/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.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:29:10,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:29:10,933 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:29:10,976 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-19 00:29:11,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:29:11,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:29:11,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:29:11,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:29:11,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:29:11,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:29:11,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:29:11,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:29:11,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:29:11,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:29:11,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:29:11,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:29:11,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 00:29:11,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:29:11,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:29:11,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:29:11,050 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 00:29:11,092 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:29:11,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:29:11,094 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:29:11,094 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:29:11,094 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:29:11,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:29:11,095 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:29:11,095 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:29:11,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:29:11,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:29:11,097 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:29:11,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:29:11,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:29:11,098 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:29:11,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:29:11,098 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:29:11,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:29:11,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:29:11,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:29:11,099 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:29:11,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:29:11,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:29:11,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:29:11,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:29:11,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:29:11,100 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:29:11,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:29:11,100 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:29:11,100 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:29:11,100 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; [2020-08-19 00:29:11,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:29:11,443 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:29:11,446 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:29:11,448 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:29:11,449 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:29:11,449 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt3.c [2020-08-19 00:29:11,512 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/540a3c45c/f174653ec7e64291bf0a6d00407bfd1b/FLAG9dcfb5d71 [2020-08-19 00:29:11,964 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:29:11,964 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/sumt3.c [2020-08-19 00:29:11,972 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/540a3c45c/f174653ec7e64291bf0a6d00407bfd1b/FLAG9dcfb5d71 [2020-08-19 00:29:12,359 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/540a3c45c/f174653ec7e64291bf0a6d00407bfd1b [2020-08-19 00:29:12,370 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:29:12,372 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:29:12,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:29:12,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:29:12,377 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:29:12,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:29:12" (1/1) ... [2020-08-19 00:29:12,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47a8d835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:29:12, skipping insertion in model container [2020-08-19 00:29:12,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:29:12" (1/1) ... [2020-08-19 00:29:12,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:29:12,410 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:29:12,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:29:12,590 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:29:12,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:29:12,626 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:29:12,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:29:12 WrapperNode [2020-08-19 00:29:12,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:29:12,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:29:12,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:29:12,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:29:12,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:29:12" (1/1) ... [2020-08-19 00:29:12,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:29:12" (1/1) ... [2020-08-19 00:29:12,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:29:12" (1/1) ... [2020-08-19 00:29:12,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:29:12" (1/1) ... [2020-08-19 00:29:12,729 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:29:12" (1/1) ... [2020-08-19 00:29:12,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:29:12" (1/1) ... [2020-08-19 00:29:12,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:29:12" (1/1) ... [2020-08-19 00:29:12,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:29:12,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:29:12,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:29:12,738 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:29:12,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:29:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-19 00:29:12,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:29:12,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:29:12,802 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 00:29:12,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 00:29:12,803 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:29:12,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:29:12,803 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 00:29:12,803 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 00:29:12,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 00:29:12,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:29:12,804 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:29:12,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:29:12,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:29:13,017 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:29:13,018 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 00:29:13,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:29:13 BoogieIcfgContainer [2020-08-19 00:29:13,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:29:13,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:29:13,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:29:13,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:29:13,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:29:12" (1/3) ... [2020-08-19 00:29:13,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@256d3643 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:29:13, skipping insertion in model container [2020-08-19 00:29:13,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:29:12" (2/3) ... [2020-08-19 00:29:13,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@256d3643 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:29:13, skipping insertion in model container [2020-08-19 00:29:13,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:29:13" (3/3) ... [2020-08-19 00:29:13,032 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt3.c [2020-08-19 00:29:13,044 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:29:13,054 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:29:13,070 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:29:13,097 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:29:13,097 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:29:13,097 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:29:13,098 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:29:13,098 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:29:13,099 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:29:13,099 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:29:13,099 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:29:13,143 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-08-19 00:29:13,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-19 00:29:13,152 