java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/llreve/nested-while_unsafe.c-1.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 01:14:53,382 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 01:14:53,383 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 01:14:53,395 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 01:14:53,395 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 01:14:53,396 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 01:14:53,401 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 01:14:53,403 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 01:14:53,405 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 01:14:53,407 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 01:14:53,408 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 01:14:53,408 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 01:14:53,409 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 01:14:53,410 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 01:14:53,413 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 01:14:53,414 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 01:14:53,416 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 01:14:53,427 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 01:14:53,429 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 01:14:53,430 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 01:14:53,431 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 01:14:53,433 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-06-22 01:14:53,442 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 01:14:53,443 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 01:14:53,443 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 01:14:53,446 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 01:14:53,447 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 01:14:53,448 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 01:14:53,448 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 01:14:53,466 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 01:14:53,466 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 01:14:53,467 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 01:14:53,467 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 01:14:53,468 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 01:14:53,468 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 01:14:53,468 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 01:14:53,469 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 01:14:53,469 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:14:53,469 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 01:14:53,469 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 01:14:53,469 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 01:14:53,470 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 01:14:53,472 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 01:14:53,472 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 01:14:53,473 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 01:14:53,473 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 01:14:53,474 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 01:14:53,475 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 01:14:53,522 INFO ]: Repository-Root is: /tmp [2018-06-22 01:14:53,540 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 01:14:53,548 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 01:14:53,550 INFO ]: Initializing SmtParser... [2018-06-22 01:14:53,550 INFO ]: SmtParser initialized [2018-06-22 01:14:53,551 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/llreve/nested-while_unsafe.c-1.smt2 [2018-06-22 01:14:53,552 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-22 01:14:53,648 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/nested-while_unsafe.c-1.smt2 unknown [2018-06-22 01:14:53,910 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/nested-while_unsafe.c-1.smt2 [2018-06-22 01:14:53,916 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 01:14:53,923 INFO ]: Walking toolchain with 4 elements. [2018-06-22 01:14:53,924 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 01:14:53,924 INFO ]: Initializing ChcToBoogie... [2018-06-22 01:14:53,924 INFO ]: ChcToBoogie initialized [2018-06-22 01:14:53,928 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:14:53" (1/1) ... [2018-06-22 01:14:53,989 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:14:53 Unit [2018-06-22 01:14:53,989 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 01:14:53,990 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 01:14:53,990 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 01:14:53,990 INFO ]: Boogie Preprocessor initialized [2018-06-22 01:14:54,012 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:14:53" (1/1) ... [2018-06-22 01:14:54,012 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:14:53" (1/1) ... [2018-06-22 01:14:54,020 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:14:53" (1/1) ... [2018-06-22 01:14:54,020 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:14:53" (1/1) ... [2018-06-22 01:14:54,025 