:27:29,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:27:29,761 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-07-10 15:27:29,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-10 15:27:29,762 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-10 15:27:29,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 15:27:29,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-10 15:27:29,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 36 transitions. [2020-07-10 15:27:29,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-10 15:27:29,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 36 transitions. [2020-07-10 15:27:29,777 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 36 transitions. [2020-07-10 15:27:29,862 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 36 edges. 36 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:27:29,872 INFO L225 Difference]: With dead ends: 32 [2020-07-10 15:27:29,872 INFO L226 Difference]: Without dead ends: 13 [2020-07-10 15:27:29,876 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 [2020-07-10 15:27:29,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-07-10 15:27:29,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-07-10 15:27:29,912 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 15:27:29,913 INFO L82 GeneralOperation]: Start isEquivalent. First operand 13 states. Second operand 13 states. [2020-07-10 15:27:29,914 INFO L74 IsIncluded]: Start isIncluded. First operand 13 states. Second operand 13 states. [2020-07-10 15:27:29,914 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 13 states. [2020-07-10 15:27:29,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:27:29,918 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2020-07-10 15:27:29,918 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-07-10 15:27:29,919 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:27:29,919 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:27:29,919 INFO L74 IsIncluded]: Start isIncluded. First operand 13 states. Second operand 13 states. [2020-07-10 15:27:29,920 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 13 states. [2020-07-10 15:27:29,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:27:29,923 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2020-07-10 15:27:29,923 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-07-10 15:27:29,923 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:27:29,924 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:27:29,924 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 15:27:29,924 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 15:27:29,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-07-10 15:27:29,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-07-10 15:27:29,928 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2020-07-10 15:27:29,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 15:27:29,929 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-07-10 15:27:29,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-10 15:27:29,929 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-07-10 15:27:29,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-10 15:27:29,930 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 15:27:29,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 15:27:29,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-10 15:27:29,931 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 15:27:29,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 15:27:29,932 INFO L82 PathProgramCache]: Analyzing trace with hash -158041290, now seen corresponding path program 1 times [2020-07-10 15:27:29,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-10 15:27:29,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921964877] [2020-07-10 15:27:29,933 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 15:27:29,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:27:29,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-10 15:27:29,976 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.smtinterpol.proof.FixResolutionProof.fix(FixResolutionProof.java:191) at de.uni_freiburg.informatik.ultimate.smtinterpol.proof.ProofTermGenerator.convert(ProofTermGenerator.java:150) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getProof(SMTInterpol.java:797) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:391) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:385) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:332) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:332) 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:337) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:239) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:108) 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$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-10 15:27:29,982 INFO L168 Benchmark]: Toolchain (without parser) took 1282.70 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 103.5 MB in the beginning and 129.7 MB in the end (delta: -26.2 MB). Peak memory consumption was 30.9 MB. Max. memory is 7.1 GB. [2020-07-10 15:27:29,984 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 146.8 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-10 15:27:29,985 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.19 ms. Allocated memory is still 146.8 MB. Free memory was 103.2 MB in the beginning and 93.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-07-10 15:27:29,987 INFO L168 Benchmark]: Boogie Preprocessor took 113.30 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 93.6 MB in the beginning and 182.2 MB in the end (delta: -88.6 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-10 15:27:29,988 INFO L168 Benchmark]: RCFGBuilder took 282.91 ms. Allocated memory is still 203.9 MB. Free memory was 182.2 MB in the beginning and 167.8 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-07-10 15:27:29,989 INFO L168 Benchmark]: TraceAbstraction took 601.85 ms. Allocated memory is still 203.9 MB. Free memory was 167.1 MB in the beginning and 129.7 MB in the end (delta: 37.5 MB). Peak memory consumption was 37.5 MB. Max. memory is 7.1 GB. [2020-07-10 15:27:29,993 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 146.8 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 279.19 ms. Allocated memory is still 146.8 MB. Free memory was 103.2 MB in the beginning and 93.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.30 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 93.6 MB in the beginning and 182.2 MB in the end (delta: -88.6 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 282.91 ms. Allocated memory is still 203.9 MB. Free memory was 182.2 MB in the beginning and 167.8 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 601.85 ms. Allocated memory is still 203.9 MB. Free memory was 167.1 MB in the beginning and 129.7 MB in the end (delta: 37.5 MB). Peak memory consumption was 37.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.proof.FixResolutionProof.fix(FixResolutionProof.java:191) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...