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:29:13,153 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:29:13,154 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:29:13,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:29:13,162 INFO L82 PathProgramCache]: Analyzing trace with hash -320041890, now seen corresponding path program 1 times [2020-08-19 00:29:13,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:29:13,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167404085] [2020-08-19 00:29:13,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:29:13,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:13,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:29:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:13,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:29:13,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167404085] [2020-08-19 00:29:13,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:29:13,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 00:29:13,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454402116] [2020-08-19 00:29:13,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 00:29:13,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:29:13,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 00:29:13,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:29:13,363 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2020-08-19 00:29:13,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:29:13,425 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2020-08-19 00:29:13,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 00:29:13,427 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-08-19 00:29:13,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:29:13,434 INFO L225 Difference]: With dead ends: 35 [2020-08-19 00:29:13,434 INFO L226 Difference]: Without dead ends: 16 [2020-08-19 00:29:13,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:29:13,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-08-19 00:29:13,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-08-19 00:29:13,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-08-19 00:29:13,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-08-19 00:29:13,477 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2020-08-19 00:29:13,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:29:13,478 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-08-19 00:29:13,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 00:29:13,479 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-08-19 00:29:13,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-19 00:29:13,479 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:29:13,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:29:13,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:29:13,480 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:29:13,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:29:13,481 INFO L82 PathProgramCache]: Analyzing trace with hash -334818226, now seen corresponding path program 1 times [2020-08-19 00:29:13,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:29:13,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416902007] [2020-08-19 00:29:13,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:29:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:13,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:29:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:13,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:29:13,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416902007] [2020-08-19 00:29:13,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:29:13,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 00:29:13,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690914383] [2020-08-19 00:29:13,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 00:29:13,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:29:13,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 00:29:13,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:29:13,830 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 7 states. [2020-08-19 00:29:14,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:29:14,009 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2020-08-19 00:29:14,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 00:29:14,010 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-08-19 00:29:14,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:29:14,013 INFO L225 Difference]: With dead ends: 24 [2020-08-19 00:29:14,013 INFO L226 Difference]: Without dead ends: 19 [2020-08-19 00:29:14,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:29:14,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-08-19 00:29:14,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2020-08-19 00:29:14,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-08-19 00:29:14,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-08-19 00:29:14,021 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2020-08-19 00:29:14,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:29:14,022 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-08-19 00:29:14,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 00:29:14,022 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-08-19 00:29:14,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-19 00:29:14,023 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:29:14,023 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:29:14,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:29:14,024 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:29:14,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:29:14,025 INFO L82 PathProgramCache]: Analyzing trace with hash -135124987, now seen corresponding path program 1 times [2020-08-19 00:29:14,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:29:14,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414596553] [2020-08-19 00:29:14,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:29:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:14,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:29:14,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:14,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:29:14,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414596553] [2020-08-19 00:29:14,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:29:14,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 00:29:14,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949972620] [2020-08-19 00:29:14,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 00:29:14,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:29:14,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 00:29:14,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-08-19 00:29:14,541 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 12 states. [2020-08-19 00:29:16,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:29:16,960 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2020-08-19 00:29:16,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 00:29:16,961 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-08-19 00:29:16,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:29:16,962 INFO L225 Difference]: With dead ends: 35 [2020-08-19 00:29:16,962 INFO L226 Difference]: Without dead ends: 23 [2020-08-19 00:29:16,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-08-19 00:29:16,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-08-19 00:29:16,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2020-08-19 00:29:16,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-08-19 00:29:16,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-08-19 00:29:16,970 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 15 [2020-08-19 00:29:16,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:29:16,970 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-08-19 00:29:16,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 00:29:16,971 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-08-19 00:29:16,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 00:29:16,971 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:29:16,972 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:29:16,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:29:16,972 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:29:16,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:29:16,973 INFO L82 PathProgramCache]: Analyzing trace with hash 396453102, now seen corresponding path program 2 times [2020-08-19 00:29:16,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:29:16,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893144414] [2020-08-19 00:29:16,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:29:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:17,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:29:17,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:17,297 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:29:17,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893144414] [2020-08-19 00:29:17,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:29:17,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-19 00:29:17,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617189846] [2020-08-19 00:29:17,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 