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:14:53" (1/1) ... [2018-06-22 01:14:54,032 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:14:53" (1/1) ... [2018-06-22 01:14:54,034 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:14:53" (1/1) ... [2018-06-22 01:14:54,037 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 01:14:54,038 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 01:14:54,038 INFO ]: Initializing RCFGBuilder... [2018-06-22 01:14:54,038 INFO ]: RCFGBuilder initialized [2018-06-22 01:14:54,039 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:14:53" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-22 01:14:54,055 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 01:14:54,055 INFO ]: Found specification of procedure gotoProc [2018-06-22 01:14:54,055 INFO ]: Found implementation of procedure gotoProc [2018-06-22 01:14:54,055 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 01:14:54,055 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 01:14:54,055 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:14:54,430 INFO ]: Using library mode [2018-06-22 01:14:54,431 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:14:54 BoogieIcfgContainer [2018-06-22 01:14:54,431 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 01:14:54,432 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 01:14:54,432 INFO ]: Initializing TraceAbstraction... [2018-06-22 01:14:54,435 INFO ]: TraceAbstraction initialized [2018-06-22 01:14:54,436 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:14:53" (1/3) ... [2018-06-22 01:14:54,436 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a3d3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 01:14:54, skipping insertion in model container [2018-06-22 01:14:54,437 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:14:53" (2/3) ... [2018-06-22 01:14:54,437 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a3d3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:14:54, skipping insertion in model container [2018-06-22 01:14:54,437 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:14:54" (3/3) ... [2018-06-22 01:14:54,439 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 01:14:54,448 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 01:14:54,459 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 01:14:54,515 INFO ]: Using default assertion order modulation [2018-06-22 01:14:54,516 INFO ]: Interprodecural is true [2018-06-22 01:14:54,516 INFO ]: Hoare is false [2018-06-22 01:14:54,516 INFO ]: Compute interpolants for FPandBP [2018-06-22 01:14:54,516 INFO ]: Backedges is TWOTRACK [2018-06-22 01:14:54,516 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 01:14:54,516 INFO ]: Difference is false [2018-06-22 01:14:54,516 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 01:14:54,516 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 01:14:54,533 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 01:14:54,547 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 01:14:54,547 INFO ]: Found error trace [2018-06-22 01:14:54,548 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:14:54,548 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:14:54,554 INFO ]: Analyzing trace with hash 1929122820, now seen corresponding path program 1 times [2018-06-22 01:14:54,557 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:14:54,557 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:14:54,610 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:14:54,610 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:14:54,611 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:14:54,648 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:14:54,706 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:14:54,708 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:14:54,708 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 01:14:54,709 INFO ]: Interpolant automaton has 3 states [2018-06-22 01:14:54,720 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 01:14:54,720 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 01:14:54,722 INFO ]: Start difference. First operand 13 states. Second operand 3 states. [2018-06-22 01:14:54,766 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:14:54,767 INFO ]: Finished difference Result 11 states and 16 transitions. [2018-06-22 01:14:54,767 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 01:14:54,769 INFO ]: Start accepts. Automaton has 3 states. Word has length 8 [2018-06-22 01:14:54,769 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:14:54,777 INFO ]: With dead ends: 11 [2018-06-22 01:14:54,777 INFO ]: Without dead ends: 11 [2018-06-22 01:14:54,779 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 01:14:54,798 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 01:14:54,815 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 01:14:54,816 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 01:14:54,817 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2018-06-22 01:14:54,818 INFO ]: Start accepts. Automaton has 11 states and 16 transitions. Word has length 8 [2018-06-22 01:14:54,818 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:14:54,818 