00:29:17,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:29:17,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 00:29:17,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:29:17,300 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 7 states. [2020-08-19 00:29:21,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:29:21,702 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2020-08-19 00:29:21,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 00:29:21,703 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-08-19 00:29:21,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:29:21,704 INFO L225 Difference]: With dead ends: 42 [2020-08-19 00:29:21,704 INFO L226 Difference]: Without dead ends: 33 [2020-08-19 00:29:21,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-08-19 00:29:21,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-19 00:29:21,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 21. [2020-08-19 00:29:21,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-08-19 00:29:21,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-08-19 00:29:21,720 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 18 [2020-08-19 00:29:21,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:29:21,720 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-08-19 00:29:21,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 00:29:21,721 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-08-19 00:29:21,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 00:29:21,722 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:29:21,722 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:29:21,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:29:21,722 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:29:21,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:29:21,723 INFO L82 PathProgramCache]: Analyzing trace with hash -291244452, now seen corresponding path program 1 times [2020-08-19 00:29:21,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:29:21,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772193575] [2020-08-19 00:29:21,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:29:21,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:21,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:29:21,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:21,848 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:29:21,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772193575] [2020-08-19 00:29:21,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:29:21,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-19 00:29:21,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96235347] [2020-08-19 00:29:21,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 00:29:21,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:29:21,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 00:29:21,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:29:21,851 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 5 states. [2020-08-19 00:29:21,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:29:21,948 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2020-08-19 00:29:21,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 00:29:21,949 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-08-19 00:29:21,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:29:21,950 INFO L225 Difference]: With dead ends: 32 [2020-08-19 00:29:21,950 INFO L226 Difference]: Without dead ends: 23 [2020-08-19 00:29:21,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:29:21,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-08-19 00:29:21,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-08-19 00:29:21,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-08-19 00:29:21,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-08-19 00:29:21,962 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 19 [2020-08-19 00:29:21,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:29:21,963 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-08-19 00:29:21,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 00:29:21,963 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-08-19 00:29:21,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 00:29:21,964 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:29:21,964 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:29:21,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:29:21,965 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:29:21,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:29:21,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1483762910, now seen corresponding path program 1 times [2020-08-19 00:29:21,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:29:21,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507410960] [2020-08-19 00:29:21,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:29:22,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:22,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:29:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:22,690 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:29:22,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507410960] [2020-08-19 00:29:22,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:29:22,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 00:29:22,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606776446] [2020-08-19 00:29:22,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 00:29:22,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:29:22,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 00:29:22,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-19 00:29:22,693 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 14 states. [2020-08-19 00:29:27,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:29:27,282 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2020-08-19 00:29:27,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 00:29:27,283 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 19 [2020-08-19 00:29:27,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:29:27,284 INFO L225 Difference]: With dead ends: 31 [2020-08-19 00:29:27,284 INFO L226 Difference]: Without dead ends: 26 [2020-08-19 00:29:27,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2020-08-19 00:29:27,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-19 00:29:27,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-08-19 00:29:27,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-08-19 00:29:27,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-08-19 00:29:27,302 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 19 [2020-08-19 00:29:27,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:29:27,302 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-08-19 00:29:27,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 00:29:27,303 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-08-19 00:29:27,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-19 00:29:27,303 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:29:27,305 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:29:27,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 00:29:27,305 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:29:27,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:29:27,306 INFO L82 PathProgramCache]: Analyzing trace with hash 498025845, now seen corresponding path program 2 times [2020-08-19 00:29:27,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:29:27,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557142591] [2020-08-19 00:29:27,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:29:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:31,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:29:31,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:31,653 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:29:31,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557142591] [2020-08-19 00:29:31,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:29:31,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-19 00:29:31,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106303612] [2020-08-19 00:29:31,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 00:29:31,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:29:31,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 00:29:31,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=20, Unknown=1, NotChecked=0, Total=30 [2020-08-19 00:29:31,655 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 6 states. [2020-08-19 00:29:31,838 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 15 [2020-08-19 00:29:36,044 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 23 [2020-08-19 00:29:40,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:29:40,305 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-08-19 00:29:40,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 00:29:40,306 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-08-19 00:29:40,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:29:40,306 INFO L225 Difference]: With dead ends: 36 [2020-08-19 00:29:40,306 INFO L226 Difference]: Without dead ends: 27 [2020-08-19 00:29:40,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=27, Invalid=61, Unknown=2, NotChecked=0, Total=90 [2020-08-19 00:29:40,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-19 00:29:40,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-08-19 00:29:40,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-19 00:29:40,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-08-19 00:29:40,313 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 22 [2020-08-19 00:29:40,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:29:40,313 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-08-19 00:29:40,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 00:29:40,314 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-08-19 00:29:40,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-19 00:29:40,314 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:29:40,315 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:29:40,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 00:29:40,315 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:29:40,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:29:40,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1437456715, now seen corresponding path program 1 times [2020-08-19 00:29:40,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:29:40,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268861720] [2020-08-19 00:29:40,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:29:40,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:40,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:29:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:29:40,506 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-08-19 00:29:40,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268861720] [2020-08-19 00:29:40,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:29:40,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-19 00:29:40,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014648308] [2020-08-19 00:29:40,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:29:40,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:29:40,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:29:40,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:29:40,509 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 8 states. [2020-08-19 00:29:40,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:29:40,608 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-08-19 00:29:40,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 00:29:40,609 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-08-19 00:29:40,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:29:40,609 INFO L225 Difference]: With dead ends: 25 [2020-08-19 00:29:40,609 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 00:29:40,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-19 00:29:40,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 00:29:40,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 00:29:40,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 00:29:40,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 00:29:40,611 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-08-19 00:29:40,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:29:40,612 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 00:29:40,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:29:40,612 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 00:29:40,612 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 00:29:40,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 00:29:40,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 00:29:40,759 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-19 00:29:40,759 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~SIZE~0 |old(~SIZE~0)|) [2020-08-19 00:29:40,759 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 00:29:40,759 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 00:29:40,759 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2020-08-19 00:29:40,759 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 00:29:40,760 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 00:29:40,760 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-08-19 00:29:40,760 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-19 00:29:40,760 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-08-19 00:29:40,760 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-08-19 00:29:40,760 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 34) no Hoare annotation was computed. [2020-08-19 00:29:40,760 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-08-19 00:29:40,760 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 34) no Hoare annotation was computed. [2020-08-19 00:29:40,760 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-08-19 00:29:40,761 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 34) the Hoare annotation is: true [2020-08-19 00:29:40,761 INFO L268 CegarLoopResult]: For program point L26(lines 26 29) no Hoare annotation was computed. [2020-08-19 00:29:40,761 INFO L268 CegarLoopResult]: For program point L24(lines 24 29) no Hoare annotation was computed. [2020-08-19 00:29:40,761 INFO L268 CegarLoopResult]: For program point L26-2(lines 24 29) no Hoare annotation was computed. [2020-08-19 00:29:40,761 INFO L264 CegarLoopResult]: At program point L22-2(lines 22 31) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-08-19 00:29:40,761 INFO L264 CegarLoopResult]: At program point L22-3(lines 22 31) the Hoare annotation is: (or (let ((.cse2 (div (+ main_~i~0 main_~j~0 main_~k~0) 4294967296)) (.cse3 (div main_~l~0 4294967296))) (let ((.cse1 (* 4294967296 .cse3)) (.cse0 (+ main_~l~0 (* 4294967296 .cse2)))) (and (< .cse0 (+ main_~i~0 main_~j~0 main_~k~0 .cse1 1)) (< .cse2 (+ .cse3 1)) (<= (+ main_~i~0 main_~j~0 main_~k~0 .cse1) .cse0)))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-08-19 00:29:40,761 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-08-19 00:29:40,762 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-08-19 00:29:40,762 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-08-19 00:29:40,762 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-08-19 00:29:40,763 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-08-19 00:29:40,763 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-08-19 00:29:40,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 12:29:40 BoogieIcfgContainer [2020-08-19 00:29:40,782 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 00:29:40,784 INFO L168 Benchmark]: Toolchain (without parser) took 28412.06 ms. Allocated memory was 140.5 MB in the beginning and 244.8 MB in the end (delta: 104.3 MB). Free memory was 103.7 MB in the beginning and 154.3 MB in the end (delta: -50.5 MB). Peak memory consumption was 53.8 MB. Max. memory is 7.1 GB. [2020-08-19 00:29:40,785 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 00:29:40,785 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.93 ms. Allocated memory is still 140.5 MB. Free memory was 103.5 MB in the beginning and 93.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-08-19 00:29:40,786 INFO L168 Benchmark]: Boogie Preprocessor took 110.14 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 93.9 MB in the beginning and 181.1 MB in the end (delta: -87.3 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-08-19 00:29:40,787 INFO L168 Benchmark]: RCFGBuilder took 284.76 ms. Allocated memory is still 202.4 MB. Free memory was 181.1 MB in the beginning and 167.6 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-08-19 00:29:40,788 INFO L168 Benchmark]: TraceAbstraction took 27757.97 ms. Allocated memory was 202.4 MB in the beginning and 244.8 MB in the end (delta: 42.5 MB). Free memory was 166.9 MB in the beginning and 154.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 55.1 MB. Max. memory is 7.1 GB. [2020-08-19 00:29:40,792 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 253.93 ms. Allocated memory is still 140.5 MB. Free memory was 103.5 MB in the beginning and 93.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.14 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 93.9 MB in the beginning and 181.1 MB in the end (delta: -87.3 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 284.76 ms. Allocated memory is still 202.4 MB. Free memory was 181.1 MB in the beginning and 167.6 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27757.97 ms. Allocated memory was 202.4 MB in the beginning and 244.8 MB in the end (delta: 42.5 MB). Free memory was 166.9 MB in the beginning and 154.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 55.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((l <= i + j + k && i + j + k <= l) || !(SIZE <= 20000001)) || !(20000001 <= SIZE) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 27.5s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 20.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 94 SDtfs, 184 SDslu, 177 SDs, 0 SdLazy, 409 SolverSat, 72 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 14.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 10.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 22 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 15 PreInvPairs, 22 NumberOfFragments, 98 HoareAnnotationTreeSize, 15 FomulaSimplifications, 489 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 64 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 140 NumberOfCodeBlocks, 140 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 26609 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 21/41 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...