INFO ]: Abstraction has 11 states and 16 transitions. [2018-06-22 01:14:54,818 INFO ]: Interpolant automaton has 3 states. [2018-06-22 01:14:54,818 INFO ]: Start isEmpty. Operand 11 states and 16 transitions. [2018-06-22 01:14:54,819 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 01:14:54,819 INFO ]: Found error trace [2018-06-22 01:14:54,819 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:14:54,819 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:14:54,820 INFO ]: Analyzing trace with hash -445278714, now seen corresponding path program 1 times [2018-06-22 01:14:54,820 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:14:54,820 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:14:54,820 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:14:54,820 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:14:54,820 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:14:54,840 INFO ]: Conjunction of SSA is sat [2018-06-22 01:14:54,842 INFO ]: Counterexample might be feasible [2018-06-22 01:14:54,862 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:14:54 BoogieIcfgContainer [2018-06-22 01:14:54,862 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 01:14:54,863 INFO ]: Toolchain (without parser) took 947.01 ms. Allocated memory is still 309.3 MB. Free memory was 263.7 MB in the beginning and 231.8 MB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 3.6 GB. [2018-06-22 01:14:54,865 INFO ]: SmtParser took 0.10 ms. Allocated memory is still 309.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:14:54,869 INFO ]: ChcToBoogie took 65.63 ms. Allocated memory is still 309.3 MB. Free memory was 263.7 MB in the beginning and 261.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:14:54,870 INFO ]: Boogie Preprocessor took 47.27 ms. Allocated memory is still 309.3 MB. Free memory was 261.7 MB in the beginning and 259.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:14:54,870 INFO ]: RCFGBuilder took 393.10 ms. Allocated memory is still 309.3 MB. Free memory was 259.7 MB in the beginning and 247.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:14:54,871 INFO ]: TraceAbstraction took 430.10 ms. Allocated memory is still 309.3 MB. Free memory was 247.8 MB in the beginning and 231.8 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 3.6 GB. [2018-06-22 01:14:54,874 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.10 ms. Allocated memory is still 309.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 65.63 ms. Allocated memory is still 309.3 MB. Free memory was 263.7 MB in the beginning and 261.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 47.27 ms. Allocated memory is still 309.3 MB. Free memory was 261.7 MB in the beginning and 259.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 393.10 ms. Allocated memory is still 309.3 MB. Free memory was 259.7 MB in the beginning and 247.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 430.10 ms. Allocated memory is still 309.3 MB. Free memory was 247.8 MB in the beginning and 231.8 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [UNKNOWN] : assertion can be violated assertion can be violated We found a FailurePath: [L0] CALL call gotoProc(0, 0, 0, 0, 0, 0, 0); [L0] gotoSwitch := gotoSwitch_in; [L0] assume !(hbv_False_1_Int == hbv_False_2_Int); [L0] hhv_inv_main37_0_Int, hhv_inv_main37_1_Int, hhv_inv_main37_2_Int, hhv_inv_main37_3_Int := hbv_False_3_Int, hbv_False_4_Int, hbv_False_1_Int, hbv_False_2_Int; [L0] havoc hbv_False_3_Int, hbv_False_4_Int, hbv_False_1_Int, hbv_False_2_Int; [L0] assume !(!(hbv_inv_main37_4_Int == 0) && 0 <= hbv_inv_main37_2_Int + -1 * hbv_inv_main37_1_Int + -1) && !(!(hbv_inv_main37_3_Int == 0) && 0 <= hbv_inv_main37_1_Int + -1 * hbv_inv_main37_2_Int + -1); [L0] hhv_inv_main32_0_Int, hhv_inv_main32_1_Int, hhv_inv_main32_2_Int, hhv_inv_main32_3_Int, hhv_inv_main32_4_Int, hhv_inv_main32_5_Int := hhv_inv_main37_0_Int, hhv_inv_main37_1_Int, hhv_inv_main37_2_Int, hbv_inv_main37_1_Int, hhv_inv_main37_3_Int, hbv_inv_main37_2_Int; [L0] havoc hbv_inv_main37_3_Int, hbv_inv_main37_2_Int, hbv_inv_main37_4_Int, hbv_inv_main37_1_Int; [L0] assume (((((hhv_inv_main32_3_Int == hhv_inv_main32_0_Int && 0 <= hhv_inv_main32_0_Int + -1) && !(!(hbv_inv_main32_2_Int == 0) && 0 <= hhv_inv_main32_0_Int + -1)) && hhv_inv_main32_2_Int == hhv_inv_main32_1_Int) && hhv_inv_main32_4_Int == hhv_inv_main32_1_Int + -2) && !(hbv_inv_main32_1_Int == 0)) && hhv_inv_main32_5_Int == 1; [L0] hhv_inv_main3_0_Int, hhv_inv_main3_1_Int := hhv_inv_main32_0_Int, hhv_inv_main32_1_Int; [L0] havoc hbv_inv_main32_2_Int, hbv_inv_main32_1_Int; [L0] assume true; [L0] RET call gotoProc(0, 0, 0, 0, 0, 0, 0); [L0] assert false; - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 13 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14 SDtfs, 11 SDslu, 4 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 70 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/nested-while_unsafe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_01-14-54-886.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/nested-while_unsafe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_01-14-54-886.csv Received shutdown request...